HT812 V2

HT814 V2

HT818 V2

Interfaces

Telephone Interfaces

Two (2) RJ11 FXS ports for HT812 V2.

Four (4) RJ11 FXS sports for HT814 V2.

Eight (8) RJ11 FXS ports for HT818 V2.

Network Interface

Two (2) 10/100/1000 Mbps Ethernet port (RJ45).

LED Indicators

POWER, LAN, WAN, PHONE1, PHONE2 for HT812 V2.

POWER, LAN, WAN, PHONE1, PHONE2, PHONE3, PHONE4 for HT814 V2.

POWER, NET1, NET2, PHONE1, PHONE2, PHONE3, PHONE4, PHONE 5, PHONE 6, PHONE 7 and PHONE 8 for HT818 V2.

Factory Reset Button

Yes.

Voice, Fax, Modem

Telephony Features

Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference.

Voice Codecs

G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.722, G.723.1, G.729A/B, G.726-32, iLBC, OPUS, dynamic jitter buffer, advanced line echo cancellation

Fax over IP

T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through.

Short/Long Haul Ring Load

For HT812 V2: 3 REN, up to 1km on 24AWG line.

For HT814 V2 and HT818 V2: 2 REN, up to 1km on 24AWG line.

Caller ID

Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID.

Dial Methods

DTMF, Pulse

Disconnect Methods

Busy Tone, Polarity Reversal/Wink, Loop Current.

Signaling

Network Protocols

TCP/IP/UDP, RTP/RTCP (RFC1889, 1890), HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, Telnet, STUN (RFC3489, 5389), SIP (RFC3261), SIP over TCP/TLS, SRTP, SNMP, TR-069, IMS/3GPP, IPoE

QoS

Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS), Traffic Shaping 

DTMF Methods

In-audio, RFC2833 and/or SIP INFO.

Provisioning and Control

HTTP, HTTPS, FTP, FTPS, SSH, TFTP, TR-069, secure and automated provisioning using TR069, syslog.

Security

Media

SRTP.

Control

TLS/SIPS/HTTPS.

Management

Syslog support, SSH, remote management using web browser.

Physical

Universal Power Supply

Input: 100-240VAC, 50-60Hz

Output: 12V/0.5A for HT812 V2.

Output: 12V/1A for HT814 V2.

Output: 12V/1.5A for HT818 V2.

Environmental

Operational: 32° – 104 °F or 0º – 40ºC.

Humidity: 10 – 90% Non-condensing.

Dimensions and Weight

Dimension : 36 x 120 x 180 mm (H x W x D)

Weight: 353.33g for HT812 V2, 423.5g for HT814 V2 and 356g for HT818 V2.

Compliance

Compliance

FCC/CE/RCM.

Port

Description

Power socket. Used to power HT814 V2 (12V)

NET1 port. Can be configured as LAN or WAN port on the HT814 V2. By default, it is considered a WAN port.

NET2 port. Can be configured as LAN or WAN port on the HT814 V2. By default, it is considered a LAN port.

FXS ports to connect analog phones / fax machines to HT814 V2 using RJ11 telephone cable.

Factory reset button. Press for 7 seconds to reset to factory default settings.

LED Lights

 Status

Power LED

The Power LED lights up when The HT812 V2 is powered on and it flashes when the HT812 V2 is booting up

NET1 LED

The NET1 LED lights up when The HT812 V2 is connected to your network through the NET1 port.

NET2 LED

The NET2 LED lights up when The HT812 V2 is connected to your network through the NET2 port.

The phone LEDs indicate status of the respective FXS port-phone on the back panel

LED Lights

 Status

Power LED

The Power LED lights up when The HT814 V2 is powered on and it flashes when the HT814 V2 is booting up

NET1 LED

The NET1 LED lights up when The HT814 V2 is connected to your network through the NET1 port.

NET2 LED

The NET2 LED lights up when The HT814 V2 is connected to your network through the NET2 port.

Phone LED 1-4

The phone LEDs indicate status of the respective FXS port-phone on the back panel

LED Lights

 Status

Power LED

The Power LED lights up when The HT818 V2 is powered on and it flashes when the HT818 V2 is booting up

NET1 LED

The NET1 LED lights up when The HT818 V2 is connected to your network through the NET1 port.

NET2 LED

The NET2 LED lights up when The HT818 V2 is connected to your network through the NET2 port.

Phone LED 1- 8

The phone LEDs indicate status of the respective FXS port-phone on the back panel

Menu

Voice Prompt

Options

Main Menu

“Enter a Menu Option”

Press “*” for the next menu option

Press “#” to return to the main menu

Enter 01-05, 07,10, 12-17, 20, 47 or 99 menu options

01

“DHCP Mode”,

“Static IP Mode”

“PPPoE Mode“

Press “9” to toggle the selection

If using “Static IP Mode”, configure the IP address information using menus 02 to 05.

If using “Dynamic IP Mode”, all IP address information comes from the DHCP server automatically after reboot.

If using “PPPoE Mode”, configure PPPoE Username and Password from web GUI to get IP from your ISP.

02

“IP Address “ + IP address

03

“Subnet “ + IP address

Same as menu 02

04

“Gateway “ + IP address

Same as menu 02

05

“DNS Server “ + IP address

Same as menu 02

07

Preferred Vocoder

Press “9” to move to the next selection in the list:

PCM U / PCM A

iLBC

G-726

G-723

G-729

OPUS

G722

10

“MAC Address”

Announces the MAC address of the unit.

Note: The device has two MAC addresses. One for the WAN port and one for the LAN port. The device MAC address announced is the address of LAN port.

13

Firmware Server IP Address

Announces current Firmware Server IP address. Enter 12-digit new IP address.

14

Configuration Server IP Address

Announces current Config Server Path IP address. Enter 12-digit new IP address.

15

Upgrade Protocol

Upgrade protocol for firmware and configuration update. Press “9” to toggle between TFTP/HTTP/HTTP /FTP/FTPS

16

Firmware Version

Announces Firmware version information.

17

Firmware Upgrade

Firmware upgrade mode. Press “9” to toggle among the following three options:

Always check

Check when pre/suffix changes

Never upgrade

20

Certificate Type

Annouces certificate information.

47

“Direct IP Calling”

Enter the target IP address to make a direct IP call, after dial tone.

86

Voice Mail

Access to your voice mails messages.

99

“RESET”

Press “9” to reboot the device

Enter MAC address to restore factory default setting

(See Restore Factory Default Setting section)

“Invalid Entry”

Automatically returns to main menu

“Device not registered”

This prompt will be played immediately after off hook If the device is not registered and the option “Outgoing Call without Registration” is in NO

User Level

User

Password

Web Pages Allowed

End User Level

user

123

View all pages but can only modify basic settings

Administrator Level

admin

random password located at the back of the unit

Browse all pages and modify all settings

Viewer Level

viewer

viewer

View all pages but no changes allowed.

Product Model

Displays the Product model: HT812V2, HT814V2 or HT818V2.

Serial Number

Displays the device’s serial number

Hardware Version

Hardware Version

Displays the hardware version

Part Number

Displays the part number.

Software Version

Software Version

Vendor Default Config Version

Project

Displays the unique project ID of the custom configuration file.

Vendor Default Config Version

Displays the version of the custom configuration file.

Operation State

Software Status

Displays whether the software is running correctly on the device

Mem

Displays the memory usage.

System Up Time

Displays the duration of the system up time.

System Current Time

Displays the HT8xx current time

CPU Load

Displays the processor load

Provision

Displays the last status of provisioning

System Info

Downloads a diagnostic system information file from the device, containing technical details such as firmware version, uptime, system status, and other runtime information useful for troubleshooting.
Note: The device periodically saves the current system time to an internal time file. This file may be included in the System Info download package to assist with troubleshooting time-related issues.

Core Dump

Core Dump

Displays the core dump file when available and which could be downloaded for troubleshooting purpose.

