H.248 server-to-gateway Link Recovery

Last Updated : Apr 25, 2014 |
The H.248 link between an Avaya server running Communication Manager Software and the Avaya Gateway provides the signaling protocol for:

  • Call setup

  • Call control (user actions such as Hold, Conference, or Transfer) while the call is in progress

  • Call tear-down

If the link goes down, Link Recovery preserves any existing calls and attempts to re-establish the original link. If the gateway cannot reconnect to the original server, then Link Recovery automatically attempts to connect with another server or Survivable Remote Servers. Link Recovery does not diagnose or repair the network failure that caused the link outage.

Link Recovery begins with detection of either:

  • A TCP socket failure on the H.248 link

    or

  • Loss of the H.248 link within 40-60 seconds