Howto12r2:Central SIP trunk with multiple subscriber numbers

Applies To

This information applies to

V12r2 sr6 Build 12.5236 and later.

More Information

In this scenario every customer site is an innovaphone Gateway/PBX providing PBX functionality or Gateway functionality with ISDN PRI BRI or SIP Trunk to a legacy PBX on a location. In stead of having a ISDN or SIP Trunk to the PSTN network on every location, there will be a Central big sip trunk on one location that provides the PSTN access for all other locations. The call routing is made by innovaphone PBX containing e164 node tree with appropriate placed Gateways for each customer location.

Overview

The following diagram shows a simple scenario of a Funnel PBX with N locations providing a central big sip trunk for all sub-locations. The sub-locations provding PBX functionality as wel the gateway-functionality to a legacy PBX for migrations.

Configuration

Start with configurating your Funnel PBX with the following Objects. Node Objects, Node Object with Country Code, in this example the Node Objects for NL (Netherlands) with country code 31. Node Objects for the locations, in this example the Node Objects for the locations Roermond (RM) and Maastricht (MT). Gateway Objects for the locations, so that the PBX/Gateway on that location can register against this opbject via SIP. Number Map Objects for the locations, in case you don't have a closed DID range but one or more MSN numbers, you can create these as a Number Map Object and route the call to the desired number or object within a location. Trunk Line Object in the Funnel-PBX, the central trunk line object that register at the big sip trunk and an internal registration to the Funnel-PBX.