Figure 6: Create A Vpk On Gxp2170; Figure 7: Blf Key - Grandstream Networks 3CX Configuration Manual

Figure 6: Create a VPK on GXP2170

4. To configure a Key as BLF for instance to monitor another extension on 3CX Phone System, set
Mode to Busy Lamp Field (BLF).

Figure 7: BLF Key

5. In Accounts dropdown list, select the account to use with this VPK.
6. In Description field, enter a name to be displayed for this key.
7. In Value field, enter the extension SIP user ID to monitor.
8. Click on Save and Apply to submit changes.
P a g e | 11
Configuring Grandstream Devices with 3CX Phone System