MAC Address

Displays the device’s MAC address, this will include the WAN and LAN mac addresses, for the NET1 and NET2 ports.

IPv4 Address

Displays the assigned IPv4 address

IPv6 Address

Displays the assigned IPv6 address

VPN IPv4 Address

Displays the connected VPN IPv4 address, if available.

VPN IPv6 Address

Displays the connected VPN IPv4 address, if available.

Network Cable Status

Displays the status of the NET1 and NET2 ports, it is shown as UP if connected, and DOWN if disconnected

PPPoE Link Up

Indicates active connectivity between the gateway and the network provider through PPPoE 

NAT

Displays the type of NAT used

Certificate Type

Displays the certificate type

Port Status

Port 

Displays the type of analog port : FXS1, FXS2, FXS3….FXS8

Hook

Shows the status of the port, On Hook, Off Hook, Not connected…

User ID

Displays the SIP user ID registred on the port.

Registration

Displays wether the port is registered or not.

Sip Port

Displays the SIP Destination port used by the analog interface.

Port Options

Port

Displays the FXS ports.

DND

Displays whether the connected analog phone is on DND mode or not.

Indicates the forwarding number.

Busy Forward

Indicates the busy forwarding number.

Delayed Forward

Indicates the delayed forwarding number.

CID

Indicates the Caller ID.

Call Waiting

Indicates if Call waiting is enabled.

SRTP

Indicates if Secured RTP is enabled.

Enable Voice Prompt

The voice prompt is disabled if set to Yes.
Default value is “Yes”.

Enable Direct IP Call

The direct IP calling is disabled if set to No.

Default value is “Yes”.

Blocklist For Incoming Calls

Blocks calls from specific numbers. Use “,” to separate numbers.

Lock Keypad Update

The configuration update via keypad is disabled if set to Yes. Default value is “No”

Play Busy Tone When Account is unregistered

If set to Yes, busy tone will be played when user goes offhook from an unregistered account.
Default value is “No”.

Hunting Group Registration Mode

The Hunting Group Registration Mode determines how SIP registration works for a group of FXS ports.

DHCP Option 17 Enterprise Number

Fill in the DHCP Option 17 enterprise number. Range: 0-65535. Default is 3561.

ATA Setting

STUN Server

The IP address or domain name of the STUN server. Only non-symmetric NAT routers work with STUN.

Keep-Alive Interval

Specifies how often the device sends a blank UDP packet to the SIP server in order to keep the “ping hole” on the NAT router to open. Default is 20 seconds. Range is 10-160 seconds.

Use STUN to detect network connectivity

Use STUN keep-alive to detect WAN side network problems.
Disabled by default

System Ring Cadence

Cadence on+off value range (0, 16000) milliseconds

Prompt Tone Access Code

The key pattern to get Prompt Tone. Maximum 20 digits. No default value provided

CPT Settings:

Using these settings, users can configure tone frequencies and cadence according to their preferences. By default, they are set to North American frequencies.
Configure these settings with known values to avoid uncomfortable high-pitch sounds. ON is the period of ringing (“On time” in ‘ms’) while OFF is the period of silence. To set a continuous tone, OFF should be zero. Otherwise, it will ring ON ms and a pause of OFF ms and then repeat the pattern.

Example configuration for N.A.
Dial tone:
f1=350@-17,f2=440@-17,c=0/0;

Syntax: Syntax: f1=val[,f2=val[,c=on1/off1[-on2/off2[-on3/off3]]]]
(Frequencies are in (10, 4000) Hz and cadence on and off are in (0, 64000) ms)

Security Settings → Web/SSH Access

Basic Settings

Web Access Mode

Selects the web page access protocol. The available options are: HTTP, HTTPS, Disabled.

The default settings is “HTTPS”.

HTTP Web Port

Defines the HTTP Web Port. 

The default setting is “80”. The valid range is 1-65533.

HTTPS Web Port

Defines the HTTPS Web Port. 
The default setting is “443”. The valid range is 1-65533.

Web Session Timeout

Defines the web session timeout in minutes.
The default setting is “10”, the valid range is 1-60.

Web Access Attempt Limit

Defines the number of failed web login attempts allowed before web access is locked.

The default setting is “5”, the valid range is 1-10.

Web Lockout Duration

Defines the duration for which web access is locked in minutes.
The default setting is “15”, the valid range is 1-60.

Enable User Level Web Access

Enables or disables user-level web access.
Disabled by default.

Enable Viewer Level Web Access

Enables or disables viewer-level web access.
Disabled by default.

SSH

Enable SSH

Enables or disables SSH access to the phone.
Enabled by default.

SSH Port

Defines the SSH port. This port cannot be the same as the Telnet Port.
The default setting is “22”. The valid range is  1-65533. 

SSH Idle Timeout

Configures SSH session Timeout in seconds. 
The default setting is “0”. The valid range is 0-86400. 

Enable Telnet

Enables or disables Telnet access.

Disabled by default.

Telnet Port

Defines the Telnet port. This port cannot be the same as the SSH Port.
The default setting is “23”. The valid range is  1-65533. 

Telnet Idle Timeout

Configures Telnet session Timeout in seconds.
The default setting is “0”. The valid range is 0-86400. 

Security Controls for SSH/Telent Access

Specifies security measures and controls that apply to the SSH/Telnet protocol to ensure secure and authorized access to the device, the following options are supported

The default setting is “Allow any user to set any PValue”

Enable Web/SSH Access

Enables or Disables the Web and SSH access through the WAN port. The available options are the following:

The default setting is “Yes”.

Access Control

Allow List for WAN Side

If Enable Web/SSH Access is set to Yes or Auto. Users can configure the white List for WAN Side to be used for remote management.

Multiple IPs are supported and need to be separated by space.

Example:192.168.5.222 192.168.5.223 192.168.7.0/24

Note: If both blocklist and allowlist are not empty, the blocklist is processed first, followed by the allow list.

Block List for WAN Side

If Enable Web/SSH Access is set to Yes or Auto. Users can configure the black List for WAN Side to ban WAN side web access.

Multiple IPs are supported and need to be separated by space.

Example: 192.168.5.222 192.168.5.223 192.168.7.0/24

Note: If both blocklist and allowlist are not empty, the blocklist is processed first, followed by the allow list.

Security Settings → User Info Management

Password Rules

Enable strict password rules

Enable or disables strict password rules.

Minimum password length

Defines the Minimum password length, Range: 4-30, default is 8.

Required number of character classes

Sets the minimum number of character classes that a password should contain, composed of allowed combinations of different character classes; Range: 0-4, default is 3.

Allowed Character classes

Defines the Allowed Character classes, which are: Lower case, Upper case, Numbers, Special characters.

Password

New Admin Password

Defines the new admin password, Must contain 4-30 characters, When strict password rules are enabled, the password needs to comply with the settings in the password rules; Do not display password for security reasons.

Confirm Admin Password

Confirms the entered admin password.

New User Password

Defines the new user password, Must contain 4-30 characters, When strict password rules are enabled, the password needs to comply with the settings in the password rules; Do not display password for security reasons.

Confirm User Password

Confirms the entered user password.

New Viewer Password

Defines the new viewer password, Must contain 4-30 characters, When strict password rules are enabled, the password needs to comply with the settings in the password rules; Do not display password for security reasons.

Confirm Viewer Password

Confirms the entered viewer password.

Security Settings →  Client Certificate

SIP TLS

Enable/Disable Weak Cipher Suites

Controls whether the device allows the use of weakened or deprecated TLS cipher suites. You can either allow weak TLS ciphers or selectively disable specific weak encryption, authentication, or key-exchange algorithm. Disabling weak cipher suites is recommended to improve security and comply with modern TLS standards.
The available option are : 

By default, it is set to “Disable All Of The Above Weak TLS Ciphers Suites”

SIP TLS Certificate

Specifies SSL certificate used for SIP over TLS is in X.509 format. The HT8xx has built-in private key and SSL certificate. The maximum supported length is 8192.

