Features Page 93 of 910
IP Line Description, Installation and Maintenance
ELAN subnet link is enabled (the CSA104 message is output on the Call
Server when this happens).
Example 4: Call Server warm start.
The voice and multimedia sessions survive. The Presence status is updated on
PCC as the converged IP Phone releases the call after the warm start.
Example 5: Call Server cold start.
The voice and multimedia sessions are closed as the Call Server comes up.
The Presence status becomes “Connected - Idle” even if the call is rebuilt and
active after the Call Server cold start.
IP Phone firmware downloads
The firmware is not downloaded to an IP Phone that has an active RTP stream
open when it registers with the failover system. The firmware is downloaded
later when the idle IP Phone registers again or by using appropriate CLI
commands.
IP Phone as ACD agent or supervisor telephone
If an IP Phone is used as an ACD agent (or supervisor) and the Call Server
fails, then:
• In the case of a Call Server warm start (INI), the active calls are retained
on the agent telephone.
• In the case of a Call Server cold start (SYSLOAD), the active calls are
dropped and the agents are logged out.
This applies to both the In-calls (PRIMARY) key and any secondary DN key
on the ACD telephone.
TPS failures do not impact general ACD functionality, since it is
implemented on the Call Server.
CS 1000 base features
No feature works when the active IP Phone is disconnected and trying to
reregister with the Call Server. All the features can be used in the context of