Specifications

AT&T IP Flexible Reach Service

Nortel BCM200/400 (Release 4.0.2.03a) H.323 Configuration Guide

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Issue 1.9 Page 12 of 36

4.2 VOIP Gateway Trunks

Voice over IP (VoIP) lines, are signaling channels that simulate how CO lines

work. However, VoIP lines transmit data to the IP network over a LAN or IP

network rather than over physical lines. Once the VoIP trunks are set up, you

can assign them to line pools, and program their behavior in the same way you

would PRI lines.

VoIP trunks use line numbers 001 to 060. To view these line records select

Configuration --> Telephony --> Lines --> Active VoIP Lines. To access VoIP

lines, you need to enter software keycodes. Each keycode supports a specific

number of trunks. The H.323 trunks start numbering up from 001. No entries

appear in the Enabled VoIP lines field until you complete the IP Trunks Settings

field, which displays when you select IP Trunks under Configuration -->

Resources --> Telephony Resources --> IP trunks.

VoIP trunks should be configured to use a single line pool per VoIP trunk type.

Do not mix other trunk types on the same line pool. The VoIP line pools are

assigned to routes, which in turn, are configured with destination codes that

route calls to the AT&T IP Flex Reach network.

You can also create a fallback for the trunk. This is a situation where the system

reroutes the call to a PSTN line pool if the primary route is not available or the

call quality is not suitable. If you do not configure your network for fallback and

the call quality is below threshold, the IP call fails.