SIP TLS Private Key

Specifies TLS private key used for SIP over TLS is in X.509 format. The maximum supported length is 4069.

SIP TLS Private Key Password

Specifies SSL Private key password used for SIP Transport in TLS/TCP.

TLS Version

Minimum TLS Version

This feature allows customer to choose desired Minimum TLS Version.
The available options are:

The default setting is “TLS 1.2”.

Maximum TLS Version

This feature allows customer to choose desired Maximum TLS Version.
The available options are:

The default setting is “Unlimited”.

Custom Certificate

Custom Certificate

Allows users to update to the device their own certificate signed by a custom CA certificate to manage client authentication.

Security Settings →  Trusted CA Certificates

Load CA Certificates

This feature allows user to specify which certificate to trust when performing server authentication.
Build-in trusted: (Default) Build-in trusted certificates
Custom trusted certificate: Uploaded Certificates
All trusted Certificates: Both built-in and uploaded Certificates

These trusted CA certificates will be used for the authentication server TLS certificate

Security Settings → SCEP

Basic Settings

Enable SCEP

Enables or disables the SCEP feature.

Disabled by default.

SCEP Server URL

Defines the SCEP server URL (CA or RA). The URL must include the protocol prefix. Currently, only HTTP is supported.

CA FingerPrint Infomation

Defines the fingerprint of the CA certificate.

Challenge Password

Defines the temporary challenge password included in the Certificate Signing Request (CSR) when requesting a new certificate.

Local configuration

Local Public and Private Key Length

Specifies the length of the local public and private keys.

The default setting is “3072 bit”.

The Name of Certificate Applicant

Defines the name of the certificate applicant. This field is required.

The Country of Certificate Applicant Located

Selects the country where the certificate applicant is located.

The State of Certificate Applicant Located

Defines the state or province where the certificate applicant is located.

The Locality of Certificate Applicant Located

Defines the locality of where the certificate applicant is located.

The Organization of Certificate Applicant Located

Defines the location of the organization to which the certificate applicant belongs.

The Organization Unit of Certificate Applicant

Defines the organization unit of the certificate applicant, such as a company, government agency, or nonprofit organization.

HTTP Authentication

CID

Configures the HTTP authentication user ID used to access the CA server.

Password

Configures the HTTP authentication password used to access the CA server.

Certificates and Updates

CA Certificates

Displays the CA certificate obtained through SCEP.

Note: Copy the displayed CA certificate and import it into the trusted CA certificate store on the CA server.

Client Certificate Alternative Name

Configures additional identifiers for the client certificate. These values are added as Subject Alternative Name (SAN) entries on the server and allow the device to be identified using multiple aliases. 

In the configuration file, different aliases are separated by semicolons (;).

The available options are:

The default setting is “$MAC.local”.

Update Interval before Certificate Expiration

Defines the number of days (1–30) before expiration to trigger certificate renewal. The system attempts renewal when the remaining validity is less than the defined interval.

Pressing Update Now starts the renewal manually.
The default setting is “20”.

Scope of Use

Configures where the CA and client certificates are applied. Certificates for selected modules are managed automatically via SCEP, without manual upload or renewal.

The available options are: Custom Certificate, 802.1X, OpenVPN, TR069.
The default setting is “Custom Certificate”.

Enable RADIUS Web Access Control

Selects whether to enable RADIUS web access control. Default is no

Action upon Radius Auth Server Error

Select the RADIUS authentication server error handling method,the user can choose between: Reject Access, or Authentificate locally,  the default is “local verification”

Enable Bypass Locked State

Once enabled, RADIUS accounts can bypass the webUI locked state caused by local accounts.
Disabled by default.

RADIUS Auth Protocol

Configures RADIUS authentication protocol

RADIUS Auth Server Address

RADIUS Auth Server Port

RADIUS Shared Secret

RADIUS VSA Vendor ID

Configure the RADIUS VSA provider ID to match the RADIUS server’s configuration. The default value for Grandstream Networks Inc is 42397

RADIUS VSA Access Level Attribute

Configure the RADIUS VSA access level attributes to match the configuration of the RADIUS server. Incorrect settings will cause Radius authentication to fail.

E911

Enable E911

Enable Enhanced 911 call. Default is disabled

E911 Emergency Numbers

A user can configure multiple emergency numbers separated with the delimiter symbol “;”. Default is 911.

Geolocation-Routing Header

When enabled, the device includes a “Geolocation-Routing: Yes” header in the SIP INVITE for E911 calls to support location-based emergency call routing.
Disabled by default.

Priority Header

If “Yes”, E.911 INVITE message includes the “Priority” header with the value “emergency”. Default is “No”.

Geolocation Header Format

Selects the format used for the SIP Geolocation header when sending emergency calls:

Set to “Legacy” by default.

HELD

HELD Protocol

Configure HELD transfer protocol. HTTP or HTTPS. Default is HTTP.

HELD Synchronization Interval

The valid synchronization interval is between 30 to 1440 minutes. The synchronization is off when the interval is 0. Default is 0.

HELD Location Types

Configure “locationType” element in the location request. “geodetic”, “civic” and “location URI”.

HELD Use LLDP Information

If set to “Yes”, LLDP protocol will be used to gather information about the HT device including information about the ChassisID and PortID. Otherwise, the system defaults to using the MAC address of the gateway and phone.

Default setting is “No”.

HELD NAI

If ‘Yes’ is selected, the Network Access Identifier (NAI) is included as the device identity in location requests sent to the Location Information Server (LIS). Default is “No”.

HELD Identity 1-10

The HELD Identity refers to Hierarchical Mobile IPv6 (HMIPv6) Enhanced Location-based Discovery (HELD) protocol. This protocol is utilized to determine the location of a mobile device when making an emergency call, such as a 911 call, over an IP-based network.
You can configure up to 10 HELD identities. Maximum allowed length is 64

HELD Identity 1-10 Value

Defines the HELD Identity value. Maximum allowed length is 64

Location Server

Location Server

Configures the location server (LIS) address.

Location Server Username

Configures Location Server (LIS) username. Maximum allowed length is 64.

Location Server Password

Configures Location Server (LIS) password. Maximum allowed length is 64.

Secondary Location Server

Configures secondary location server (LIS) address.

Secondary Location Server Username

Configures secondary location server (LIS) username. Maximum allowed length is 64.

Secondary Location Server Password

Configures secondary location server (LIS) password. Maximum allowed length is 64.

Ethernet Settings

General Settings

Internet Protocol

Selects one of the following IP protocol modes:

Note: Make sure to reboot the HT81x V2 unit for the changes to take effect.

IPv4

IPv4 address type

Allows users to configure the appropriate network settings on the HT81x V2 to obtain IPv4 address. Users could select DHCP, Static IP or PPPoE. By default, it is set to DHCP.

Host Name (Option 12)

Specifies the name of the client. The name may or may not be qualified with the local domain name. This field is optional but may be required by ISP.

DHCP Domain

Allows user to configure DHCP domain name. This option specifies the domain name that the client should use when resolving hostnames via the Domain Name System. This field is optional.

Vendor Class ID (Option 60)

Exchanges vendor class ID by clients and servers to convey particular configuration or other identification information about a client. Default is HT8XXV2.

PPPoE account ID

Defines the PPPoE username. Necessary if ISP requires you to use a PPPoE (Point to Point Protocol over Ethernet) connection.

PPPoE password

Specifies the PPPoE account password.

PPPoE Service Name

Defines PPPoE service name. If your ISP uses a service name for the PPPoE connection, enter the service name here. This field is optional.

 Preferred DNS server 1-4

Specifies preferred DNS server to use when DHCP or PPPoE are set.
You can set up yo 4 Preferred DNS Servers.

IPv6

IPv6 address type

Configures the IPv6 address of the phone:

Static address type

Static IPv6 Address

When using fully static type IPv6, enter a static IPv6 address.

IPv6 Prefix Length

Enter the static IPv6 address prefix length.

