When switching external SIP connections, the Call Router in the LANCOM VoIP Router generally manages the connection for the full duration of the call. This means that the Call Router retains control over a call even when two external subscribers have been connected to one another and the local subscriber on the LANCOM VoIP Router side has ended the call. In this case, the LANCOM VoIP Router takes up bandwidth for connecting the two external subscribers.
If the connections to the two external subscribers both run via the same SIP provider, an alternative is available whereby call switching is transferred to the provider. The LANCOM VoIP Router no longer takes up the bandwidth.
LANconfig: VoIP-Call-Manager / Lines / SIP lines
WEBconfig: Setup / Voice-Call-Manager / Lines / SIP-Provider / Lines
- Activate switching at provider (Refer-forwarding)
With this option activated, a REFER is forwarded to the provider when
two external lines are connected, and the provider then handles the call
transfer. The advantage of this is that the LANCOM VoIP Router
no longer requires the bandwidth.
- Possible values: On, off
- Default: Off
Note: Switching at the provider will only work if both connections are routed via the same provider line.