Shared Line Appearance (SLA) feature helps users share SIP trunks. It also helps monitor the status of the shared line. SLA feature works with BLF key on IP phones.

  • When an incoming call is received, all the SLA stations are informed of it and may join it if the shared line allows to barge in.
  • When an outgoing call is made by one SLA station, all members shared with the same line are informed about the call, and will be blocked from this line appearance until the line goes back to idle or the call is put on hold.

To use SLA, you need to:

  1. Enable SLA feature on a VoIP trunk.
  2. Create SLA Stations.
  3. Configure BLF keys for the shared line on the stations' IP phones.

    The BLF key value is extension number_trunkname.