DNS Server 1

Enter DNS server 1 address.

DNS Server 2

Enter DNS server 2 addres.

Preferred DNS Server

Enter preferred DNS server address.

802.1x Settings

802.1x Mode

 Allow users to enable/disable 802.1X Mode. The modes available are:

Disabled by default.

802.1x Identity

Enter 802.1X identity information.

802.1x Password

Enter 802.1X MD5 password.

802.1x CA Certificate

 Paste down the 802.1X certificate .pem file.

802.1x Client Certificate

Paste down the Client.pem certificate file containing certificate and key. Maximum allowed length is 8192.

Enable DDNS

Enable DDNS function. Disabled by default.

DDNS Server

Select DDNS server used, options are:

DDNS Username

Sets the username of the DDNS server.

DDNS Password

Sets the password of the DDNS server.

DDNS Hostname

Sets the domain name of the DDNS server.

DDNS Hash

Sets the hash value of the DDNS server.

General Settings

Device Mode

Controls whether the device is working in NAT Router, Bridge, or WAN Only mode.

The default mode is NAT Router. Save the setting and reboot before configuring the HT81x V2.

Enable UPnP support

When set to Yes, the HT81x V2 acts as a UPnP gateway for your UPnP-enabled applications. UPnP = Universal Plug and Play. The default is No.

Uplink bandwidth

Downlink bandwidth

DMZ IP

This function forwards all WAN IP traffic to a specific IP address if no matching port is used by HT81x V2 or in the defined port forwarding.

NAT maximum ports

Defines the number of ports that can be managed while in NAT router mode.
Range: 0 – 4096, default is 1024. Typically, one port per connection

NAT TCP timeout

NAT TCP idle timeout in seconds. The connection will be closed after preconfigured, timeout if not refreshed. Range: 0 – 3600

NAT UDP timeout

NAT UDP idle timeout in seconds. The connection will be closed after preconfigured, timeout if not refreshed. Range: 0 – 3600, default is 300

Reply to ICMP on WAN port

When set to Yes, the HT81x V2 responds to the PING command from other computers but is also made vulnerable to DOS attacks. The default is No.

Cloned WAN MAC Addr

This allows the user to change/set a specific MAC address on the WAN interface. Note: Set in Hex format.

LAN Port VLAN Feature Under Bridge Mode

This feature allows users to configure a different VLAN tag and priority value for the second network port when HT81x V2 is configured in bridge mode.

The priority value range is 0-7, The VLAN tag range is 0-4094.
The default VLAN Tag and Priority value are 0.

Enable LAN DHCP

When set to Yes, the device will function as a simple router and the LAN port will provide IP addresses to the internal network. Connect the WAN port to ADSL/Cable modem or any other equipment that provides access to the public Internet. The default setting is Yes.

LAN DHCP Base IP

Base IP Address for a LAN port.

The default factory setting is 192.168.2.1.

Note: When the device detects WAN IP is conflicting with LAN IP, the LAN base IP address will be changed based on the network mask the effective subnet will be increased by 1.
For example; 192.168.2.1 will be changed to 192.168.3.1 if the netmask is 255.255.255.0. Then the device will reboot

LAN DHCP Start IP

LAN DHCP End IP

Default value is 199. This parameter allows a user to limit the number of local network devices connected to the internal router.

LAN Subnet Mask

Sets the LAN subnet mask.
Default value is 255.255.255.0

DHCP IP Lease Time

Default value is 120 hrs. (5 days). The length of time the IP address is assigned to the LAN clients. Value is set in units of hours.

Port Forwarding

Forwards a matching (TCP/UDP) port to a specific LAN IP address with a specific (TCP/UDP) port.

Up to 8 rules are available.

Management Interface

Enable Management Interface

 Allows activation of a dedicated interface for remote management and configuration of the device.
Disabled by Default.
Note: The change requires a reboot to take effect.

Management Access

defines the allowed methods (protocols) and permissions for remote access and configuration of the device, two options can be selected

Enable SNMP Through Management Interface

Allows the activation of SNMP (Simple Network Management Protocol) access exclusively through the dedicated management interface for monitoring and managing the device remotely.
Disabled by Default.
Note: The change requires a reboot to take effect.

Enable TR069 Through Management Interface

Allows the activation of TR-069 protocol access exclusively through the dedicated management interface for remote device management and provisioning.
Disabled by Default.
Note: The change requires a reboot to take effect.

Enable Syslog Through Management Interface

Allows the activation of syslog communication exclusively through the dedicated management interface for remote logging and monitoring of device events.
Disabled by Default.
Note: The change requires a reboot to take effect.

Enable Radius Through Management Interface

Configure routing so that Radius functionality is accessible through management.
Note: The change requires a reboot to take effect.

Management Interface IPv4 Address

802.1Q/VLAN Tag

Allows the tagging of network packets with VLAN information to segment and prioritize network traffic.
The Valid Range is 0-4094, Default value is 0

802.1p priority value

Assigns a priority value to network packets for Quality of Service (QoS) and traffic prioritization purposes.
The Valid Range is 0-7, Default value is 0

IPv4 address type

Configures the address type of the management network port, the options are:

IP Address

Configure the IPv4 address of the management network port

Subnet Mask

Defines the subnet mask

Default Router

Defines default gateway

DNS Server 1

Defines DNS server 1 address

DNS Server 2

Defines DNS server 2 address

OpenVPN® Settings

Enable OpenVPN®

Enables or disables the OpenVPN® feature.
Disbaled by default.

OpenVPN® Server Address

Specifies the IP address or FQDN of the primary OpenVPN® server.

OpenVPN® Port

Configures the port of the primary OpenVPN® server.
The default setting is “1194”.

OpenVPN® Server Secondary Address

Specifies the IP address or FQDN of the secondary OpenVPN® server. If the primary OpenVPN® server is unavailable, the device automatically switches to the secondary server to maintain a secure VPN connection.

OpenVPN® Secondary Port

Configures the port of the secondary OpenVPN® server.
The default setting is “1194”.

Randomly Select Server

Enables or disables random server selection. When enabled, OpenVPN randomly selects a configured server when initiating a connection. When disabled, servers are used in the order in which they are configured.
Disabled by default.

OpenVPN® Interface type

Specifies the Interface type of OpenVPN®. The available options are: TAP or TUN.
The default setting is “TUN”.

OpenVPN® Transport

Specifies the Transport Type of OpenVPN®. The available options are: UDP or TCP.
The default setting is “UDP”.

Enable OpenVPN® LZO Compression

Enable or disables OpenVPN® LZO Compression. 
Enabled by default.

OpenVPN® Encryption

 Select the OpenVPN® Encryption algorithm. The available options are: 

The default setting is “BF-CBC 128 bit default key”.

OpenVPN® Diges

Select the OpenVPN® Digest. Default is SHA1.

OpenVPN® Username

Configure the OpenVPN® username.

OpenVPN® Password

 Configure the OpenVPN® password.

OpenVPN® CA

Specifies the OpenVPN® CA. The maximum length is 8192.

OpenVPN® Certificate

Specifies the OpenVPN® Certificate. The maximum length is 8192.

OpenVPN® Client Key

Specifies the Client Key. The maximum length is 8192.

OpenVPN® Client Key Password

Configures the OpenVPN® Client Key Password. The maximum length is 64.

OpenVPN® TLS Key

Specifies the static TLS key used by TLS-Auth or TLS-Crypt to authenticate or encrypt the OpenVPN control channel.

OpenVPN® TLS Key Type

Selects how the static TLS key is used to protect the OpenVPN control channel. The available options are:

The default setting is “none”.

OpenVPN® Additional Options

Defines additional OpenVPN configuration parameters that are appended to the OpenVPN configuration file. Parameters must be separated by semicolons (;).
Use this option with caution. Ensure the specified parameters are supported by OpenVPN and do not unintentionally override other configured settings.

Example: connect-retry 5;tls-client;keepalive 10 60

Advanced Settings

Enable LLDP

Controls the LLDP (Link Layer Discovery Protocol) service.

