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  5. GRP26xx - VPK (Virtual Multi-Purpose Keys) Guide

GRP26xx - VPK (Virtual Multi-Purpose Keys) Guide

  • Updated on June 2, 2022

Grandstream GRP26XX Carrier-Grade IP phones support the VPK (“Virtual Multi-Purpose Keys”) feature to add more flexibility and provide better user experience using Multi-Purpose Keys modes.

With the VPK feature design, line keys can be assigned with multiple functions. Users have also the ability to add more VPKs which will be displayed on different screens. The screens are dynamically added to match the extra VPKs, and incrementally indexed on the top of the main screen (1 to 4) until reaching the maximum number of supported VPKs.

Using VPK, users will be able to monitor extensions, use speed dial numbers, send DTMF during calls and more from their phone screens directly; switching between screens will show configured VPK and bring more flexibility to user’s experience.

If using standard MPK on a GRP2613 IP phone, for instance, which supports 6-line keys, customers can use 1 LINE key for the main SIP accounts and the 5 others (not including built-in MPKs) can be used for monitoring/speed dial or any other available features using that account. While using VPK feature on the same GRP2613, customers can configure the same LINE key with up to 4 features virtually mapped on different screens, as an example, Line 1 key can be configured as LINE on the first screen, Speed Dial on screen 2, BLF on screen 3 and Call Park on screen 4.

Below screenshot shows the 3rd screen page of the GRP2613.

Figure 1: VPK Pages

Fixed and Dynamic VPK

Fixed VPK

Fixed VPKs are the hard line keys on each phone model; their default mode is “Line” and support all other modes (BLF, Speed Dial…).

Each phone model has a specific number of hard line keys limiting the number of supported Fixed VPK. For example, GRP2613 has 6 Line keys allowing to support 6 Fixed VPKs.

Dynamic VPK

Dynamic VPK are virtual keys that can be added by users.

Each phone model has a specific number of allowed Dynamic VPK, depending on number of hard line keys and screens. For instance, GRP2613 has 6 hard keys, number of supported VPKs (Fixed and Dynamic) is 24 VPK = 6 (Fixed VPK) x 4 (screens), available Dynamic VPKs is 18 VPK = 24 VPK – 6 hard keys.

The screens are dynamically added to match the extra VPKs, and incrementally indexed on the top of the main screen (1 to 4) until reaching the maximum number of supported VPKs.

Dynamic VPKs support all available modes (BLF, Speed Dial, Call Park, transfer…) except LINE, Shared Line and NONE modes.

Fixed/Dynamic VPK per Phone Model

The table below shows how many Fixed/Dynamic VPKs each GRP model support.

GRP2612(P/W)

GRP2613

GRP2614

GRP2615

GRP2616

GRP2604(P)

GRP2624

GRP2634

Fixed VPK

4

6

4

10

6

6

8

8

Dynamic VPK

12

18

12

30

18

6

24

24

Total VPK

16

24

16

40

24

12

32

32

Table 1: Fixed/Dynamic VPK per Phone Model for GRP26xx

Even if a fixed VPK has mode set to “None”, the number of allowed Dynamic VPKs will not change.

VPK Configuration

To configure/add/edit or delete VPK, follow below steps:

  1. Access Web GUI of GRP phone.
  2. Go to Settings 🡪 Programmable Keys 🡪 Virtual Multi-Purpose Keys.
Figure 2: Virtual Multi-Purpose Keys page

  1. Configure Fixed or Dynamic VPKs as follows:
  1. Fixed VPK:
    • Press Edit VPK button
    • Select mode to use from Mode dropdown list.
    • Select Account# from Accounts dropdown list.
    • Enter a description text in Description field (optional).
    • Enter the value sequence for each mode in Value field if required.
    • Press Save button to save your configuration (Reset button allows to reset all fields to default values).
    • Press Save VPK to apply changes to VPK.

Fixed VPKs can only be edited. Adding or deleting Fixed VPK is not allowed.

Figure 3: Fixed VPK – Edit

Example:

Customer’s GRP2613 has a SIP account registered on Account 1 and needs to monitor extension 1000.

Below values needs to be used:

  • Mode: Busy Lamp Field (BLF)
  • Accounts: Account 1 (selected)
  • Description: BLF_1000 (optional)
  • Value: 1000
  1. Dynamic VPK
    • Press Add VPK to create a new Dynamic VPK.
Figure 4: Add VPK

  • Select mode to use from Mode dropdown list.
  • Select Account# from Accounts dropdown list.
  • Enter a description text in Description field (optional).
  • Enter the value sequence for each mode in Value field if required.
  • Press Save button to save your configuration (Reset button allows to reset the VPK to default value).
  • Press Save VPK to apply changes to VPK.

