SBC 1000/2000 4.1.x : Working with Telephony Routing

In the Sonus SBC 1000/2000 system, all call routing occurs between Signaling Groups.

Signaling Groups are the logical representations of call-handling systems such as private branch extensions (PBX), Microsoft Lync 2010 Servers, fax machines and analog phones.

In order to route any call to or from a call system connected to Sonus SBC 1000/2000, you must first configure a Signaling Group to represent that device or system. The following list illustrates the hierarchical relationships of the various Telephony routing components of a Sonus SBC 1000/2000 call system:

Signaling Group — describes the source call and points to a routing definition known as a Call Route Table
  → Call Route Table — contains one or more Call Route Entries
         → Call Route Entries → points to the destination Signaling Group(s)

Each call routing entry describes how the call should be routed and also points to a Transformation Table which defines the conversion of names, numbers and other fields when routing a call.

Logic Path

The diagram below illustrates possible paths of a call from an external call from a ISDN PRI service line connected to the Sonus SBC 1000/2000 system to an internal Lync 2010 server or analog phone or fax devices connected to a Tenor Analog device.

Sonus SBC 1000/2000 Call Logic Steps

  1. An outside call comes through the ISDN PRI line connected to the Sonus SBC 1000/2000 system and is routed to the ISDN Signaling Group.
  2. In order to route the call, the Sonus SBC 1000/2000 ISDN Signaling Group system engages the Call Route Table attached to it.
  3. Sonus SBC 1000/2000 processes the Call Route Table entries and their attached Transformation Tableentries, looking for a match to the called number.
    1. Sonus SBC 1000/2000 finds a match for a 4xxx local extension managed by a Lync 2010 Server.
    2. Sonus SBC 1000/2000 finds a match for a x2001 or x2002 local extension analog device, managed by a Tenor Analog system.
  4. Sonus SBC 1000/2000 routes the call to the appropriate Signaling Group and the receiving system processes the call.

Related Topics

Managing Signaling Groups
Managing Call Routing Tables
Managing Transformation Tables
Managing Action Configurations
Managing Action Sets
Routing Usage Examples