WELCOME

Thank you for purchasing the Grandstream DECT VoIP Handset.

The DP735 is a ruggedized DECT cordless IP phone that allows users to mobilize their VoIP network throughout any business, warehouse, retail store, or residential environment. It is supported by Grandstream’s DP750, DP752, and DP755 DECT VoIP base stations and delivers a combination of mobility and top-notch telephony performance. Up to 10 DP735 handsets are supported on each base station (DP755) while each DP735 supports a range of up to 400 meters outdoors (with DP755) and 50 meters indoors with 65 hours of talk time and 650 hours standby time. It features a suite of robust telephony features including support for up to 20 SIP accounts per handset (with DP755), full HD audio, a 2.4-inch color TFT LCD display, a 3.5mm headset jack, push-to-talk, a speakerphone, and more. When paired with Grandstream’s DECT Base Stations, the DP735 is a high-end handset that offers a powerful cordless DECT solution for any business or residential user.

The DP730 is a DECT cordless IP phone offering mobility and top telephony performance, compatible with Grandstream’s DP750, DP752, and DP755 DECT VoIP base stations. Each base station supports up to 10 DP730 handsets, with a range of up to 400 meters outdoors and 50 meters indoors. Features include support for up to 20 SIP accounts per handset, full HD audio, a 2.4-inch color display,  a 3.5mm headset jack, push-to-talk, and speakerphone, making it ideal for businesses or homes when paired with Grandstream’s DECT Base Stations.

The DP725 is a DECT cordless IP phone offering mobility and top telephony performance, compatible with Grandstream’s DP750, DP752, and DP755 DECT VoIP base stations. Each base station supports up to 10 DP725 handsets, with a range of up to 400 meters outdoors and 50 meters indoors. Features include support for up to 20 SIP accounts per handset, full HD audio, a 1.8-inch color display,  a 3.5mm headset jack, push-to-talk, and speakerphone, making it an affordable mid-range cordless DECT solution for business or residential users when paired with Grandstream’s DECT Base Stations.

The DP722 is a DECT cordless IP phone providing mobility and top telephony DP72x/DP73x – Headset Compatibility performance,  compatible with Grandstream’s DP750, DP752, and DP755 DECT VoIP base stations. Each base station supports up to 10 DP722 handsets, with a range of 350 meters outdoors and 50 meters indoors. Features include support for up to 20 SIP accounts per handset, full HD audio, a 1.8-inch color display, a 3.5mm headset jack, push-to-talk, and speakerphone, making it an ideal cordless DECT solution for business or residential users when paired with Grandstream’s DECT Base Stations.

The DP720 is a DECT cordless VoIP phone offering mobility and top telephony performance, compatible with Grandstream’s DP750, DP752, and DP755 DECT VoIP base stations. Each base station supports up to 10 DP720 handsets, with a range of 300 meters outdoors and 50 meters indoors. Features include support for up to 20 SIP accounts per handset, full HD audio, a 1.8-inch color display, a 3.5mm headset jack, push-to-talk, and speakerphone, making it an ideal cordless VoIP solution for business or residential users when paired with Grandstream’s DECT Base Station.

PRODUCT OVERVIEW

Feature Highlights

The following tables contain the major features of the DP handsets:

• DP735

DP735 Features at a Glance

• DP725

DP725 Features at a Glance

• DP730

DP730 Features at a Glance

• DP722

DP722 Features at a Glance

• DP720

DP720 Features at a Glance

DP735 Technical Specifications

The following table resumes all the technical specifications including the protocols/standards supported, voice codecs, telephony features, languages, and upgrade/provisioning settings for the DP735 handset:

DP735 Technical Specifications

DP725 Technical Specifications

The following table resumes all the technical specifications including the protocols/standards supported, voice codecs, telephony features, languages, and upgrade/provisioning settings for the DP725 handset:

DP725 Technical Specifications

DP730 Technical Specifications

The following table resumes all the technical specifications including the protocols/standards supported, voice codecs, telephony features, languages, and upgrade/provisioning settings for the DP730 handset:

DP730 Technical Specifications

DP722 Technical Specifications

The following table resumes all the technical specifications including the protocols/standards supported, voice codecs, telephony features, languages, and upgrade/provisioning settings for the DP722 handset:

DP722 Technical Specifications

DP720 Technical Specifications

The following table resumes all the technical specifications including the protocols/standards supported, voice codecs, telephony features, languages, and upgrade/provisioning settings for the DP720 handset:

DP720 Technical Specifications

GETTING STARTED

This chapter provides basic installation instructions including the list of the packaging contents and also information for obtaining the best performance with the DECT Cordless HD Handsets.

Equipment Packaging

• DP735

Equipment Packaging – DP735

• DP725

Equipment Packaging – DP725

• DP730

Equipment Packaging – DP730

• DP722

Equipment Packaging – DP722

• DP720

Equipment Packaging – DP720

Connecting Base Station

To set up the DP75x DECT Cordless VoIP Base Station, please follow the steps below:

You have two options for power and network connection of the base station: AC power or Power over Ethernet (PoE).

Connecting via AC power

1. Connect the micro-USB connector to the related port on the base station and connect the other end of the power adapter to an electrical power outlet.
2. Connect the supplied Ethernet cable between the Internet port on the base station and the Internet port in your network or the switch/hub device port.

Connecting via PoE

To connect the base station using PoE, you need to connect the Ethernet cable provided (or 3rd party network cable) between the Network Socket on the base station to the Ethernet port of your PoE switch/hub.

Setting up DP Handsets

Please follow the below steps to insert batteries into the Handsets:

• Open the battery compartment cover.
  1. For DP730/DP725/DP735: Inset the Li-ion battery with the electrodes in the bottom left corner.
  2. For DP722/DP720: Insert AAA batteries with the correct polarity (+ / -).
• Close the battery compartment cover.

• DP735

• DP725

• DP730

• DP722

• DP720

Battery Information

DP Handset Battery Specifications

To get the best performance of your DP Handsets, we recommend using the original batteries provided in the package or batteries compliant with the above specifications.

Setting up the Charge Station

Please refer to the following steps for setting up the charge station and charging the Handsets:

1. Connect the DC plug on the power adapter to the micro-USB or Type-C connector on the charge station.
2. Connect the other end of the power adapter to an electrical power outlet.
3. After setting up the Handsets and the charge station, place the Handsets in the charge station.

DP Base Station LED Patterns

• DP755/DP752

The DP755/DP752 has 3 LED lights on it. Please refer to the following table for the meaning of each light.

• DP750

The DP750 has 5 LED lights on it. Please see in the following table the meaning of each light.

DP Handsets Description

The LCD screen and the Keypad are the main hardware components of the DP handsets.

