Mid-market to large enterprise

IP Server Interface (TN2312BP) - The IP Server Interface (IPSI) is the communication interface between the server and the Media Gateways (port networks). The IPSI is responsible for gateway control, and for tunneling call control messages back to the S8700.

One IPSI circuit pack is required per IPSI-connected Media Gateway for standard reliability. Duplicated IPSI circuit packs are required per IPSI-connected Media Gateway for high reliability and critical reliability.

The IPSI is located in the tone/clock slots, and provides the following functions:

PKTINT packet bus interface

Archangel TDM bus interface

Tone/Clock functionality found on the TN2182B Tone/Clock circuit pack

Ethernet interface for technician access

Ethernet interface for connectivity to Services laptop computers

Maintenance board interface for communication with the EPN maintenance board

Each IPSI typically controls up to five gateways by tunneling control messages over the center stage (TDM) network to the PNs that do not have IPSIs. For locations with high IP Telephone traffic, Avaya recommends a greater number of IPSI circuit packs.

An IPSI cannot be placed in:

A PN that has a Stratum-3 clock interface

A remote PN that uses a DS1 converter

A Survivable Remote Expansion Port Network (SREPN) The IPSI supports the following functions:

Supports eight global Call Classification ports

Supports network diagnostic capabilities

Provides PN clock generation and synchronization for Stratum-4 type II only

Provides PN tone generation

Provides distributed PN packet interface

Supports the download of IPSI firmware

Provides serial number support for License File feature activation

Control LAN (TN799DP) - The TN799DP Control LAN (C-LAN) circuit pack acts as front-end processor and concentrator and provides the gateway between the public IP Telephony network and the S8700-system. All H.323 signaling messages between IP Telephony endpoints and the S8700-series Servers must pass through the C-LAN. The connectivity path between the IP endpoint and the server is as follows:

Endpoint IP Network C-LAN PN backplane IPSI IP network S8700

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Avaya 555-245-600 manual Mid-market to large enterprise