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.