Once added and saved, Edit VPK and Delete VPK buttons will appear. Customers can press Edit VPK button to edit or Delete VPK to remove selected VPK.

Figure 5: Dynamic VPK

Example:

Customer’s GRP2613 has a SIP account registered on Account 1 and wants to add a Speed Dial for extension 1001.

Below values needs to be used:

  • Mode: Speed Dial
  • Accounts: Account 1 (selected)
  • Description: SP_1001 (optional)
  • Value: 1001

On GRP2604(P) Only :

To configure/add/edit or delete VPK, follow below steps:

  1. Access Web GUI of GRP2604 phone.
  2. Go to Programmable Keys 🡪 Virtual Multi-Purpose Keys.
Graphical user interface

Description automatically generated
Figure 6: Virtual Multi-Purpose Keys page on GRP2604(P)

  1. Configure Fixed or Dynamic VPKs as follow:
  1. Fixed VPK
    • Select mode to use from Mode dropdown list.
    • Select Account# from Accounts dropdown list.
    • Enter the value sequence for each mode in Value field if required.
    • Enter the name to be associated with the MPK in Label field.
    • Press Save button to save your configuration (Reset button allows to reset all fields to default values).
    • Press Save VPK to apply changes to VPK.

Fixed VPKs can only be edited. Adding or deleting Fixed VPK is not allowed. Information

Graphical user interface

Description automatically generated
Figure 7: Fixed VPK – Edit on GRP2604(P)

Example:

Customer’s GRP2604(P) has a SIP account registered on Account 1 and needs to monitor extension 3000.

Below values needs to be used:

  • Mode: Busy Lamp Field (BLF)
  • Accounts: Account 1 (selected)
  • Value: 3000
  • Label: Alex (optional)
  1. Dynamic VPK
    • Press Add VPK to create a new Dynamic VPK.
Figure 8: Add VPK on GRP2604(P)

  • Select mode to use from Mode dropdown list.
  • Select Account# from Accounts dropdown list.
  • Enter the value sequence for each mode in Value field if required.
  • Enter the name to be associated with the MPK in Label field.
  • Press Save button to save your configuration (Reset button allows to reset all fields to default values).
  • Press Save VPK to apply changes to VPK.

Customers can Edit VPK button or Delete VPK.

Graphical user interface, application

Description automatically generated
Figure 9: Dynamic VPK

Example:

Customer’s GRP2604 has a SIP account registered on Account 1 and wants to add a Speed Dial for extension 3001.

Below values needs to be used:

  • Mode: Speed Dial
  • Accounts: Account 1 (selected)
  • Value: 3001
  • Label: Diego (optional)

VPK Modes and Indication for GRP26XX

Fixed VPK support all available modes (32 modes), while Dynamic VPK doesn’t support Default, Shared and None modes (30 modes). The following table provides a description of each mode as well as state, icon, and LED status.

VPK ModeDescriptionStateIconLED Status

Speed Dial

Speed Dial mode allows to set a key for one touch dialing; configured number will be dialed once VPK is pressed.

Select the Account to dial from and enter the Speed Dial number to be dialed in the Value field or enter the IP address to set the Direct IP call as Speed Dial.

Account Unregistered

OFF

Account Registered

ON

Busy Lamp Field (BLF)

Busy Lamp Field (BLF) mode allows to monitor status (available, ringing, busy) of an extension.

Select the Account to monitor the BLF status. Enter the extension number in the Value field to be monitored.

Offline, Unknown

OFF

Terminated

GREEN

Ringing (Early)

Flashing RED

Trying

Flashing RED

Confirmed

RED

Speed Dial Via Active Account

Speed Dial via active account mode allows to set a key for one touch dialing; configured number will be dialed once VPK is pressed using specified account if available, otherwise, first available account will be used to dial out.

Select the Account to dial from and enter the Speed Dial number to be dialed in the Value field or enter the IP address to set the Direct IP call as Speed Dial.

No state changes

OFF

Dial DTMF

Dial DTMF allows customers to send digits while in communication, for instance, when dialing to an IVR, users can set Dial DTMF Key to send digits to the IVR.

Enter a series of DTMF digits in the Value field to be dialed during the call.

No state changes

OFF

Voice Mail

Allows access to user’s voice mail by pressing configured VPK.