• DP720

DP720 Handset Keys Description

• DP722

DP722 Handset Keys Description

• DP725

DP725 Handset Key Descriptions

• DP730

DP730 Keys Description

• DP735

DP735 Handset Key Descriptions

DP Handset Icons Description

The following table contains the description of each icon that might be displayed on the LCD screen of the DP Handsets.

Handsets Icon Descriptions

DP Handsets Menu

The Handsets has an easy-to-use menu structure. Every menu opens a list of options. To open the main menu, press “Menu” (left softkey) when the Handsets is on and in standby mode. Press the Arrow keys to navigate to the menu option you require. Then press “Select” (left softkey) or OK/Selection key to access further options or confirm the setting displayed. To go to the previous menu item, press “Back” (right softkey). You can press the Power key at any time to cancel and return to standby mode. If you do not press any key, the Handsets automatically revert to standby mode after 20 seconds.

DP Handset Menu Structure Definitions

BASIC OPERATIONS

Turning the Handsets ON / OFF

To turn ON the handsets

• Long press on Power key

  

  until the LCD screen lights up.

To turn OFF the handsets

• Long press on Power key

  

  again when the handset is idle until the display turns off.

Setup Wizard

The setup wizard shows at first access to DP Handset or factory reset allowing users to configure handset language and date/time. Users can quit at any time by pressing “Skip” (left softkey).

Register DP Handsets to DP75x Base Station

Before attempting to register a DP handset, users need to open the base station subscription using one of the following methods:

Open Subscription from DP75x

To initiate the subscription process on the DP75x Base Station, press and hold the Radio/Page button for 4 seconds until the Radio icon starts blinking. Alternatively, users can reboot the base station, as the subscription window remains open for 2 minutes each time the device restarts.

Open Subscription from the Web UI

Users can open the subscription by accessing the web UI and clicking the “Open Subscription” icon. Once the action is completed successfully, a prompt will appear confirming that the subscription window has been opened, and the icon will change to green.

Open Subscription through GDMS

To open the DP75x subscription using this method, follow these steps:

1. Log in to GDMS and navigate to the VoIP Device section under the organization where the base station device is registered.
2. Locate the base station device, then click the three dots under the Options menu.
3. Select Open Subscription from the dropdown.

4. Once the subscription is successfully opened, a confirmation prompt will appear, notifying users that the subscription is active for 2 minutes.

Registering the DP Handsets

1. Open the subscription using one of the methods mentioned above.
2. On the DP Handset, press the “Subscribe” softkey if available on the main screen or access Menu 🡪 Registration 🡪 Register while the DP75x Radio icon is blinking.
3. Note: The “Subscribe” softkey appears only if the DP Handset is not registered to any DP75x base station.
4. Select BaseX (X=1-4) corresponding to the desired base station DP75x, then press Subscribe.
5. The DP Handset will search for nearby base stations and will display the RFPI code and Base station name of the discovered DP75x.
6. Press Subscribe to pair with the displayed DP75x.
7. The DP Handset will display Easy Pairing on the LCD and play an audible buzz when successful. Then it will return to the home screen, displaying the Handsets name and number assigned by the registered base station.

Using DP Handset with Multiple DP Base Stations

DP Handset can be registered to up to four different DP base stations.

Registering DP Handset to an additional DP base station

Considering DP Handset is previously registered to an initial base station, please follow the below steps to register a Handset to an additional base station:

1. Press Menu (left softkey or the selection key) to bring up the operation menu.
2. Use the arrow keys to reach Registration and select Register.
3. Navigate to an unsubscribed base using arrow keys, and click on Subscribe.
4. Make sure that the subscription is opened on the new base station.

Switching Between Different Base Stations

1. Press “Menu” (left softkey or the selection key) to bring up the operation menu.
2. Use arrow keys to reach Registration.
3. Navigate to Select Base using the arrow keys.
4. Select the desired base station and press Select.

Unregister the DP Handset

• Using DP Handsets:

1. On the DP Handset, press “Menu” (left softkey or the selection key) to bring up the operation menu.
2. Press the arrow keys to move the cursor to Registration, then press “Select” (left softkey).
3. Navigate to Deregister.
4. Select the Handsets to be unregistered and press “Deregister” (left softkey).
5. Enter the system PIN code (default: 0000).
6. Press “Done” (left softkey) to confirm or “Back” (right softkey) to cancel.

• Using DP75x Base Station UI:

1. Access DP75x Web Interface.
2. Go to Status 🡪 DECT Base Status.
3. Locate the Handsets to unregister and press the “Unsubscribe” button.

Setting the Key Lock

You can lock the keypad against unintentional entries. It is, however, still possible to pick up incoming calls even with the keypad locked.

• To enable the Keypad Lock

1. Press the Pound key “#”

   

   and hold for approximately 2 seconds.
2. The display shows Keypad Locked briefly and the key lock icon

   

   appears in the display.

• To disable the Keypad Lock

1. Press and hold the Pound key “#”

   

   to unlock the keys.
2. Keypad Unlocked appears briefly in the display and a window prompt will be displayed to confirm that the keypad is unlocked.

Locating a DP Handset from the DP Base station

In some situations, you may have a DP Handsets incorrectly positioned and you don’t know its current location. You can locate a DP Handsets from his registered DP75x base station using the below steps:

Locate via DP Base station Web UI

1. Access the Web GUI of your DP75x using the admin’s username and password.
2. Press Login to access your settings and navigate to the Status 🡪 DECT Base Status tab.
3. Choose which Handsets to locate and press the corresponding Page button.
4. A paging call will be received on the selected DP Handsets.
   Note: If you press the Page All icon

   

   , all registered DP Handsets will be receiving paging calls.
5. Once located, you can press the End Softkey on the DP Handset to end the paging call.

Locate via DP Base station

1. On the DP75x Base station front side, press Radio/Page

   

   button.
2. All registered Handsets will receive a Paging call.
3. Once located, you can end the paging calling by pressing any key on the Handsets or by pressing again Radio/Page button.

Checking System Status

You can view the system status on your handsets including the following information about the system:

Item	Description
Firmware	Current firmware version installed on DP Handset.
IP Address	The IP address of the base station DP75x if registered.
Subnet Mask	Subnet Mask of the base station DP75x if registered.
Gateway	Gateway IP of the base station DP75x if registered.
MAC address	MAC address of the base station DP75x if registered.

Item	Description
Model (RF)	Displays the product model, hardware version, and DECT region of DP Handset. i.e.: DP722/DP730 1.4A (EU)
Firmware	Current firmware version installed on DP Handset.
IPEI	International Portable Equipment Identifier. Unique “serial number” for DECT handsets.

• To check the handset status

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach the Status menu

   

   , then select Handset Status.

• To check the Base Status

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach the Status menu

   

   , then select Base Status.

Basic Network Settings

Once connected to the network, the DP75x base station will attempt to contact a DHCP server to obtain valid network settings (e.g., IP address, subnet mask, gateway address, and DNS address) by default.

