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Interoperation Configuration Guide

AR Router

This document provides cases for connecting AR enterprise routers to devices of other vendors.
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The PBX supports three types of SIP trunk groups: SIP AT0, SIP PRA, and SIP IP. A SIP IP trunk uses SIP based on IP. A SIP IP trunk group implements voice communication between PBX users and inter-office users.

The PBX at one end of a SIP IP trunk does not need to register with the device at the other end because the relationship between the two ends is equivalence relationship. Unlike a circuit trunk that defines a physical channel, a SIP IP trunk defines a logical channel and solves authentication and addressing problems between local and remote offices. When you configure a SIP IP trunk for a PBX, the remote end must support the SIP IP trunk, as shown in Figure 12-1.

Figure 12-1  Networking of SIP IP trunk groups
Updated: 2019-05-17

Document ID: EDOC1100034005

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