Select Account and enter the Voice Mail access number in the Value field.

Account not registered

OFF

Account Registered

(No new voice mail)

OFF

Account Registered

(voice mail available)

OFF

Call Return

Allows users to dial last answered call by pressing configured VPK.

The Value field should be left blank.

This option is not binding to the account and the call will be returned based on the account with the last answered call.

No state changes

OFF

Transfer

Allows to set a destination number to transfer calls to it (blind transfer) by pressing configured VPK.

Select Account, and enter the number in the Value field to be transferred during the call.

Account Unregistered

OFF

Account Registered

OFF

Call Park

This feature allows to park/pick up the call, and can be also used to monitor parking lots via VPK button’s LED.

Select Account, and enter the call park extension in the Value field to park/pick up the call.

Notes:

  • If Value field has leading star code like *xx, the phone will not send SUBSCRIBE to the server, and VPK will be used to only park/retrieve calls;
  • If Value field is set with parking lots (for example: 701, 702…), VPK will be used as Monitored Call Park; the phone will send SUBSCRIBE to monitor configured parking lots and park/retrieve calls.

Account Unregistered

OFF

Account Registered

OFF

Intercom

Allows to set a VPK as intercom button to a specific destination with auto-answer instruction.

When the call is initiated, SIP INVITE sent towards destination extension (via SIP server) will include Alert-info header with Auto-answer=0 parameter.

Select Account, and enter the extension number in the Value field to do the intercom.

Account Unregistered

OFF

Account Registered

OFF

LDAP Search

This option is to narrow the LDAP search scope.

  • Enter the LDAP search base in the Description field. It could be the same or different from the Base in LDAP configuration under Advanced Settings. The Base in LDAP configuration will be used if the Description field is left blank.
  • Enter the LDAP Name/Number filter in the Value field.

For example: If users set VPK as “LDAP Search” for “Account 1”, and set filters:

Description -> ou=video,ou=SZ,dc=grandstream,dc=com Value -> sn=Li

Since the Base for LDAP server configuration is “dc=grandstream,dc=com”, “ou=video,ou=SZ” is added to narrow the LDAP search scope. “sn=Li” is the example to filter the last name.

No State

OFF

Multicast Paging

Multicast paging is a feature that allows the user to make calls to a group of phones listening to the same Paging IP address.

Multicast paging calls will be automatically answered on listening phones and conversation will be in one-way audio path (originator can speak, while listening phones will be able to hear only).

Enter Line key description in Description field and multicast sending address in Value field.

No State

OFF

Record

Allows users to record ongoing calls. Recording needs to be supported on the server to use this feature.

Idle

OFF

Recording

OFF

Call Log

This Key is a shortcut to Call History.

No state

OFF

Menu

This Key is a shortcut to the Menu button.

No state

OFF

Information

Select this feature in order to display the Information popup to show the firmware version, MAC address, IP address and IP Settings from the MPK buttons.

No state

OFF

Presence Watcher

Presence watcher allows to monitor presence / registration status of an extension. this feature needs to be supported by SIP server to use it.

Select the Account to monitor the presence status. Enter the extension number in the Value field to be monitored.

Offline, Unknown

OFF

Available

GREEN

Monitored Call Park

This feature allows to park/pick up the call, and monitor the parked call via VPK button’s LED.

Select account from Account field, and enter the call park extension in the Value field.

Note: The phone sends SUBSCRIBE to the server to retrieve status of monitored parking lot.

Offline, Unknown

OFF

Available

GREEN

Call Parked

Flashing RED

Eventlist BLF

Eventlist BLF allows to monitor a list of extension similar to BLF, administrator needs to configure Eventlist BLF on server side and provide Eventlist BLF URI on the phone.

Select the Account to monitor the Eventlist BLF status. Enter the extension number in the Value field to be monitored and make sure to specify “Eventlist BLF URI” (Account X 🡪 SIP Settings 🡪 Advanced Features).

Offline, Unknown

OFF

Terminated

GREEN

Ringing (Early)

Flashing RED

Trying

Flashing RED

Confirmed

RED

Default

Regular line key to open up a line and switch line.

The Description and Value fields can be left blank.

Note: Default mode is supported on Fixed VPK only.

