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86 Chapter 5 Configuring local VoIP trunks

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You cannot program DISA for voice over IP (VoIP) trunks, therefore, you cannot use COS

passwords to remotely access features over your system. The exception to this would be a

tandemned call, where a call comes into system A over the PSTN, then tandems to system B

over an VoIP trunk. In this case, the remote access package set up for the COS password will

determine which system features are available to the caller.

Pre-installation system requirements

Ensure that you have obtained the following information or familiarize yourself with the

requirements before continuing with VoIP trunk configuration:

Keycodes

Before you can use VoIP, you must obtain and install the necessary keycodes. See the Keycode

Installation Guide for more information about installing the keycodes. Talk to your Business

Communications Manager sales agent if you need to purchase VoIP keycodes.

Each keycode adds a specific number of VoIP trunks. You must reboot your Business

Communications Manager after you enter VoIP keycodes to activate trunking. You then must

identify each trunk as either H.323 or SIP trunks. Refer to “Counting IP trunks” on page 87.

If you want to use the MCDN features on the VoIP trunks, you will need an MCDN keycode. If

you have already deployed MCDN for your SL-1 PRI lines, you do not require an additional

keycode.

Note: SIP trunks do not support MCDN.

Published IP address

You will require the public IP address to set up the gateways for VoIP trunks. Refer to “Finding

the published IP address” on page 35 for details.

SIP network data considerations

If you plan to use SIP trunking, ensure that your IP network is set up to accommodate the

restrictions and requirements. Refer to the NAT, Firewall and QoS sections of the Programming

Operations Guide for data programming details for these utilities. To view a general list of

restrictions and requirements, refer to “SIP trunk interoperability issues” on page 188.

H.323 network applications considerations

In order to maintain a level of quality of transmission over VoIP trunks, QoS monitor must be

enabled and configured. Refer to “Configuring a remote gateway (H.323 trunks)” on page 103 and

“Quality of Service Monitor” on page 127.

If your network uses a gatekeeper (H.323 trunks only), there are also specific settings that must be

set on the Local Gateway screen to recognize the gatekeeper, and also within the gatekeeper

application, so that VoIP lines are recognized. Refer to “Using a gatekeeper” on page 133. If there

is a gatekeeper on the network, you do not have to configure remote gateway settings.

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Avaya IP Telephony Guía de configuración Pagina 86