The default setting is “Enabled”.

LLDP TX Interval

Configures LLDP TX Interval (in seconds). Valid range is 1 to 3600.

The Default value is 60.

Enable CDP

Enables/Disables CDP “Cisco Discovery Protocol”.

The default setting is “Enabled”.

Enable Manual VLAN Configuration

Allows the device to keep the VLAN configuration without applying it.

Layer 2 QoS 802.1Q/VLAN Tag

Assigns the VLAN Tag of the Layer 2 QoS packets that can be used to identify and distinguish different VLANs.

Valid range is 0 to 4094. The default value is 0.

Layer 2 QoS SIP 802.1p

Prioritizes SIP traffic at Layer 2 using the 802.1p standard for Quality of Service (QoS).

The valid range 0-7. The default value is 0.

Layer 2 QoS RTP 802.1p

Prioritizes RTP (Real-time Transport Protocol) traffic at Layer 2 using the 802.1p standard for Quality of Service (QoS).

The valid range 0-7. The default value is 0.

Use DNS to detect network connectivity

Use DNS to detect WAN side network issues.

The default setting is “No”.

Use ARP to detect network connectivity

Use ARP to check network connection.

The default value is “Yes”.

Maximum Transmission Unit (MTU)

Configures the network Maximum Transmission Unit (MTU) in bytes, which defines the largest packet size that can be transmitted. The default is 1500 bytes, with a valid range of 576–1500 bytes.

Firewall settings

Black List for WAN Side Port

Ports on the blocklist will be disabled on the device.

Proxy

HTTP Proxy

Specifies the HTTP proxy URL that the phone uses to send HTTP traffic. The proxy server acts as an intermediary, routing packets from the phone to their destination.

HTTPS Proxy

Specifies the HTTPS proxy URL that the phone uses to send traffic. The proxy server acts as an intermediary, routing encrypted packets from the phone to their destination.

Bypass Proxy for

Specifies URL that should be accessed directly instead of through the configured proxy. Traffic matching this entry bypasses the proxy server.

Static DNS Cache

NAPTR

NAPTR DNS Cache Name

The domain name to which this resource record refers.

Maximum length is 512 characters.

NAPTR DNS Cache Time Interval (s)

(Time to Live) refers to the time interval that the record may be cached before the source of the information should be consulted again.

Valid range is from 300 to 65535. Default value is “300”.

NAPTR DNS Cache Order

Specifies the order in which the NAPTR record need to be processed, low numbers are processed before high numbers.

Valid range is from 0 to 65535. Default value is “0”.

NAPTR DNS Cache Preference

Refers to the order in which NAPTR records with the same “Order” values need to be processed. records are processed from lower preference numbers to higher preference numbers.

Valid range is from 0 to 65535. Default value is “0”.

NAPTR DNS Cache Replacement

This parameter contains the next FQDN to query for NAPTR, SRV, or address records.

Maximum length is 64 characters.

NAPTR DNS Cache Service

Specifies the services available in this domain. The replacement field is used to get to this service.

It can also specify the protocol used to communicate with the server that offers this service.

In SIP, three services are defined along with their resolution services (resolution services are defined after the “+” sign):

Maximum length is 64 characters and default value is “SIP+D2U”.

SRV

SRV DNS Cache Name

The domain name of the wanted service.

Maximum supported length is 512 characters.

SRV DNS Cache Time Interval (s)

(Time to Live) refers to the time interval that the record may be cached before the source of the information should be consulted again.

Valid range is from 300 to 65535. Default value is “300”.

SRV DNS Cache Priority

Enables to prioritize target hosts that support the given service. Lowest number will get the highest priority. Target hosts with the same priority will be tried in an order defined by the weight field.

Valid range is from 0 to 65535. Default value is “0”.

SRV DNS Cache Weight

Specifies the weight for entries with the same priority. Larger weight will get higher priority.

Valid range is from 0 to 65535. Default value is “0”.

SRV DNS Cache Target

The domain name of the target host.

Maximum supported length is 64 characters.

SRV DNS Cache Port

The port on the target host of the specified service.

The valid range is 0-65535. Default value is “0”.

A

A DNS Cache Name

The domain name to which the record refers.

Maximum supported length is 512 characters.

A DNS Cache Time Interval (s)

(Time to Live) refers to the time interval that the record may be cached before the source of the information should be consulted again.

Valid range is from 300 to 65535. Default value is “300”.

A DNS Cache IP Address

The IP address associated with the DNS record name.

Upgrade → Firmware

Upgrade via Manually Upload

Firmware

Uploads the .bin firmware file.

Upgrade via Network

Upgrade Via

Selects firmware upgrade/provisioning method: TFTP, HTTP, HTTPS, FTP or FTPS. Default is HTTPS.

Firmware Server Path

Sets IP address or FQDN of firmware server. The URL of the server that hosts the firmware release.

Note: You can specify the protocol used in the Firmware Server Path. (example: https://192.168.5.120), this will bypass the “Upgrade Via” method.

HTTP/HTTPS/FTP/FTPS User Name

Enters username to authenticate with HTTP/HTTPS FTP/FTPS server.

HTTP/HTTPS/FTP/FTPS Password

Enters password to authenticate with HTTP/HTTPS FTP/FTPS server.

Firmware File Prefix

Checks if firmware file is with matching prefix before downloading it. This field enables user to store different versions of firmware files in one directory on the firmware server.

Firmware File Postfix

Checks if firmware file is with matching postfix before downloading it.
This field enables user to store different versions of firmware files in one directory on the firmware server.

Upgrade → Config File

Manual configuration

Upload Configuration

Uploads the configuration file in .txt or .xml formats

Restore From Backup Configuration

Restore From Backup Configuration

Download Device Configuration

Downloads Device Configuration in .txt format

Download Device XML Configuration

Downloads Device Configuration in .xml format

Export Backup Configuration

Export Backup Configuration in .xml format

Configure via Network

Config Upgrade via

Selects Config file upload method: TFTP, HTTP, HTTPS, FTP or FTPS. Default is HTTPS.

Config Server Path

Sets IP address or FQDN of configuration server. The URL of the server that hosts the configuration file to provision HT81x V2.

 
Note: You can specify the protocol used in the Config Server Path. (example: https://192.168.5.120), this will bypass the “Upgrade Via” method.

HTTP/HTTPS/FTP/FTPS User Name

Enters username to authenticate with HTTP/HTTPS FTP/FTPS server.

HTTP/HTTPS/FTP/FTPS Password

Enters password to authenticate with HTTP/HTTPS FTP/FTPS server.

XML Config File Password

Decrypts XML configuration file when encrypted. The password used for encrypting the XML configuration file using OpenSSL.

Config File Prefix

Checks if configuration files are with matching prefix before downloading them. This field enables user to store different configuration files in one directory on the provisioning server.

Config File Postfix

Checks if configuration files are with matching postfix before downloading them. This field enables user to store different configuration files in one directory on the provisioning server.

Upgrade → Provision

Allow DHCP Option 66 or 160 to override server

Obtains configuration and upgrade server’s information using options 66 from DHCP server.
Notes:

Auto Provision

Sends multicast “SUBSCRIBE” message for provisioning at booting stage, used for PnP (Plug-and-Play) configuration. Default is Yes.

Enable using tags in URL

Allows users to configure variables on the configuration server path to differentiate the directories on the server.

Additional Override DHCP Option

Configures additional DHCP Option to be used for firmware/config server instead of the configured firmware/config server or the server from DHCP Option 66 and 160. the available options are: 

Set to “None” by default

Automatic Upgrade

Automatic Upgrade

Specifies when the firmware upgrade process will be initiated; there are 4 options:
No: The HT81x V2 will only do an upgrade once at boot up.
Check every X minutes: User needs to specify a period in minutes.
Check every day: User needs to specify the start hour and the end hour of the day (0-23).
Check every week: User needs to specify “Day of the week (0-6)”. (Day of week is starting from Sunday).
Default is No.