Unregistered

(No IM, Voice mail, No Call Forward)

OFF

Registered + Idle

(No IM, Voice mail, No Call Forward)

OFF

Registered + IM + Voice mail

OFF

Registered + Voice Mail (No IM)

OFF

Unregistered + Call Forward All

(No IM, No Voice Mail)

OFF

Registered + Call Forward All

(No IM, No Voice Mail)

OFF

Unregistered + Call Forward Delay + Call Forward Busy

(No IM, No Voice Mail)

OFF

Registered + Call Forward Delay + Call Forward Busy

(No IM, No Voice Mail)

OFF

Unregistered + Call Forward Delay

(No IM, No Voice Mail, No Call Forward Busy)

OFF

Registered + Call Forward Delay

(No IM, No Voice Mail, No Call Forward Busy)

OFF

Unregistered + Call Forward Busy

(No IM, No Voice Mail, No Call Forward Delay)

OFF

Registered + Call Forward Busy

(No IM, No Voice Mail, No Call Forward Delay)

OFF

Registered + Ringing

Flashing RED

Registered + On Hold

Flashing GREEN

Registered + Connected + Incoming Call

GREEN

Registered + Connected + Outgoing Call

GREEN

Shared Line

Share line for Shared Line Appearance feature. Select the Account registered as Shared line for the line key.

The Description and Value fields can be left blank.

Note: You may refer to this guide for more detail about Shared Line configuration: BS_SCA_conf_Guide

Unregistered

OFF

Registered + Idle

OFF

Table 2: VPK Modes and Indications for the GRP26xx ( Except GRP2604(P))

VPK ModeDescriptionStateIconLED Status

Speed Dial

Speed Dial mode allows to set a key for one touch dialing; configured number will be dialed once VPK is pressed.

Select the Account to dial from and enter the Speed Dial number to be dialed in the Value field or enter the IP address to set the Direct IP call as Speed Dial.

Account Unregistered

OFF

Account Registered

ON

Busy Lamp Field (BLF)

Busy Lamp Field (BLF) mode allows to monitor status (available, ringing, busy) of an extension.

Select the Account to monitor the BLF status. Enter the extension number in the Value field to be monitored.

Offline, Unknown

OFF

Terminated

GREEN

Ringing (Early)

Flashing RED

Trying

Flashing RED

Confirmed

RED

Speed Dial Via Active Account

Speed Dial via active account mode allows to set a key for one touch dialing; configured number will be dialed once VPK is pressed using specified account if available, otherwise, first available account will be used to dial out.

Select the Account to dial from and enter the Speed Dial number to be dialed in the Value field or enter the IP address to set the Direct IP call as Speed Dial.

No state changes

OFF

Dial DTMF

Dial DTMF allows customers to send digits while in communication, for instance, when dialing to an IVR, users can set Dial DTMF Key to send digits to the IVR.

Enter a series of DTMF digits in the Value field to be dialed during the call.

No state changes

OFF

Voice Mail

Allows access to user’s voice mail by pressing configured VPK.

Select Account and enter the Voice Mail access number in the Value field.

Account not registered

OFF

Account Registered

(No new voice mail)

OFF

Account Registered

(voice mail available)

OFF

Call Return

Allows users to dial last answered call by pressing configured VPK.

The Value field should be left blank.

This option is not binding to the account and the call will be returned based on the account with the last answered call.

No state changes

OFF

Transfer

Allows to set a destination number to transfer calls to it (blind transfer) by pressing configured VPK.

Select Account, and enter the number in the Value field to be transferred during the call.

Account Unregistered

OFF

Account Registered

OFF

Call Park

This feature allows to park/pick up the call, and can be also used to monitor parking lots via VPK button’s LED.

Select Account, and enter the call park extension in the Value field to park/pick up the call.

Notes:

  • If Value field has leading star code like *xx, the phone will not send SUBSCRIBE to the server, and VPK will be used to only park/retrieve calls;
  • If Value field is set with parking lots (for example: 701, 702…), VPK will be used as Monitored Call Park; the phone will send SUBSCRIBE to monitor configured parking lots and park/retrieve calls.

Account Unregistered

OFF

Account Registered

OFF

Intercom

Allows to set a VPK as intercom button to a specific destination with auto-answer instruction.

When the call is initiated, SIP INVITE sent towards destination extension (via SIP server) will include Alert-info header with Auto-answer=0 parameter.

Select Account and enter the extension number in the Value field to do the intercom.

Account Unregistered

OFF

Account Registered

OFF

LDAP Search

This option is to narrow the LDAP search scope.

  • Enter the LDAP search base in the Description field. It could be the same or different from the Base in LDAP configuration under Advanced Settings. The Base in LDAP configuration will be used if the Description field is left blank.
  • Enter the LDAP Name/Number filter in the Value field.

