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Call processing
144 Avaya Application Solutions IP Telephony Deployment Guide
Multi-home multi-Communication Manager with QSIG (TIE trunk)
connection
connection
An alternative to the single Communication Manager configuration is to have one logical
Communication Manager system, but have two Communication Manager servers connected
with QSIG or standard Communication Manager TIE trunk connection using ISDN or IP trunks.
This increases the total capacity of the solution and retains the optimization of having only one
Communication Manager system with multiple SES home servers. Customers with existing
systems of Communication Manager servers would likely have the QSIG infrastructure already
in place before they upgrade to SIP.
Communication Manager system, but have two Communication Manager servers connected
with QSIG or standard Communication Manager TIE trunk connection using ISDN or IP trunks.
This increases the total capacity of the solution and retains the optimization of having only one
Communication Manager system with multiple SES home servers. Customers with existing
systems of Communication Manager servers would likely have the QSIG infrastructure already
in place before they upgrade to SIP.
Figure 54: Multi-home multi-Communication Manager configuration with QSIG connection