Grandstream

    Grandstream BLF Key Configuration

    The VoIP Help Page Team·2 min read·Last updated: March 14, 2026

    **Scope:**

    The following steps will allow you to configure BLF and Speed Dial keys on your Grandstream IP phone.

    Requirements:

    LAN access to your Grandstream IP phone

    1. 1
      e Keys > Virtual Multi-Purpose Keys
    2. 2
      The buttons for the phone will appear in numbered order going down the left side then down the right side. It is recommended to leave line 1 as it is used for registration
    3. 3
      On the key you wish to modify, select Edit VPK

    1. 1
      Enter the values described below:
      • Mode: Busy Lamp Field (BLF)
      • Accounts: Account 1
      • Description: Label you wish to appear on the screen (i.e. extension number)
      • Value: Extension number you wish to monitor (i.e. 201)

    Click Save

    1. 1
      Continue the process for as many BLF keys as you wish At the end of the list, you may press Add VPK to continue adding more.
    2. 2
      Once finished click Save VPK

    Virtual Multi-Purpose Key Types

    VPK ModeDescription
    LineUsed for active accounts. Typically used for the first button on the phone.
    Shared LineShares the same line across multiple phones
    Speed DialOpen line and dial specified digits using selected account
    Busy Lamp Field (BLF)Monitors presence of other extensions
    Presence WatcherFor future use
    Eventlist BLFFor future use
    Speed Dial via Active AccountOpen line via current active account and dial specified digits
    Dial DTMFSends DTMF key tone
    VoicemailDials voicemail (9901)
    Call ReturnRedials last dialed call
    TransferTransfers call to another extension or phone number
    Call ParkTransfer to parking lot
    Monitored Call ParkTransfer to monitored parking lot
    IntercomIntercom with selected extension
    LDAP SearchFor future use
    Multicast PagingPages specified group of extensions
    RecordEnables call recording from the phone
    Call LogOpens device call history
    MenuOpens device menu

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