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Overview
How is this chapter organized
This chapter provides a high-level overview of the interworking between the Multimedia Communications Platform (MCP) and the following systems:
•Primary Rate Interface (PRI)-enabled switches
•SIP-T-based switches
•third-party gateways
•traditional phones
•third-party voicemail servers
Interworking with PRI-enabled switches
The MCP uses the SIP PRI Gateway to perform interworking with PRI-enabled switches (switches with PRI interfaces).
For more detailed information about the SIP PRI Gateway, please refer to the MCP SIP PRI Gateway Basics document.
Functional description
The SIP PRI Gateway is a signaling and media gateway that interconnects a SIP-based Voice over IP (VoIP) domain and a system that uses ISDN Primary Rate Interface (PRI/Q.931).
A PRI-enabled system can be a switch that works on the Public-Switched Telephone Network (PSTN) or Private Branch Exchange (PBX). The Nortel Networks DMS-100 and the Nortel Networks Meridian SL-100 are examples of PRI-enabled switches.
The SIP PRI Gateway’s primary function is to convert the packet-based voice streams of the VoIP system to circuit-based voice streams of the PRI-enabled system.
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