AT&T IP Flexible Reach Service
Nortel BCM50 Release 3.0 SIP Configuration Guide
3 Overview
This section provides a service overview of the Nortel Business Communication Manager 50 (BCM50) IP PBX integration with AT&T IP Flexible Reach service. For an overview of Nortel BCM 200/400 for IP Flexible Reach; please reference a separate document named “Nortel BCM 200/400 Configuration Guide.”
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Server |
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Call Control | Border | AT&T Managed | Circuit |
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Figure 1: AT&T IP Flexible Reach Network
The Nortel BCM50 customer premises site shall consist of the following components.
•Nortel IP 200x, 11xx, 12xx phones* – These phones use the Nortel proprietary UNIStim signaling protocol to communicate to the Nortel BCM50 IP PBX for call feature and routing support. These phones can be connected to a Nortel Ethernet switch (ES 470, ERS 5520, etc.) that supplies
•The following interfaces are provided on all three variants of the BCM50 main module:
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