Example 7: Ess With Atm - Avaya ESS User Manual

ESS failover examples

Example 7: ESS with ATM

For Port Networks that do not have an IPSI but are controlled by the Main server(s) through
ATM connections, an ESS server similarly communicates indirectly through an IPSI controlled
Port Network, and then through an ATM connection (TN2305B or TN2306B ATM Expansion
Interface board).
In example 7 (see Figure 17), there is a single ESS server in an ATM configuration. The S8710
is the Main server with the S8500 Media Server as the ESS server. IPSIs are installed in all Port
Networks except for Port Network 2 and Port Network 5.
Issue 1.1 June 2005 47