Avaya Business Communications Manager 5.0 - Planning and Engineering User Manual Page 186

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186 VoIP trunk gateways
Nortel Business Communications Manager 5.0
Planning and Engineering
NN40170-200 01.03 Standard
August 2009
Copyright © 2009 Nortel Networks
Figure 37 Internal call from Meridian 1 tandems to remote PSTN line
Since the VoIP trunks are configured into line pools, you can assign line pool
codes to users who have been assigned access to the VoIP trunks. However,
if you intend to set up your system to use fallback, so that calls can go out over
PSTN if the VoIP trunks are not available, you must use routes and destination
codes to access the VoIP trunk line pools.
Prerequisites for VoIP trunk gateway configuration
Ensure that you have obtained the following information or familiarize yourself
with the requirements before continuing with VoIP trunk configuration:
Keycodes: Obtain and install the necessary keycodes for the number of
VoIP trunks you want to support on the system. For more information
about installing the keycodes, see the Keycode Installation Guide
(NN40010-301). Talk to your BCM sales agent if you need to purchase
VoIP keycodes.
Each keycode adds a specific number of VoIP trunks. You must reboot
your BCM after you enter VoIP keycodes to activate trunking.
FEPS (Functional Endpoint Proxy Server), the VoIP Gateway service,
restarts automatically after you enter the VoIP keycodes.
H.323 network applications considerations
If your network uses a gatekeeper (H.323 trunks only), specific settings
are available to configure on your system to recognize the gatekeeper.
Additional settings are available within the gatekeeper application to
configure VoIP lines. For more information, see VoIP interoperability—
gatekeeper configuration (page 201)“. If a gatekeeper exists on the
network, you need not configure remote gateway settings. For more
information about audio stream ports, see Scope of optional VoIP trunk
Head office
VoIP trunk
(with MCDN, optional)
Node B
Calgary
Node C
Ottawa
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