
Parameter: National / Prefix to insert
For incoming national (NPA) calls this parameter defines the prefix to insert after stripping any
digits necessary from the incoming phone number prior to conversion to E.164 format.
Mobility prefix
Before configuring and deploying the Avaya 3100 Mobile Communicator solution, the
administrator determines the mobility prefixfor the Avaya 3100 Mobile Communicator Gateway.
The mobility prefix is a digit prefix used to prefix to all calls that will be sent to the Avaya 3100
Mobile Communicator Gateway. This includes the target DN number of all UEXTs for Avaya
3100 Mobile Communicator users as well as the service DN calls from Avaya 3100 MC - Client
clients. The mobility prefix provides a unique digit sequence within the SIP domain to route
calls to a specific Avaya 3100 Mobile Communicator Gateway that does not conflict with the
existing dial plan and routing configuration for CDP and UDP numbers. If the UEXT target DN
did not have this prefix to distinguish Avaya 3100 MC - Client calls, the UEXT extended SIP
calls would loop back to the UEXT.
Mobility prefixes have the following requirements:
• One mobility prefix is required per gateway.
• On the call server you must configure
- The dial plan to send all calls with this prefix to the NRS.
- All UEXT’s for Avaya 3100 MC - Client users must have a target DN with the prefix
of the Avaya 3100 Mobile Communicator Gateway to which their Avaya 3100 MC -
Client is registered.
- The incoming service DN call must have its digits manipulated so that the PSTN
number dialed for the service DN is mapped to a number prefixed by the mobility
prefix. This mapping will trigger the NRS to send this call to the Avaya 3100 Mobile
Communicator Gateway3100 and the Avaya 3100 Mobile Communicator Gateway
will strip this prefix as with any other mobility prefix prefixed call to reveal the service
DN configured on the Avaya 3100 Mobile Communicator Gateway.
• The NRS must have a routing rule to send all calls with this prefix to the Avaya 3100
Mobile Communicator Gateway.
• The mobility prefix is configured on the Avaya 3100 Mobile Communicator Gateway in
the User Prefix for Call Termination field.
Deployment planning
52 Deployment Guide October 2010
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