The users could also configure basic network settings manually from registered DP Handsets. To configure the network settings manually, please follow the steps below:

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   and access the Network Settings menu.
3. Enter the system PIN code (default: 0000) and press the softkey “Done”.
4. To change to static IP, press ⯇ or ⯈ to select Static from the IP Settings field.
5. Enter valid values in the IP Address, Subnet Mask, Gateway, DNS Server fields.
6. Press the softkey “Save” to save and apply the new changes.
   Note: A prompt message will be displayed to confirm that the new settings are saved successfully
7. The DP Handset will display a reboot confirmation message, select “Yes” to apply the new settings or “No” to avoid rebooting the DP75x.

Change Menu and LCD Timeout

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to Display, and then press “Select” (left softkey).
4. Set desired time in seconds for Backlight timeout and for Menu timeout. Available value: 15 seconds, 30 seconds, 60 seconds or disabled. (Default is disabled)
5. Press Save (left softkey) to save and apply the new settings.

Return to Idle Screen

Press the Power Key to quickly exit the menu and return to the main idle screen.

If you do not press any key in a period of time, the LCD screen will automatically exit the menu and return to the idle screen as well.

When you are navigating on the handset’s menu, and you receive an incoming call, the LCD screen will automatically exit the menu and you can either accept or reject the call. When the call is terminated, the LCD screen will return to the idle screen.

Register SIP Account

Register Account via Web User Interface

1. Access the Web GUI of your DP75x using the admin’s username and password.
2. Press Login to access your settings, navigate to the Accounts tab, and select an account to use.
   Note: DP75x supports up to 20 accounts. An account is a set of settings including general settings, network settings, SIP settings, audio settings, call settings, ring tones, etc.
   
3. In General Settings, set the following:
   • Account Active to Yes.
   • SIP Server field with your SIP server IP address or FQDN.
   • Failover SIP Server with your Failover SIP Server IP address or FQDN. Leave empty if not available.
   • Prefer Primary SIP Server to No or Yes depending on your configuration. Set to No if no Failover SIP Server is defined. If “Yes”, the account will register to Primary SIP Server when failover registration expires.
   • Outbound Proxy with your Outbound Proxy IP Address or FQDN. Leave empty if not available.
   • SIP User ID: User account information, provided by the VoIP service provider (ITSP). Usually in the form of digits similar to a phone number or actually a phone number.
   • Authenticate ID: SIP service subscriber’s Authenticate ID is used for authentication. Can be identical to or different from the SIP User ID.
   • Authenticate Password: SIP service subscriber’s account password to register to the SIP server of ITSP. For security reasons, the password field will be shown as empty.
   • Name: Any name to identify this specific user.
4. Press Save and Apply to save your configuration.

5. Go to DECT 🡪 ACCOUNT ASSIGNEMENT
6. Select the corresponding Ringing mode (HS mode) of the assigned account: (which handset will ring when extension 1070 is called)
   • Parallel Mode: selecting parallel will mean all selected handsets will be ringing at the same time.
   • Circular Mode: all selected phones ring in sequence, beginning with the phone that follows the one that rang last.
   • Linear mode: all phones ring sequentially in the predetermined order, starting with the first phone each time.
   • Group: all phones ring simultaneously, if one handset rejects the call, the call will be rejected for the entire group.
   • HS x: the selected handset will ring.

6. Press Save and Apply to save your configuration.

After applying your configuration, your phone will register to your SIP Server.

You can verify if your DECT phone has registered with your SIP server from your DP75x web interface under Status 🡪 Account Status (a green background with Yes under the SIP Registration column for the corresponding account indicates the account(s) has been successfully registered).

PHONE SETTINGS

This chapter will help you with the instructions for configuring and changing the settings of your DP Handset.

Editing the Handset Name

The procedure to change the handset name is as follows:

• Using DP Handsets:

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Handsets Name, and then press “Select”.
4. Enter the desired name and press “Rename” and then the DP Handset will display a confirmation message that the rename operation was successful.

• Using DP75x Base Station UI:

1. Access DP75x Web Interface.
2. Go to DECT 🡪 Handset Settings.
3. In the “Handsets Settings” section for a specific handset, change the Handset Name to the desired name.

Changing the Base PIN Code

Users can change their code PIN by following the steps below:

• Using DP Handsets:

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select System Settings, and then press “Select”.
4. Enter the current code PIN (By Default is 0000), a new window will be displayed inviting you to enter the new password, when done press “Save” (left softkey) and a prompt message will be displayed to confirm that the new code PIN has been saved successfully.

• Using DP75x Base Station UI:

1. Access DP75x Web interface.
2. Go to DECT 🡪 General Settings.
3. Set a new PIN code in the Admin PIN Code field.

Note: Only digits are accepted. The minimum allowed length is 4 digits.

Selecting Phone Language

The DP Handset supports displaying texts in different languages. The handsets support 20 languages (see the table of the technical specifications). The default language of the handsets is English. You can change the language according to your requirements. To change the language of the handsets, please proceed as follows:

1. Press Menu (left softkey or the selection key) to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Phone language, then select the desired language and press “Select” (Left softkey). The LCD screen prompts “Change phone language to xxx (xxx it’ the language you selected)”
4. Press “Yes” (left softkey) to accept the change. Text displayed on the handsets will change to the selected language.

Activate/Deactivate Hands-Free Mode

This function allows you to make a call without having to hold the handsets in your hand.

1. Press the Hands-free key

   

   while you are making a call or on the idle screen to activate hands-free mode.
2. Press the Hands-free key

   

   again to deactivate the hands-free function.

Muting the Microphone

Press the Mute key to switch off the microphone during an established call. You can now talk freely without the other party hearing you and the icon of mute will be displayed on the screen. Press the Mute key again to switch the microphone back on.

Adjusting Speaker and Earpiece Volume

Press the left key ⯇ or right key ⯈ while you are on an established call to set the volume of the earphone/speaker. You can choose between 5 different levels. The default level is 3:

Volume 1 Volume 4

Volume 2 Volume 5

Volume 3

Ringtones

Setting the Ringer Volume on the Handsets

You can adjust the ringer volume for an incoming call to one of 6 levels (level 1 to 5 and off). Level 5 is the highest. (The DP Handsets are set to level 3 by default).

To configure the desired ringer volume, proceed as follows:

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Audio (For DP722/DP725/DP720) and Audio & Vibration (for DP730/DP735) 🡪 Volume.
4. Press the left and right arrow keys to change repeatedly and set the desired volume.
5. Press “Save” to confirm the volume, and a message prompt will be displayed to confirm that the new volume has been successfully saved.

If you select OFF, the icon appears in the display and the handsets will not ring for incoming calls.

Setting Ringtones on the Handsets

You can change the ringtone for an incoming call. The device has 9 different ringer melodies for you to choose from (System Ring, Ring 1-8). The default setting for the ringtone for a call is Melody 1.