Randomized Automatic Upgrade

Randomized Automatic Upgrade within the range of hours of the day or postpone the upgrade every X minute(s) by random 1 to X minute(s).
Disabled by default.

Firmware Upgrade and Provisioning

Defines when the device checks the server for new firmware and configuration files:

Default value is set to “Always Skip the Firmware Check”.

Config Provision

Download and Process All Available Config Files

This feature allows users to download and process all available config files. By default, the device will provision the first available config in the order of cfgMAC > cfgMAC.xml > cfgMODEL.xml > and cfg.xml (corresponding to device-specific, model-specific, and global configs). 

If this option is enabled, the device will inverse the downloading process to cfg.xml > cfgMODEL.xml > cfgMAC.bin > cfgMAC.xml and add cfgMAC_override.xml. The following files will override the files that have already been loaded and processed.

The default value is “No”

Config Provision Order

Administrators can define the preferred order in which the device checks for configuration files during startup. The system will sequentially attempt to load the listed files, and try to apply the first successfully retrieved configuration, the files available are:

Upgrade → Advanced Settings

Validate Hostname in Certificate

Configures to validate the hostname in the SSL certificate.
Disabled by default.

Configuration File Types Allowed

Allows users to configure provision configuration file type in xml file only or all file types.
Set to “All” by default.

Enable SIP NOTIFY Authentication

The device will challenge NOTIFY with 401 when set to “Yes”.
Set to “Yes” by default.

Validate Server Certificates

Configures whether to validate the server certificate when downloading the firmware/config file. If set to “Yes”, the device will download the firmware/config file only after the server is validated.
Disabled by default
Note: This option requires a reboot to take effect.

Syslog

Syslog Server

URL or IP address of the syslog server.

Syslog Level

Select the HT81x V2 to report the log level. Default is NONE. The level is one of EXTRA DEBUG, DEBUG, INFO, WARNING or ERROR. Syslog messages are sent based on the following events:
1. product model/version on boot up (INFO level)
2. NAT related info (INFO level)
3. sent or received SIP message (DEBUG level)
4. SIP message summary (INFO level)
5. inbound and outbound calls (INFO level)
6. registration status change (INFO level)
7. negotiated codec (INFO level)
8. Ethernet link up (INFO level)
9. SLIC chip exception (WARNING and ERROR levels)
10. memory exception (ERROR level)
extra syslog style (EXTRA DEBUG level)

Syslog Protocol

Allow encrypted SSL/TLS transmission to the syslog server if SSL/TLS is selected, the default value is UDP

Notes: 

Syslog Header Format

Specifies the formatting of the Syslog message header. When RFC3164 Compliant is selected, the device sends Syslog messages with a header that includes the PRI value and timestamp, formatted according to RFC 3164 for compatibility with standard Syslog servers. Selecting Default uses the device’s native header format.
Default value is “Default”

Send SIP Log

Sets whether to include SIP logs in the system log

Default value is “Yes”

Debug

Ethernet Capture

 Enables the capturing and analysis of Ethernet network traffic for troubleshooting and monitoring purposes.

With secret key information

Allows users to make packet capture including the secret key to decrypt the captured TLS packets. Default value is No.

Port Record

Allows the recording of port-level call information, such as call duration, caller ID, and call status, for monitoring and logging purposes.

Core Dump

Provides generated core dump file if unit malfunctions. Clean will be displayed if no issues.

GR909

Test To Run

Selects the type of test that wll be performed for the specified line, the following tests can be performed:

FXS Line

Defines the FXS line under test

Run Interval

Defines the run Interval in seconds, the default value is 120 seconds, the default range is 0-604800 seconds

Automatic restart

This option triggeres an automatic reboot of the unit, the available options are:

Default is “No”.

Restore Factory

Reset Type

Note: After choosing the reset type, you will have to click the reset button for it to take effect.

PROFILE x → General Settings

Account Registration

Profile Active

Activates / Deactivates the accounts. The FXS port configuration will not change if disabled, although the port will not be operational, in this state, there will be no dial tone when picking up the analog phone and making/receiving calls will not be possible.

Primary SIP Server

Configures SIP server IP address (Supports both IPv4 and IPv6 addresses) or domain name provided by VoIP service provider. (For example: sip.mycompany.com, IPv4:192.168.5.170, or IPv6: fe80::20b:82ff:fe75:211d). This is the primary SIP server used to send/receive SIP messages from/to HT81x V2.

Failover SIP Server

Defines failover SIP server IP address (Supports both IPv4 and IPv6 addresses) or domain name provided by VoIP service provider. (For example: sip.mycompany.com, IPv4:192.168.5.170, or IPv6 fe80::20b:82ff:fe75:211d:). This server will be used if primary SIP server becomes unavailable.

Prefer Primary SIP Server

 Selects to prefer primary SIP server. The account will register to primary Server if registration with Failover server expires. Default is No.

Outbound Proxy

Specifies IP address (Supports both IPv4 and IPv6 addresses) or domain name of outbound Proxy, or media gateway, or session border controller. (For example: proxy.myprovider.com, IPv4: 192.168.5.170, or IPv6: fe80::20b:82ff:fe75:211d). It’s Used by HT81x V2 for firewall or NAT penetration in different network environments. If symmetric NAT is detected, STUN will not work and only outbound proxy can correct the problem

Backup Outbound Proxy

Configures the backup outbound proxy to be used when the “Outbound Proxy” registration fails. (For example: proxy.myprovider.com, or IP address, if any: IPv4: 192.168.5.170/ IPv6: fe80::20b:82ff:fe75:211d). By default, this field is left empty.

Prefer Primary Outbound Proxy

If the user configures this option to “Yes”, when the registration expires, the device will re-register via primary outbound proxy. By default, this option is disabled.

From Domain

Allows users to add the actual domain name, it will override the from header.This is an optional configuration.

Allow DHCP Option 120 (override SIP server)

Configures the HT81x V2 to collect SIP server address from DHCP option 120. Default is No.

Tel URI

If the device has an assigned PSTN telephone number, this field should be set to “User=phone”. A “User=phone” parameter will be attached to the Request-Line and “To” header in the SIP request to indicate the E.164 number. If set to “Enabled”, “tel:” will be used instead of “sip:” in the SIP request.
Disabled by default.

Network Settings

Layer 3 QoS SIP DSCP

the Diff-Serv value for SIP packets in decimal, the range is 0-63, default value is 26

Layer 3 QoS RTP DSCP

Diff-Serv valuefor RTP packets in decimal, the range is 0-63, default value is 46

DNS Mode

Selects DNS mode to use for the client to look up server. One mode can be chosen.
A Record (Default): resolves IP Address of target according to domain name.
SRV: DNS SRV resource records indicate how to find services for various protocols.
NAPTR/SRV: Naming Authority Pointer according to RFC 2915.
Use Configured IP: If the SIP server is configured as domain name, device will not send DNS queries, but will use “Primary IP” or “Backup IP” to send SIP message if at least one of them is not empty. It will try to use “Primary IP” first, after 3 tries without any response, it will switch to “Backup IP 1”, then “Backup IP 2”, and then it will switch back to “Primary IP” after 3 retries.

DNS SRV Failover Mode

 Configure the preferred IP mode when DNS Mode is SRV or NAPTR/SRV.
• Default SIP request will always be sent to the address with the top priority based on the SRV query result, even if this address is different from the registered IP address.
• Saved one until DNS TTL SIP request will always be sent to the registered IP address until DNS TTL expires or registered IP address is unreachable.
• Saved on until no response SIP request will always be sent to the registered IP address only until registered IP address is unreachable.
• Failback follows failback expiration time: the primary server regains control only after the failback expiration time, allowing the secondary server to handle requests until then.

Failback Timer

 When the primary SBC is up, device will send SIP requests to the primary SBC. If at any point device fails over to the secondary SBC, the SIP requests will stay on the failover SBC for the duration of the failback timer. When the timer expires, device will send SIP requests to the primary SBC, (in minutes. Default is 60 minutes, max 45 days).

