Grandstream: BLF Key Configuration
Table of Contents
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
-
e Keys > Virtual Multi-Purpose Keys
- 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
- On the key you wish to modify, select Edit VPK

- 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
- 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.
- Once finished click Save VPK
Virtual Multi-Purpose Key Types
| VPK Mode | Description |
|---|---|
| Line | Used for active accounts. Typically used for the first button on the phone. |
| Shared Line | Shares the same line across multiple phones |
| Speed Dial | Open line and dial specified digits using selected account |
| Busy Lamp Field (BLF) | Monitors presence of other extensions |
| Presence Watcher | For future use |
| Eventlist BLF | For future use |
| Speed Dial via Active Account | Open line via current active account and dial specified digits |
| Dial DTMF | Sends DTMF key tone |
| Voicemail | Dials voicemail (9901) |
| Call Return | Redials last dialed call |
| Transfer | Transfers call to another extension or phone number |
| Call Park | Transfer to parking lot |
| Monitored Call Park | Transfer to monitored parking lot |
| Intercom | Intercom with selected extension |
| LDAP Search | For future use |
| Multicast Paging | Pages specified group of extensions |
| Record | Enables call recording from the phone |
| Call Log | Opens device call history |
| Menu | Opens device menu |