To configure the desired melody, proceed as follows:

1. Press Menu (left softkey or the selection key) to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Audio 🡪 Ringtones.
4. Press “Select” (left softkey) to confirm the ringtones selected and a message prompt will be displayed

to confirm that the new ringtones have been set successfully.

Advisory Tones

Advisory tones are acoustic signals, which inform you of different actions and states on your handsets. The following advisory tones can be configured independently of each other:

• Keypad tone: it’s played when a user presses any key of the keypad (even during calls).
• Confirmation: it’s played when a user saves settings or places the handsets in the charger cradle.
• Low battery: it’s played if the capacity of the batteries is low or the handsets require charging.

To configure the advisory tones

1. Press Menu (left softkey or the selection key) to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Audio 🡪 Advisory tones, and choose which tone you want to change it.
4. Press the left and right arrow keys to either enable or disable the desired tones.
5. Press “Save” (left softkey) to confirm, and a message prompt will be displayed to confirm that the new settings have been successfully saved.

Ringtones Customization

DP base stations allow users to use custom ringtones. Custom ringtones will be stored on the DP75x base station and only selected custom ringtones will be downloaded to specific DP handsets.

DP75x base station supports up to 10 custom ringtones.

The custom ringtone should be generated using GS Ringtone Tool and named ring[1-10].bin (example: ring1.bin, ring6.bin).

To use custom ringtones, follow the below steps:

Step 1: Generate Custom Ringtone(s)

1. Download the “Grandstream IP Phone Custom Ringtone Generator” tool available at https://www.grandstream.com/support/tools
2. Run the tool and select your ringtone file to convert.

3. Press “Generate Ringfile” to finish the process. A ringtone with the filename “ring1.bin” will be created at the same location as the ringtone tool.

Step 2: Download Custom Ringtone(s) to DP75x Base Station

1. Make generated ringtone files available in your FTP, HTTP, or HTTPS server.
2. Access DP75x Web GUI and go Maintenance 🡪 Firmware Upgrade page.
3. Set “Upgrade Via” to HTTP/HTTPS or FTP/FTPS (depending on server type hosting ringtone files).
4. Set “Firmware Server Path” to the IP address or the FQDN of the server.
5. Set “Firmware Upgrade and Provisioning” to “Always Check for New Firmware”.
6. Update the change by clicking the “Save and Apply” button. Then “Reboot” or power cycle the base station to download the ringtone(s).

Step 3: Assigning a Custom Ringtone for a DP Handsets

1. Access DP75x Web GUI and go the DECT 🡪 HS Settings 🡪 HS# Settings page.
2. In Custom Ringtone, select a custom ringtone from the dropdown list.
   Note: If the list is not showing downloaded custom ringtone(s), press

   

   and check again.
3. Press “Save and Apply”. DP handsets will download the ringtone locally before using it. (Handset LCD screen will display download progress at this stage).

Date and Time

On the DP Handset, the Date and time are displayed on the idle screen and it obtains the date and time from the Simple Network Time Protocol (SNTP) server by default. If your handsets cannot obtain the date and time from the SNTP server, you need to configure the date and time manually. You can configure the time format and date format respectively. The handsets support two formats for time (12 Hours or 24 Hours) and three date formats (DD/MM/YYYY; MM/DD/YYYY; YYYY/MM/DD).

To configure date and time manually

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .

3. 

   Navigate to Date and time. Edit the current values in the Date & Time fields (you can change the date/time format using the left key ⯇ or right key ⯈ and press “Set”.
4. Press the “Save” softkey to apply your changes.

Gestures (DP730/DP735 only)

To configure Gesture options, follow the instructions below:

1. On DP730/DP735 LCD Menu Settings, select Settings 🡪 Gestures.
2. Set “Close-to-Ear Backlight” to On, to enable the LCD backlight when the handset is close to the ear.
3. Set “Facedown Hangup” to On, to enable the call hangup when the handset is put down on its face.

Facedown Hangup

If the “Facedown Hangup” option is set to ON, if DP730/DP735 is placed face down it will:

• Reject incoming calls.
• Hang up ongoing call.

Close-to-Ear Backlight

Factory Functions

The factory functions include the following diagnostic options:

• Keypad Diagnostic (on DP730/DP735) / Diagnostic Mode (on DP722/DP720/DP725)
• Audio loopback
• LCD on / off
• LCD diagnostic
• System Monitoring
• Vibration (DP730/DP735 only)
• Acceleration Sensor (DP730/DP735 only)
• Proximity sensor (DP730/DP735 only)

1. Press Menu (left softkey or the selection key) to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Factory Functions and choose which diagnostic, you need to perform:
   1. Diagnostic Mode / Keypad Diagnostic
      All LEDs will light up. All keys’ names will be displayed in red on the LCD screen before diagnosis. Press any key on the keypad to diagnose the key’s function. When done, the key’s name will display in blue on the LCD with a prompt message (PASS). To exit press “Back” (right softkey).
      Note: Long arrow UP key at any time to exit diagnostic mode.
   2. Audio loopback: Speak to the phone using speaker/handsets/headset. If you can hear your voice, your audio is working fine. Press “Back” (left softkey) to exit audio loopback mode.
   3. LCD On/Off: Select this option to turn off the LCD. Press any button to turn on the LCD.
   4. LCD Diagnostic: Enter this option and press the Left/Right arrow key to do LCD Diagnostic (you will notice that the color of the LCD will be changing). Press the right softkey to quit.
   5. System Monitoring: Displays RSSI, battery voltage, and RPN information.
   6. Vibration (DP730/DP735 only): Press the “Vibrate” key to test if the device vibrates normally. Press the right softkey to quit.
   7. Acceleration Sensor (DP730/DP735 only): Displays X, Y, Z coordinates. Change the handset position and check new values. Press the right softkey to quit.
   8. Proximity Sensor (DP730/DP735 only): Cover the proximity sensor, when the sensor is covered, the gray dot displayed on the screen will become green. Press the right softkey to quit.

DP Handsets Firmware Upgrade

The DP handsets can detect if new firmware is available when it is registered to a base station.

To upgrade the firmware on your handsets, follow the steps below:

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Firmware Upgrade and press the softkey “Select”.
4. The LCD screen will display a prompt message to confirm the firmware downloading / upgrading press the right softkey “Back” to dismiss the upgrade process.

Reboot DP Base Station

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Settings

   

   .
3. Navigate to select Settings 🡪 System Settings and choose Reboot Base.
4. Enter the Base PIN code (by default the PIN code is: 0000).
5. The LCD screen will display a prompt message to confirm rebooting the base station, press “Yes” (left softkey) to confirm or press “No” (right softkey) to cancel.

