User's Manual

Setting the trunk prefixes
About this task
Where a prefix has been implemented for outgoing calls, that same prefix needs to be added
to trunk settings. The prefix is then used as follows:
• On incoming calls the prefix is added to any incoming ICLID received with the call. That
allows the ICLID to be used by B5800 Branch Gateway phones and applications to make
return calls.
• On outgoing calls, the short codes used to route the call to a trunk must remove the dialing
prefix.
Procedure
1. Start Manager and connect to the B5800 Branch Gateway system.
2. In the left navigation pane, click Line.
3. For each line enter the prefix. The location of the relevant setting varies for each
trunk type.
• For analog trunks, select the Line Settings tab and enter the prefix in the
Prefix field.
• For T1 and T1 PRI trunks, select the PRI 24 Line tab and enter the prefix in
the Prefix field.
• For BRI, E1 PRI, S0 and QSIG trunks, select the PRI Line tab and enter the
appropriate prefix in the following fields:
• Prefix
• National Prefix
• International Prefix
4. Select File > Save Configuration.
SIP trunk prefixes
The prefix fields Prefix, National Prefix, Country Code and International Prefix are available
with the SIP line settings. These fields are used in the following order:
Initial configuration for a Distributed Branch
134 Implementing the Avaya B5800 Branch Gateway November 2011
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