Dial Plan Transparency is a business continuity feature. During a network outage, Dial Plan Transparency preserves the dial plan and reroutes all new calls to the PSTN. Communication Manager and Session Manager support Dial Plan Transparency in the Listed Directory Number or DTMF method as follows:
A PSTN call routes to a single LDN at the far end.
The PSTN call carries the identity of the calling party.
The far end answers the call, and the calling side sends identifying DTMF digits of the called party.
For more information about the Dial Plan Transparency feature, see the Communication Manager documentation and Avaya Aura® Dial Plan Transparency White Paper on the Avaya Support website at http://support.avaya.com/.
Note:
Dial Plan Transparency can be triggered by a call between endpoints in different Session Manager locations. However, if a data network failure occurs within a Session Manager location, a Dial Plan Transparency call is not supported. Administrators must plan their data network accordingly to decide how to partition users into different locations.
In a mixed environment with SIP and non-SIP devices, the Session Manager Dial Plan Transparency feature does not support Dial Plan Transparency calls to non-SIP devices connected to a Communication Manager instance that is different from the Communication Manager instance administered in the Location screen.