Reset DP Handsets

The users can reset the new settings made on the handsets after performing a factory reset. To reset your handsets to the default settings:

1. Press Menu to bring up the operation menu.
2. Use the arrow keys to reach Settings

   

   .
3. Navigate to select Settings 🡪 System Settings and choose Factory Reset.
4. The LCD screen will display a prompt message to confirm restoring factory settings, press “Yes” (left softkey) to confirm, and then the handsets will reboot to apply the default settings or press “No” (right softkey) to cancel.

CALL OPERATIONS

Outgoing Default Line

When a Handset is configured with more than one line, users can change the default outgoing line on the DP Handset handset using the keypad Menu 🡪 Preferences 🡪 Outgoing Default Line.

Placing calls

To place calls, you can use the following mode:

• Earpiece mode: pressing the off-hook key to dial out.
• Speakerphone mode: Press the speakerphone key to dial out.
• Headset mode: Press the off-hook key to dial out using a connected headset.

During the call, you can switch the call mode by pressing the corresponding keys or connecting a headset.

Make a Call using a Line

Making calls requires the use of SIP lines. So, you should first register the SIP account to the handsets beforehand, after registering the SIP lines, you can assign one or more outgoing lines for the handsets. The handsets can only use the assigned outgoing line(s) to place calls.

Please refer to the following methods to make calls using a line:

Method 1:

• Via default outgoing line:

1. Enter the desired number using the keypad.
2. Press the Dial key

   

   or Speaker key

   

   . The handsets will use the default outgoing line to dial out.
3. To terminate the call, press the Hang-Up key

   

   .

Note: To change the default outgoing line, please refer to [Outgoing Default Line].

• Selecting the outgoing line:

1. Enter the desired number using the keypad.
2. Press the left softkey “Call”.
3. Select the desired line to dial out.
4. To terminate the call, press the Hang-Up key

   

   .

Method 2:

1. Press Dial key

   

   or Speaker key

   

   to enter the pre- dialing screen.
2. Enter the number to dial using the keypad.
3. Press Dial key

   

   , # key (“Use # as dial key” must be configured in web configuration) or wait for 4 seconds and the call will be initiated automatically.
4. To terminate the call, press the Hang-Up key

   

   .

During the call, you can switch the call mode by pressing the corresponding keys and cancel the dialing operation by pressing the on-hook key. During the call conversations, you can press the left and right navigation keys to adjust the volume. The call duration is displayed on the LCD screen while the call is in progress and the call summary will be displayed once the call is terminated.

Dialing from Call history

Users may use their call history entries to initiate calls.

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach the Call History icon

   

   and then press “Select”.
3. Select the desired entry, then press the Dial key

   

   to establish the call.

Note: In step 3, users can press the “Options” softkey followed by the “Edit Dial” option to initiate the call.

The call history list stores the last dialed phone numbers. When the memory of the redial number list is full, the handsets will automatically erase the oldest dialed number when a new number is dialed

Dialing from Phonebook

Users may use their private or shared contacts to initiate calls.

1. Press Menu to bring up the operation menu.
2. Press Contacts to access the phonebook menu.
3. Select the contact to call.
4. Press Dial Key

   

   to initiate the call.

Note: In step 4, users can press the “Options” softkey followed by the “Edit Dial” option to initiate the call.

Intercommunication

Users may make phone calls between different handsets directly without remembering each user’s phone number.

1. Go to Handset GUI -> Shortcut
2. Configure a navigation key (up, down, left, or right key) to “Intercom”.
3. Press the key just configured at the idle state.
4. Choose the handset name that you want to call.

Answering Calls

When receiving an incoming call, you can answer the call using the following steps:

• Earpiece mode:

Press Dial Key to pick up the call, or “Accept” softkey (left softkey).

• Speakerphone mode:

Press Speaker Key to pick up the call.

• Headset mode:

Press Dial Key to pick up the call, or the “Accept” softkey using a connected headset.

Auto Answer

Users can enable the Auto Answer feature to accept and automatically answer incoming calls.

If enabled, DP Handsets will automatically answer incoming calls using speaker mode.

To activate/deactivate the auto answer feature:

• Using DP Handsets Menu
  1. Press Menu to bring up the operation menu.
  2. Select Preferences 🡪 and navigate to Auto Answer using the up/down arrow keys.
  3. Switch between Enabled/Disabled using the left/right arrow keys and “Save” after Enabling / Disabling the option.

• Using DP75x Base Station Web Interface
  1. Access DP75x Base Station Web Interface.
  2. Go to DECT 🡪 Handsets Settings 🡪 HS# Settings.
  3. Set “Enable Auto Answer” to “Yes”. (By default, set to “No”).

Off-Cradle Pickup

Users can enable the Off-Cradle Pickup feature to automatically answer incoming calls after picking up DP Handsets from its cradle. Incoming calls will be automatically answered using earpiece mode.

To activate/deactivate the off-cradle pickup:

• Using DP Handsets Menu
  1. Press Menu to bring up the operation menu.
  2. Select Preferences 🡪 and navigate to Off-Cradle Pickup using the up/down arrow keys.
  3. Switch between Enabled/Disabled using the left/right arrow keys and “Save” after Enabling / Disabling the option.

• Using DP75x Base Station Web Interface
  1. Access DP75x Base Station Web Interface.
  2. Go to DECT 🡪 Handsets Settings 🡪 HS# Settings.
  3. Set “Enable Onhook on Cradle Reposition” to “Yes”. (By default, set to “No”).

Ending Calls

To terminate the calls, press the Hang-Up key .

On-Cradle Hang-up

Users can enable the On-Cradle Hang-up feature to automatically end ongoing calls after placing DP Handsets on its cradle.

To activate/deactivate the on-cradle hang-up feature:

• Using DP Handsets Menu
  1. Press Menu to bring up the operation menu.
  2. Select Preferences 🡪 and navigate to On-Cradle Hang-up using the up/down arrow keys.
  3. Switch between Enabled/Disabled using the left/right arrow keys and “Save” after Enabling / Disabling the option.

• Using DP75x Base Station Web Interface
  1. Access DP75x Base Station Web Interface.
  2. Go to DECT 🡪 Handsets Settings 🡪 HS# Settings.
  3. Set “Enable Off-hook on Cradle Pickup” to “Yes”. (By default, set to “No”).

Rejecting Calls

To reject an incoming call, press the Hang-Up key or “Reject” softkey (right softkey)

Direct IP Call

Direct IP calling allows two parties, that is, a handset and another VoIP device, to talk to each other in an ad hoc fashion without a SIP proxy.

Elements necessary to complete a Direct IP Call:

• Both DP Base station and other VoIP Devices, have public IP addresses, or
• Both DP Handsets and other VoIP Devices are on the same LAN using private IP addresses, or
• Both DP Handsets and other VoIP Devices can be connected through a router using public or private IP addresses (with necessary port forwarding or DMZ).

