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100 Avaya Application Solutions IP Telephony Deployment Guide
The left data rack contains a stack of five G650 Media Gateways that are labeled A through E.
The right data rack contains the following (from top to bottom):
● Two USB-compliant modems
● Two S8700-series Servers
● One Avaya Ethernet switch
● Two AS1 UPS units
S8700-series IP-PNC reliability configurations
The S8700-series Servers are duplicated. The control and IP-bearer links can also be
duplicated. The clock functionality is provided by the IPSI circuit pack in each port network. As
an all-IP solution, the S8700 IP-PNC only supports IP media gateways. The S8700 IP-PNC
does not support traditional CSS- or ATM-connected media gateways.
Starting with release 3.1 of Communication Manager, the capabilities of the TN2602AP IP
Media Resource 320 have been expanded to provide duplicated bearer support. This enables
customers to administer IP-PNC with critical bearer reliability. A port network continues to
support a maximum of two TN2602AP circuit packs but they can now be administered for
duplication, in addition to the previously offered load balanced support.