Avaya 7960 - Manual (Page 22)

FAS; Reviewed:
WCH 10/22/2004 Solution & Interoperability Test Lab Application Notes
©2004 Avaya Inc. All Rights Reserved.
22 of 35
Cisco7960SIP.doc
5.2. Configure the Avaya Converged Communications Server
5.2.1. Adding an Address Map
Address maps are used in the Converged Communications Server to specify how incoming SIP
calls are to be routed, based on the dialed number. They are grouped by the SIP contact to which
they will be routed. For host maps, specified in the Hosts link, the SIP contact must be specified
completely. To configure support for the Outboard Proxy SIP features supported by
Communication Manager on an Avaya Media Server, Media Server maps are defined using the
Media Servers link. In this case, the contact information is automatically generated and dialed
numbers matching the map specification cause the call to be routed to the associated Media
Server. In this configuration, any number the user may dial, including the FNEs defined in
Section 5.1, must be covered by the map specification, so that these calls (i.e. SIP INVITE
messages) will be routed to the S8300/G700, where Communication Manager will route the call
based on its dial plan. This means that the map specification(s) must agree with the dial plan
administered in Communication Manager.
Note: To route toll calls back through the Converged Communications Server and on to a SIP
service provider, configure Communication Manager such that the number sent to Converged
Communications Server on the SIP trunk is not identical to that dialed by the user. Otherwise
the Converged Communications Server will route the call back to Communication Manager and
a loop will result. For example, to dial outbound numbers, the user may have to dial “9”
followed by the area code and number. A media server map in the Converged Communications
Server would match on the initial 9 and route the call to Communication Manager.
Communication Manager would in turn route the call back to the Converged Communications
Server using a modified form of the number that would match a Converged Communications
Server address map for outbound routing to the service provider.
The following steps describe how to administer the Media Server Map. See Reference [1] for
more information on the syntax used to specify address maps.