Users can perform IP calls using Star code following the below steps:

1. Pick up the handsets and press the Dial key

   

   .
2. Dial *47 followed by the target IP Address.

Examples of direct IP calls

1. If the target IP address is 192.168.0.160, the dialing convention is *47 then 192*168*0*160, followed by pressing the “#” key if it is configured as a send key or wait 4 seconds. In this case, the default destination port 5060 is used if no port is specified.
2. If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be: *47 or Voice Prompt with option 47, then 192*168*0*160*5062 followed by pressing the “#” key if it is configured as a send key or wait for 4 seconds.

Call Hold/Resume

During an established call, you can put the call on hold and resume the below steps:

1. Press the left softkey to access the call Options and then navigate to Hold.
2. Press “Select”, the left softkey to put the call on hold.
3. To resume the call, access the options menu again and navigate to Resume, then press Select.

Or you can press the softkey Hold to hold the call and Resume to resume it.

Call Waiting

This feature will notify you of a new incoming call during an established call and display the incoming call information visually on the LCD screen and a call waiting tone will be heard. If this feature is disabled, the new incoming call will be automatically rejected.

There are 2 ways to activate the call waiting feature either using the DP Handsets Menu or using DP Base Station Web Interface.

• Using DP Handsets Menu
  1. Press Menu to bring up the operation menu.
  2. Use arrow keys to reach Call Features

     

     🡪 navigate to Call waiting sub-menu.
  3. Select the account for which you want to enable the Call waiting feature, and then press the left softkey “Select”.
  4. Choose between Enabled and Disabled options and press the softkey “Save”, a prompt message will be displayed to confirm that the call waiting is enabled / disabled.
  5. During an established call, press

     

     (dial key) to put the first call on hold and answer the second incoming call. If no second incoming call, pressing

     

     will give the ability to initiate another call while the first one is on hold.

• Using DP75x Base Station Web Interface
  1. Access DP75x Base Station Web Interface.
  2. Go to DECT 🡪 Handsets Settings 🡪 HS# Settings.
  3. Set “Disable Call Waiting Tone” to “No”. (Default is No).
  4. Press the “Save and Apply” button to confirm.

Do Not Disturb

You can activate or deactivate the DND mode for your accounts registered on the handsets under the call settings. If DND mode is activated for a specific line, all incoming calls will receive busy treatment depending on your configuration (forward to voice mail, busy tone…)

To enable or disable the DND mode, follow the next steps

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Call Features

   

   🡪 navigate to the Do Not Disturb sub-menu.
3. Select the account on which you want to enable/disable the DND mode and then press “Select”
4. Choose between Enabled and Disabled options and press softkey “Save” to accept the changes, a prompt message will be displayed to confirm that the DND is enabled / disabled.

You can navigate to Status 🡪 Line status to check if the DND mode is enabled on the base station.

You can also navigate via the web interface of DP Base Station 🡪 Status 🡪 Line Options.

Call Forward

The call forward feature will allow you to forward all incoming calls to the desired number. Three possible call forward types are available on the DP Handsets.

• Forward all Dest: All incoming calls are immediately forwarded.
• Forward Busy Dest: Incoming calls are immediately forwarded if the line is busy.
• Forward No Answer Dest: Incoming calls are forwarded if not answered after a configured period of time.

To enable the call forward, please refer to the following steps:

1. Press Menu to bring up the operation menu.
2. Use arrow keys to reach Call Features

   

   🡪 navigate to the Call Forward sub-menu.
3. Select the account on which you want to enable/disable the call forward feature and press “Select”.
4. Select the type of call forwarding enter the number to forward the calls. For Forward No Answer, set “No Answer Timeout (s)“, which will determine how long the handset will keep ringing before the call is forwarded to the configured destination. (The valid range is 1 to 120 seconds, the default setting is 20)
5. Press “Save” (left softkey) to apply the settings, a prompt message will be displayed to confirm that the new settings have been saved successfully.

Paging

The DP Handsets support paging other handsets internally without having any sip Account registered. Similarly to the base station paging button, Inter-Handsets paging features enable handsets to ring other handsets. The feature can be enabled from the LCD menu 🡪 Call Features 🡪 paging.

Call Transfer

The DP Handsets support the Call Transfer feature, you can transfer a call to another party using one of the following ways:

• Blind transfer: Transfer a call directly to another party without consulting
• Attended transfer: Transfer a call with prior consulting.

Blind Transfer

1. Press the “Options” softkey during a call, and then select Blind Transfer, or press the softkey Transfer for DP Handset.

2. The initial call will be on hold, enter the number you want to transfer the call to.

3. Press the Dial key . The call is connected to the number or the handsets you specified, and the LCD screen prompts Call Transferred.

Attended Transfer

1. Press the Left softkey “Options” during a call, and then select Attended Transfer.

2. Enter the number you want to transfer the call to, then press the Dial key or press the Call Softkey.

3. Once the second call is established, press left softkey Transfer to finish the Attended transfer.

Transfer between handsets

The Call Transfers can also be done between handsets without a SIP account. The DP75x can transfer a call to another handset even if it has no SIP account registered.

Speed Dial

Speed dial allows users to perform single-digit dialing to predefined numbers. This feature is particularly useful to speed up dialing frequently used or hard-to-remember numbers. A maximum of 8 speed dial numbers is allowed.

For example, the digit key 2 is configured as a speed dial key and assigned the number 2000, the phone will dial out the number 2000 directly when you long press digit key 2.

• To assign the frequently used numbers as speed dial keys:

1. Press Menu to bring up the operation menu.
2. Access to Shortcut

   

   and then use the Arrow keys to reach the Speed Dial sub-menu.

Or;

Long press the representative number from 2 to 9 to set. (Note: The Speed dial number should not be already set on the chosen representative number, otherwise long press will initiate a call to the configured speed dial number).

1. Choose the digit key (2-9) to set and press Options or OK button. Three options will be available:

• Edit: To configure manually a contact as speed dial. Users need to enter “First Name”, “Last Name” and “Number”. (Note: First Name + Number or Last Name + Number are accepted).
• From Contacts: To set a contact from the phonebook directory to be a speed dial.
• To Modify a Speed Dial:

Repeat the above 2 steps.

In step 2, re-edit /re-assign a contact from the shared or private directory as a speed dial on the selected key.

• To Delete a Speed Dial:

Repeat the above 2 steps.

At step 2, select the Clear Entry option and press OK or Select to confirm.

3-Way Conference

The DP Handstes supports creating a local conference with other parties (including handsets starting the conference).

To start a 3-Way conference, follow the below steps:

1. Press the Dial key

   

   to place a call to the first party.
2. Press the left softkey “Options”, then select Conference.
3. Enter the second party number you want to add to the conference and press the Dial Key

   

   .

To drop the conference call, press or “End” softkey.

