Hardware Description and Reference for Avaya ... - Avaya Support

In the event that the G700, G350, or G250 Media Gateway can no longer communicate with the
S8400 Media Server, the LSP takes over all call processing functions for that gateway or
Multitech. However, the LSP does not take on any of the call processing functions for those
trunks and endpoints that are directly connected to the S8400 Media Server.
Connectivity
Ethernet connectivity with the TN8412AP/TN2312BP circuit pack
The S8400 Media Server supports connectivity with the TN8412AP (SIPI) /TN2312BP (IPSI-2)
circuit pack through a 10/100 BaseT Ethernet twisted pair on the IPSI-2 cable adapter.
Note:
Note: An S8400 system is shipped with a TN8412AP SIPI circuit pack. However, the
TN2312BP IPSI circuit pack is also compatible with S8400 systems.
This interface is for control only - no bearer traffic is carried over this connection. This Ethernet
is connected to the Communication Manager Processor complex. The IPSI-2 cable adapter is
mounted on the rear of the TN8412AP SIPI circuit pack.
The physical connection between the TN8412AP/TN2312BP and the S8400 circuit packs is
made by either:
1. Using an external crossover cable that directly interconnects the appropriate backplane
pins of the two circuit packs. The interface between the TN8400AP and the TN8412AP is by
a 10/100 Base T Ethernet crossover cable on the backplane connector. An RJ45 cable, that
plugs into the TN8400AP media server cable adapter ETH-A port and the TN8412APIPSI-2
adapter control port, provides the direction connection between the TN8400AP and the
TN8412AP.
2. Through the customer LAN connection.
Figure 9: IPSI-2 cable adapter on page 51 shows the IPSI-2 cable adapter for the TN8412AP
SIPI circuit pack.
50 Hardware Description and Reference for Avaya Communication Manager