For example: If users set VPK as “LDAP Search” for “Account 1”, and set filters:

Description -> ou=video,ou=SZ,dc=grandstream,dc=com Value -> sn=Li

Since the Base for LDAP server configuration is “dc=grandstream,dc=com”, “ou=video,ou=SZ” is added to narrow the LDAP search scope. “sn=Li” is the example to filter the last name.

No State

OFF

Multicast Paging

Multicast paging is a feature that allows the user to make calls to a group of phones listening to the same Paging IP address.

Multicast paging calls will be automatically answered on listening phones and conversation will be in one-way audio path (originator can speak, while listening phones will be able to hear only).

Enter Line key description in Description field and multicast sending address in Value field.

No State

OFF

Record

Allows users to record ongoing calls. Recording needs to be supported on the server to use this feature.

Idle

OFF

Recording

OFF

Call Log

This Key is a shortcut to Call History.

No state

OFF

Menu

This Key is a shortcut to the Menu button.

No state

OFF

Information

Select this feature in order to display the Information popup to show the firmware version, MAC address, IP address and IP Settings from the MPK buttons.

No state

OFF

Presence Watcher

Presence watcher allows to monitor presence / registration status of an extension. this feature needs to be supported by SIP server to use it.

Select the Account to monitor the presence status. Enter the extension number in the Value field to be monitored.

Offline, Unknown

OFF

Available

GREEN

Monitored Call Park

This feature allows to park/pick up the call, and monitor the parked call via VPK button’s LED.

Select account from Account field, and enter the call park extension in the Value field.

Note: The phone sends SUBSCRIBE to the server to retrieve status of monitored parking lot.

Offline, Unknown

OFF

Available

GREEN

Call Parked

Flashing RED

Eventlist BLF

Eventlist BLF allows to monitor a list of extension similar to BLF, administrator needs to configure Eventlist BLF on server side and provide Eventlist BLF URI on the phone.

Select the Account to monitor the Eventlist BLF status. Enter the extension number in the Value field to be monitored and make sure to specify “Eventlist BLF URI” (Account X 🡪 SIP Settings 🡪 Advanced Features).

Offline, Unknown

OFF

Terminated

GREEN

Ringing (Early)

Flashing RED

Trying

Flashing RED

Confirmed

RED

Default

Regular line key to open up a line and switch line.

The Description and Value fields can be left blank.

Note: Default mode is supported on Fixed VPK only.

Unregistered

(No IM, Voice mail, No Call Forward)

OFF

Registered + Idle

(No IM, Voice mail, No Call Forward)

OFF

Registered + IM + Voice mail

OFF

Registered + Voice Mail (No IM)

OFF

Unregistered + Call Forward All

(No IM, No Voice Mail)

OFF

Registered + Call Forward All

(No IM, No Voice Mail)

OFF

Unregistered + Call Forward Delay + Call Forward Busy

(No IM, No Voice Mail)

OFF

Registered + Call Forward Delay + Call Forward Busy

(No IM, No Voice Mail)

OFF

Unregistered + Call Forward Delay

(No IM, No Voice Mail, No Call Forward Busy)

OFF

Registered + Call Forward Delay

(No IM, No Voice Mail, No Call Forward Busy)

OFF

Unregistered + Call Forward Busy

(No IM, No Voice Mail, No Call Forward Delay)

OFF

Registered + Call Forward Busy

(No IM, No Voice Mail, No Call Forward Delay)

OFF

Registered + Ringing

Flashing RED

Registered + On Hold

Flashing GREEN

Registered + Connected + Incoming Call

GREEN

Registered + Connected + Outgoing Call

GREEN

Shared Line

Share line for Shared Line Appearance feature. Select the Account registered as Shared line for the line key.

The Description and Value fields can be left blank.

Note: You may refer to this guide for more detail about Shared Line configuration: BS_SCA_conf_Guide

Unregistered

OFF

Registered + Idle

OFF

Table 3: VPK Modes and Indications for the GRP2604(P)

Screen Examples for GRP2613 and GRP2604

The following screenshots show the GRP2613 screen’s first two pages:

Figure 10: Screen Example – Page 1

Figure 11: Screen Example – Page 2

The following screenshots show the GRP2604(P) screen’s pages (1, 3 and 4):

Figure 12: Screen Example – Page 1 ( GRP2604P )

Figure 13: Screen Example – Page 3 ( GRP2604P )

A picture containing graphical user interface

Description automatically generated
Figure 14: Screen Example – Page 4 ( GRP2604P)

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