Voice Mail

The voice mail feature ensures that you will never miss any important messages. It permits either to leave voice mails to someone else or receive and listen to voice mails via the handsets

Set Voice Mail Feature Code

There are 2 ways to set the Voice Mail Feature Code, either using the DP Handsets Menu or using the DP75x Base Station Web Interface.

Note: The Voice Mail Feature Code depends on the service provider or IP-PBX used. For example, if UCM6xxx is the SIP server, the Voice Mail Feature Code is *97.

• Using DP Handsets Menu
  1. Press Menu (left softkey or the selection key) to bring up the operation menu.
  2. Access to Voice Mail

     

     and then select Set Voice Mail sub-menu.
  3. Select the account and enter the “VM Access Number”, then press the “Save” softkey.

• Using DP75x Base Station Web Interface
  1. Access DP75x Base Station Web Interface.
  2. Go to Accounts🡪 General settings.
  3. Configure Voice Mail Access Number.

Play Voice Mail Messages

1. Press “Menu” to bring up the operation menu.
2. Access to Voice Mail

   

   and then select the Play Message sub-menu.
3. Select the account to retrieve your voice messages saved on your voicemail.

Or;

Long press the digit “1” key to dial the configured Voice Mail feature code using Default Line.

Push to talk (PTT)

The DP Handsets support the push-to-talk (PTT) features which is a technology based on the instantaneous communication commonly employed in wireless cellular phone services using a button to switch the device from voice transmission mode to voice reception mode. This feature is similar to the “walkie-talkie” used and the PTT mode switches a phone from full duplex mode, where both parties can hear each other simultaneously, to half duplex mode, where only one party can speak at one time. Multiple parties to the conversation may also be included.

1. Users could press and hold the Push-to-talk key from any screen to quickly initiate a PTT call.

2. Available handsets (subscribed to the same base station) will receive the PTT call.

3. Keep holding the PTT key while speaking.
The channel status will change to Sending PTT to indicate that you are transmitting as displayed on the following screenshot.

To terminate PTT call, press button.

Configuration:

The PTT feature is always enabled on the base station, to use this feature, users need to enable the PTT on the handset at: Handset Menu → Preferences → PTT → set “Enabled”.

Also, to use PTT, the DP722 needs a dedicated button to push and then to talk, user can choose to use either LSK (Left Softkey) or RSK (Right Softkey) in Shortcuts settings. (If you forgot to enable the PTT, when you press the PTT softkey, it will redirect you to the setting to enable it before you can use it.)

Users can configure the “DECT PTT Silence Timer” on the Web UI at → DECT → General Settings. When a PTT call is established, any handset that enabled the PTT feature will automatically join the PTT call. if there is no one talking, after a certain time, the PTT call will be closed. This timeout setting is to determine how long the PTT call will be closed after being idle status. If set to 0, the timer will be disabled, and the PTT will remain forever until all parties exit the PTT call.

Call Features

The DP Handsets support traditional and advanced telephony features including caller ID, caller ID with caller Name, call forward, etc.

Call Features

RESTORE FACTORY DEFAULT SETTINGS

Please follow the instructions below to reset the phone:

1. Press the MENU button to bring up the keypad configuration menu;
2. Select Settings and enter;
3. Select System Settings 🡪 Factory Reset;
4. A warning window will pop out to make sure a reset is requested and confirmed;
5. Press the Yes softkey to confirm and the phone will reboot.
6. To cancel the Reset, press No softkey instead.

Users also can perform a factory reset using combo keys on DP Handsets during booting up before it is fully booted, to give DP Handsets the ability to recover from some extreme cases like self-reboot or stuck right after booted up.

Please refer to the following procedure for DP Handsets factory reset using the combo key:

1. Connect the USB cable and power off the DP Handsets.
2. Power on the DP Handset and wait for the Green LED.
3. Press 3 times Central Key (OK/Selection Key) quickly after the Green LED is on.
4. Press the Speaker Key (left bottom) first and then the Mute Key (right bottom) after the Red LED is on.
5. DP Handset LED will start blinking in 3 colors: Green, Red, and Orange if the factory reset successfully triggered.
6. Wait for about 1-3 minutes, the DP Handset will boot up with the setup wizard for initial language and date format settings.

CHANGE LOG

This section documents significant changes from previous versions of the user guide for DP735/DP730/DP722/DP725/DP720. Only major new features or major document updates are listed here. Minor updates for corrections or editing are not documented here.

Firmware Version 1.0.3.33

Product Name: DP720, DP722, DP725, DP730

• No major changes.

Firmware Version 1.0.3.25

Product Name: DP755

• No major changes.

Firmware Version 1.0.3.23

Product Name: DP755

• No major changes.

Firmware Version 1.0.21.33

Product Name: DP750, DP752, DP760

• No major changes.

Firmware Version 1.0.21.31

Product Name: DP750/DP752

• Added option to hide “Mute as DND” setting on the handset. [Mute as DND]
• Added call duration display in Call History. [Call History]

Firmware Version 1.0.3.21

Product Name: DP755

• No major changes.

Firmware Version 1.0.3.19

Product Name: DP755

• Added automatic clearing missed call indicator on parallel ringing handsets. [Call History]
• Added “Circular” to ringing mode or hunting groups. [Ringing Mode]
• Added “handset firmware downgrade not allowed” option. [DP Handsets Firmware Upgrade]

Firmware Version 1.0.21.25

Product Name: DP750/DP752

• Added the SN display on the handset. [Serial Number]
• Added “handset firmware downgrade not allowed” option. [DP Handsets Firmware Upgrade]
• Added option to have the phonebook display only the contact starting with the searched letter. [Contacts]

Firmware Version 1.0.3.16

Product Name: DP755

• Added ability to trigger base station subscription mode from GDMS. [Open Subscription through GDMS]
• Added “No answer timeout” feature in handset GUI. [No Answer Timeout (s)]
• Added the SN display on the handset. [Serial Number]

Firmware Version 1.0.21.19

Product Name: DP750/DP752

• Added ability to trigger base station subscription mode from GDMS. [Open Subscription through GDMS]

Firmware Version 1.0.21.17

Product Name: DP750/DP752

• No Major changes.

Firmware Version 1.0.3.14

Product Name: DP755

• No major changes

Firmware Version 1.0.21.16

Product Name: DP750/DP752

• Added option to see the frequency used by the handset. [System Monitoring]

Firmware Version 1.0.3.12

Product Name: DP755

• Added option to see the frequency used by the handset. [System Monitoring]

Firmware Version 1.0.21.15

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.3.11

Product Name: DP755

• No major changes.

Firmware Version 1.0.21.12

Product Name: DP750, DP752

• No major changes.

Firmware Version 1.0.3.8

Product Name: DP755

• Added support to increase the TX volume in handset mode. [Audio & Vibration]

Firmware Version 1.0.3.7

Product Name: DP755

• No major changes.