Maximum Number of SIP Request Retries

This feature allows user to configure the number of SIP retries before failover occurs. (between 1 and 10, default is 2).

Register Before DNS SRV Failover

This feature is used to control whether the device need to initiate a new registration request (following existing DNS SRV fail-over mode) first and then direct the non-registration SIP request (INVITE) to the new successfully registered server or not.

Primary IP

The main IP address used for communication and control.

Backup IP1

The secondary IP address used as a backup for communication in case the Primary IP fails.

Backup IP2

 The third IP address used as an additional backup for communication in case both the Primary IP and Backup IP1 fail.

NAT Traversal

Indicates type of NAT for each account. This parameter configures whether the NAT traversal mechanism is activated. Users could select the mechanism from No, Keep-alive, STUN, UPnP, Auto, VPN.

The default setting is “No”.

Use NAT IP

Defines NAT IP address used in SIP/SDP messages. It should only be used if required by ITSP.

Proxy-Require

Determines a SIP Extension to notify the SIP server that the HT81x V2 is behind a NAT/Firewall.

PROFILE x → SIP Settings

SIP Basic Settings

SIP Registration

Controls whether the HT81x V2 needs to send REGISTER messages to the proxy server. The default setting is Yes.

SIP Transport

Selects transport protocol for SIP packets; UDP or TCP or TLS. Please make sure your SIP Server or network environment supports SIP over the selected transport method. Default is UDP.

Unregister On Reboot

Controls whether to clear SIP user’s information by sending un-register request to the proxy server. The un-registration is performed by sending a REGISTER message with “Expires=0” parameter to the SIP server. This will unregister the SIP account under the concerned FXS page.Unregister on reboot option can be set to “No”, “All” or “Instance”.

Default value is set to “No”

Outgoing Call without Registration

Enables the ability to place outgoing calls even if the account is not registered (if allowed by ITSP); device will not be able to receive incoming calls. Default is No.

Register Expiration

Refreshes registration periodically with specified SIP proxy (in minutes). Maximum interval is 65535 minutes (about 45 days).
Default is 60 minutes (or 1 hour).

Re-register before Expiration

Sends re-register request after specific time (in seconds) to renew registration before the previous registration expires.

SIP Registration Failure Retry Wait Time

Sends re-register request after specific time (in seconds) when registration process fails. Maximum interval is 3600 seconds (1 hour).
Default is 20 seconds.

Use Random SIP Registration Failure Retry Wait Time

When enabled, the waiting time to resend a SIP REGISTER request to the SIP server in case of registration failure will be a random number in the following range.

Default setting is disabled

Random SIP Registration Failure Retry Wait Time Range

Allows users to set a wait time (in seconds) before attempting to send a SIP registration after each failure. The wait time will be chosen randomly within this range.

Valid values range from 60 to 600 seconds.

SIP Registration Failure Retry Wait Time upon 403 Forbidden

Sends re-register request after specific time (in seconds) when registration process fails with error 403 Forbidden. Maximum interval is 3600 seconds (1 hour). Default is 1200 seconds.

Port Voltage Off upon no SIP Registration or SIP Registration Failure

Cuts off voltage to the port if there is no SIP registration or if SIP registration fails, preventing unwanted calls.
(in minutes. Between 0-60, default is 0. 0 means port voltage is never turned off)

Delay Time of Port Voltage Off Timer Since Boot

Sets the delay time after boot before the FXO port voltage turns off. It controls the timing for powering down FXO ports on the gateway. The value is in minutes. Between 0-60, default is 0

Enable SIP OPTIONS/NOTIFY Keep Alive

Enables SIP OPTIONS or SIP NOTIFY to track account registration status so the ATA will send periodic OPTIONS/NOTIFY message to server to track the connection status with the server.
Default setting is No.

SIP OPTIONS/NOTIFY Keep Alive Interval

Configures the time interval when the ATA send OPTIONS or NOTIFY message to SIP server. The default setting is 30 seconds, which means the ATA will send an OPTIONS/NOTIFY message to the server every 30 seconds. The default range is 1-64800.

SIP OPTIONS/NOTIFY Keep Alive Max Lost

Defines the Number of max lost packets for SIP OPTIONS Keep Alive before re-registration. Between 3-10, default is 3.

SUBSCRIBE for MWI

Sends SUBSCRIBE periodically (depends on “Register Expiration” parameter) for message waiting indication. Default is No.

Subscribe Retry Wait Time upon 403 Forbidden

Configures (in minutes) how long it takes to send a SUBSCRIBE request after a “403 Forbiden” response. Valid range is 0-10080. Default is 0, max 7 days.

Local SIP Port

Defines local port to use by the HT81x V2 for listening and transmitting SIP packets. Default value is 5060

Use Random SIP Port

 Controls whether to use configured or random SIP ports. This is usually necessary when multiple HT81x V2 are behind the same NAT.
The default is Yes.

Hold Target Before Refer

Allows user to hold or not hold the phone call before referring.
The default setting is Yes.

Refer-To Use Target Contact

Includes target’s “Contact” header information in “Refer-To” header when using attended transfer. Default is No. 

Remove OBP from Route Header

Removes outbound proxy info in “Route” header when sending SIP packets.
Default setting is No.

Support SIP Instance ID

Gives the users the possibility of making conference calls by pressing “Flash” key, when it’s enabled by dialing *23 +second callee number. Default is No

Support outbound

Enables/disables outbound support.

Support GRUU

Enables/disables GRUU support.

SIP URI Scheme When Using TLS

Specifies if “sip” or “sips” will be used when TLS/TCP is selected for SIP Transport. The default setting is “sips”.

Use Actual Ephemeral Port in Contact with TCP/TLS

Controls the port information in the Via header and Contact header. If set to “No”, these port numbers will use the permanent listening port on the phone. Otherwise, they will use the ephemeral port for the connection. Default is No.

Use Request Routing ID in SIP INVITE Header

This options enables the inclusion of a routing ID in the SIP INVITE header for directing the request to a specific endpoint or route.
Note: the HT supports multiple DIDs per FXS port, this allows single port to receive calls for multiple numbers based on the configured Routing ID or other call-matching settings.

Use Privacy Header

Determines if the “Privacy header” will be presented in the SIP INVITE message and if it includes the caller info in this header. If set to Default, it will add Privacy header unless special feature is Telkom SA or CBCOM. Default is Default.

Use P-Preferred-Identity Header

Specifies if the P-Preferred-Identity Header will be presented in the SIP INVITE message. If set to “default”, the P-Preferred-Identity Header will be omitted in SIP INVITE message when Telkom SA or CBCOM is active. If set to “Yes”, the P-Preferred- Identity Header will always be presented. If set to “No”, it will be omitted. Default setting is: Default.

Use P-Access-Network-Info Header

With this feature enabled, device will populate the WAN access node with IEE-802.11a, IEE-802.11b in P-Access-Network-Info SIP header. Default is Yes.

Use P-Emergency-Info Header

This feature support of IEEE-48-addr and IEEE-EUI-64 in SIP header for emergency calls. Default is Yes.

Use P-Asserted-Identity Header

Enables or disables sending the P-Asserted-Identity Header in the SIP INVITE messages.

Disabled by default.

Use P-Early-Media Header

Enables or disables sending the P-Early-Media Header in the SIP INVITE messages.

Disabled by default.

SIP REGISTER Contact Header Uses

Configures whether the SIP REGISTER Contact Header Uses LAN address or WAN address. Default setting is “LAN Address”.

SIP REGISTER Contact Header Uses

SIP REGISTER Contact Header Uses LAN address or WAN address
By default, it uses LAN Address

SIP T1 Timeout

Defines T1 timeout value. It is an estimate of the round-trip time between the client and server transactions. For example, HT81x V2 will attempt to send a request to a SIP server. The time it takes between sending out the request to the point of getting a response is the SIP T1 timer. If no response is received the timeout is increased to (2*T1) and then (4*T1). Request re-transmit retries would continue until a maximum amount of time is defined by T2. The default is 0.5 seconds.

