Instruction manual

Issue 4 May 2003 165555-233-767

Reliability and survivability

Alternate gatekeeper

The alternate gatekeeper enhancement can provide survivability between Avaya™

Communication Manager and IP communications devices such as IP Telephones

and IP softphones. This is accomplished by providing alternate gatekeepers

(C-LAN) in the event of network or gatekeeper failure and by load balancing

endpoint traffic among multiple gatekeepers. It is important to recognize that calls

will drop during that interval while the communication is re-established to the

switch.

ATM WAN spare processor (WSP)

See ‘‘WAN Spare Processor (WSP)’’ on page 123.

Local Survivable Processor (LSP)

A Local Survivable Processor (LSP) is an Internal Call Controller (ICC) with an

integral G700 Media Gateway, in which the ICC is administered to behave as a

spare processor rather than as the main processor. The standby Avaya S8700

Media Server runs in duplex mode with the main server ready to take control in

the event of a outage — with no loss of communication.