Firmware Version 1.0.3.4

Product Name: DP755

• Default ringtone changed to Ring 8. [Default Ringtone]
• Set “menu timeout” to be disabled by default. [Change Menu and LCD Timeout]
• Added ability to configure HTTP/HTTPS username and password from handset for provisioning. [Provision Auth]

Firmware Version 1.0.1.16

Product Name: DP755

• No major changes.

Firmware Version 1.0.1.15

Product Name: DP755

• Handset firmware can NOT downgrade to 1.0.19.15 or below. [Handset Firmware]

Firmware Version 1.0.1.13

Product Name: DP755

• This is the initial version.

Firmware Version 1.0.21.10

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.21.6

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.21.4

Product Name: DP752/DP750

• No Major changes

Firmware Version 1.0.21.2

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.19.8

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.19.6

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.19.5

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.19.4

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.19.3

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.19.2

Product Name: DP752/DP750

• Added option to use # as Redial key. [Redial key]

Firmware Version 1.0.17.8

Product Name: DP752/DP750

• No Major changes.

Firmware Version 1.0.17.4

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.17.3

Product Name: DP752/DP750

• Added ability to manage 3-way conference from handset. [3-way conference]

Firmware Version 1.0.17.1

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.15.15

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.15.6

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.15.3

Product Name: DP752/DP750

• No major changes

Firmware Version 1.0.15.2

Product Name: DP752/DP750

• Add support to input provisioning server username and password on handset UI when the base station is trying to download a config file from a password-protected server.
• Added support to delete a paired base station from the handset.

Firmware Version 1.0.13.8

Product Name: DP752/DP750

• Added support for handsets to internally page other handsets without accounts registered. [Paging][Call Features]
• Updated the CPE to 1.0.1.141 to better support GDMS.

Firmware Version 1.0.13.0

Product Name: DP752/DP750

• No major changes

Firmware Version 1.0.11.12

Product Name: DP752/DP750

• Added support for intercom feature without SIP account. [Intercommunication]
• Added support for transfer between HS internally without SIP. [Transfer between handsets]
• Add handset option for blind transfer and attended transfer. [Call Transfer]

Firmware Version 1.0.11.4

Product Name: DP752/DP750

• No major changes

Firmware Version 1.0.11.2

Product Name: DP752/DP750

• Added Chile time zone.

Firmware Version 1.0.9.9

Product Name: DP752/DP750

• No major changes.

Firmware Version 1.0.9.1

Product Name: DP752/DP750

• Added support for the Intercom feature. [Intercommunication]

Firmware Version 1.0.7.5

Product Name: DP752/DP750

• This is the initial version for DP752

Firmware Version 1.0.4.10

Product Name: DP750

• No major changes.

Firmware Version 1.0.4.7

Product Name: DP750

• Added the ability to display Account Name only. [SIP Account Display]
• Added SRTP icon on handset UI. [DECT handsets Icons Description]
• Updated German translations for both DP750 Web UI and DP720 handset UI.

Firmware Version 1.0.4.2

Product Name: DP750

• Added support for DP720 to use Audio Loopback test when it is not registered to the base station. [Audio loopback]
• Play keypad tone during the call if it is enabled. [Advisory Tones]

Firmware Version 1.0.3.40

Product Name: DP750

• Increased the number of digits that can be dialed on the handset (23 digits).

Firmware Version 1.0.3.37

Product Name: DP750

• No major changes

Firmware Version 1.0.3.31

Product Name: DP750

• Added language support for Slovakian, and Swedish. [Multi-language]

Firmware Version 1.0.3.23

Product Name: DP750

• Removed Tools/alarm menu from DP720 GUI, replaced by Status menu. [Status]
• Added keypad tones for non-DTMF keys on DP720.
• Added subscribe softkey in idle screen if HS is not subscribed on DP720.
• Added the ability to customize DP720 ringtones. [Ringtones Customization]
• Added DP720 walk-through setup wizard after factory reset. [Setup Wizard]
• Added support for more languages and updated translation.
• Added DP720 factory reset combo key to be able to recover the device during booting up. [DP720 factory reset using combo key]

Firmware Version 1.0.2.16

Product Name: DP750

• Re-arranged the Handset Menu Settings. [DP720 Handset Menu]
• Changed menu “Line Status” in Call Settings to “Lines”.
• Changed menu “Number” in set voice Mail to “VM Access Number”.
• Added headset detection and icon for DP720 dial mode screen. [DECT handsets Icons Description]
• Added ability to bridge conference before third-party answers. [3-Way Conference]
• Added ability to reboot from DP720 handset. [Reboot DP750 Base Station]
• Improved alarm snooze icon.
• Added DP720 LCD auto turn on feature when pickup from or repositioning to charger.
• Added + button support for keypad dialing. [DP720 Handset Description] [Make a Call using a Line]
• Improved support for Czech, Dutch, German, Hebrew, Japanese, Korean, and Turkish languages.

Firmware Version 1.0.1.14

Product Name: DP750

• Added snooze time settings for the alarm function.
• Added snooze icon.
• Updated alarm icon.
• Removed IVR (Interactive Voice Response).
• Added contact name to delete confirmation.
• Added use Line from Contacts when dialing out of the phonebook. [Dialing from Phonebook]
• Added VM, missed calls, and headset icon. [DP720 Icons Description]
• Removed the “Intercom” feature.
• Removed “Internal Call” from the audio ringtone menu.
• Adjusted Call History and Contacts menu architecture. [DP720 Handset Menu]
• Moved the “Edit Dial” option to the last one in the Call History and Contacts menu option. [Dialing from Call history] [Dialing from Phonebook]
• Hide empty fields when displaying contact info.
• Hide the icon after pressing the back key in the idle misses call or VM alert screen.
• Moved the “Standard ring” to the last one of the ringtone list. [Ringtones]
• Missed Calls can be dialed back via a related SIP profile using a softkey. [Dialing from Call history]

Firmware Version 1.0.1.4

Product Name: DP750

• Added Call and Delete softkeys during off-hook dial. [Placing calls]
• Added left softkey for Voice mail alert window to enter the Play Message window. [Play Voice Mail Messages]
• Added Display line name info immediately after off-hook. [Placing calls]
• Changed to only pressing the ESC key to show the factory menu.
• Added Dial number immediately after off-hook.
• Added Dialing GUI enhancements.
• Added ability to configure menu key timeout. [Change Menu and LCD Timeout]
• Added Handset will prompt “Saved successfully” if configuring call forward settings in the ring group.
• Added advisory tone for handset put in and out of the cradle.
• Added ability to configure menu key timeout.
• Added when last name is none use the first name for speed dial record name.
• Added when handset enters IVR, pressing RSK hold key will delete the dial number.
• Added stop dial tone if first key not number key after off hook

Firmware Version 1.0.0.16

Product Name: DP750

• This is the initial version for DP750/DP720.

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