SIP T2 Interval

Identifies maximum retransmission interval for non-INVITE requests and INVITE responses. Retransmitting and doubling of T1 continues until it reaches the T2 value. The default is 4 seconds.

SIP Timer B

Configures SIP Timer B defined in RFC3261.

0-128 sec. Default 0, which means using 64*T1.

When this SIP Timer is set to 0, its value is calculated as:

SIP Timer B = SIP T1 Timeout × 64

E.g., If the SIP T1 Timeout is set to its default value of 0.5 seconds, then:

SIP Timer B = 0.5 × 64 = 32 seconds

SIP Timer D

Configures SIP Timer D defined in RFC3261. 0-64 seconds. Default is 0.

SIP Timer F

Configures SIP Timer F defined in RFC3261.

0-128 sec. Default 0, which means using 64*T1.

When this SIP Timer is set to 0, its value is calculated as:

SIP Timer F = SIP T1 Timeout × 64

E.g., If the SIP T1 Timeout is set to its default value of 0.5 seconds, then:

SIP Timer F = 0.5 × 64 = 32 seconds

Disable Multiple m line in SDP

Sends only one m line in SDP, regardless of how many m fields are in the incoming SDP. Default is No.

Enable 100rel

Appends “100rel” attribute to the value of the required header of the initial signaling messages.
Default is No.

Add Auth Header On Initial REGISTER

Adds “Authentication” header with blank “nonce” attribute in the initial SIP REGISTER request.
Default is No.

Enable Call Waiting Alert-Info in 180 Ringing Response

Activates the Call Waiting feature by including Call Waiting Alert-Info in the 180 Ringing response sent to the caller during an incoming call.
Default value is no.

SIP User-Agent

This feature allows users to configure SIP User Agent. If not configured, device will use the default User Agent header.

SIP User-Agent Postfix

Configures the SIP User-Agent Postfix

Add MAC in User-Agent

This feature allows users to configure “User-Agent” in the SIP header field, when this feature is set to“No”, “User-Agent” does not carry a MAC, when this feature is set “Yes except REGISTER”, “User-Agent” in REGISTERSIP header field does not carry MAC but other SIP packet header fields carries MAC, when this feature is set to “Yes to all SIP”, “User-Agent” in the SIP packet header field will carries the MAC.

Use MAC Header

This feature allows users to configure MAC Header in the SIP packet header field, when this feature is set to “No” ,the MAC header field is not carried in the SIP packet header field, when this feature is set to “REGISTER Only”, the register packet header field carries the MAC header field but the remaining SIP packets do not carry MAC header fields, when this feature is set to “Yes to all SIP”, the MAC header field is carried in the SIP data packet header field.

CSeq Tracking Mode

 Defines how the device tracks SIP CSeq values.

Use per-dialog if the SIP platform expects continuous CSeq sequencing within a dialog (per RFC behavior); per-call is typically more tolerant with certain SIP servers and proxies.
It is set to “per-call” by default.

Session Timer

Enable Session Timer

Disable the session timer when this option is set to “No”. By default, this option is enabled.

Session Expiration

Enables SIP sessions to be periodically “refreshed” via a SIP request (UPDATE, or re-INVITE). When the session interval expires, if there is no refresh via an UPDATE or re-INVITE message, the session will be terminated. Session Expiration is the time (in seconds) at which the session is considered timed out, if no successful session refresh transaction occurs beforehand. Valid range is 90-64800 seconds. Default is 180 seconds.

Min-SE

Defines Minimum session expiration (in seconds). Default is 90 seconds.

Caller Request Timer

Uses session timer when making outbound calls if remote party supports it. Valid range is 90-64800 seconds. Default is No.

Callee Request Timer

 Uses session timer when receiving inbound calls with session timer request.
Default is No.

Force Timer

Uses session timer even if the remote party does not support this feature. Selecting “No” will enable session timer only when the remote party supports it. To turn off Session Timer, select “No” for Caller and Callee Request Timer, and Force Timer. Default is No

UAC Specify Refresher

Specifies which end will act as refresher for outgoing calls.
Default is Omit.
UAC: The device acts as the refresher.
UAS: Callee or proxy server act as the refresher.

UAS Specify Refresher

Specifies which end will act as refresher for incoming calls. Default is UAC:
UAS: The device acts as the refresher.
UAC: Callee or proxy server act as the refresher.

Force INVITE

Uses INVITE message to refresh the session timer. Default is No.

When To Restart Session After Re-INVITE received

Allows users to delay posting Media Change Event, it can be set to “Immediately” or to “After replying 200OK”
The default value is “Immediately”.

PROFILE x → Codec Settings

DTMF Settings

Preferred DTMF

Sorts DTMF methods (in-audio, via RTP (RFC2833) or via SIP INFO) by priority.

Force DTMF to be sent via SIP INFO simultaneously

Configures whether or not to force DTMF to be sent via SIP INFO simultaneously. Default setting is No.

Inband DTMF Duration

Allows users to config the Inband DTMF Duration and inter-duration.
The default Duration is 100 ms. Valid range: 40-2000 ms.
The default Inter-duration is 50 ms. Valid range: 40-2000 ms.

DTMF Payload Type

 Defines payload type for DTMF using RFC2833.

Enable Multiple Sampling Rates in SDP telephone-event

This option allows the device to advertise multiple supported sampling rates for DTMF events in the SDP (Session Description Protocol), which enhances compatibility with different VoIP systems by ensuring proper DTMF signal interpretation across varying codec sampling rates.
When the option is enabled, the HT includes multiple supported sampling rates for DTMF (telephone-event) in the SDP negotiation, which allows better interoperability with VoIP systems using different codec rates.
When disabled, only a single default sampling rate is advertised, which may lead to DTMF tone mismatches if the remote system expects a different rate.

Inband DTMF Tx Gain

Adjusts the transmit gain for inband Dual-Tone Multi-Frequency (DTMF) tones during call signaling.
The Valid range is -12-12 db, default is 0

DSP DTMF Detector Duration Threshold

Allows users to config the DSP DTMF Detector Duration Threshold.
The default Duration is 30 ms. Valid range: 20-2000 ms.
The default Inter-duration is 30 ms. Valid range: 20-2000 ms.

DSP DTMF Detector Min Level

determines the minimum level of DTMF tones that the DSP DTMF detector can reliably detect, range is -45-0 dBm, default is -25

DSP DTMF Detector Snr

Sets the signal-to-noise ratio threshold for the DSP DTMF detector, determining the sensitivity to distinguish DTMF tones from background noise in the audio signal.
Range: 0-12, default is 1

DSP DTMF Detector Deviation

 Specifies the allowed frequency deviation from standard DTMF tones that the DSP DTMF detector can accommodate.
Range: 0-25, default is 25

DSP DTMF Detector Twist

Defines the maximum deviation from ideal tone frequencies allowed for reliable DTMF detection by the DSP.
Range: 0-12dB, default is 5

Enable DTMF Negotiation

Uses DTMF order without negotiation. Default is No.

RFC2833 Events Count

This feature allows users to customize the count of RFC2833 events. Default is 8.

RFC2833 End Events Count

This feature allows users to customize the count of RFC2833 end events. Default is 3.

Vocoder Settings

Vocoder Settings (in listed order)

Configures vocoders in a preference list (up to 8 preferred vocoders) that will be included with same order in SDP message. Vocoder types are G.711 A-/U-law, G.726-32, G.723, G.729, iLBC and OPUS

Voice Frames per TX

Transmits a specific number of voice frames per packet. Default is 2; increases to 10/20/32/64 for G711/G726/G723/other codecs respectively.

G.723 Rate

Operates at specified encoding rate for G.723 vocoder. Available encoding rates are 6.3kbps or 5.3kbps.
Default is 6.3kbps.