Howto:How to Configure Partial Rerouting

Partial Rerouting (PR) is an ISDN supplementary service.

It realizes a call diversion by the replacement of a call connection from a user-A to a user-B by a call connection from user-A to user-C.

User-A and User-C reside in the PSTN. User-B resides within an innovaphone PBX. User-B activated a diversion (CFU, CFNR) towards user-C.

Because of the fact, that the PSTN switch performs the diversion, the B-channels towards your local premises will become free.

The problem with the signaling of user-A’s CGPN towards user-C disappears.

When user-C’s phone rings, he can see, that he receives a diverted call, originally destined from user-A for user-B.

The charging is commonly handled as if PR would not be taking place. User-A pays for the connection user-A à PSTN-switch(user-B). The connection from PSTN-switch(user-B) à user-C is charged to user-B.

Applies To

This information applies to

• innovaphone PBX, V6

More Information

System Requirements

innovaphone PBX with Trunk object.

innovaphone Gateway

Subscription to the Partial Rerouting supplementary service. I.e. the ISDN provider must support and offer the feature, which is usually charged to the subscriber somehow.

Installation

The following pre-conditions are assumed to be present: It is assumed that GWX (or with V6 direct an Isdn Interface) is configured as an H.323 registration towards a trunk object within the local PBX.

• Name: Trunk

• Mode: Register as Gateway

• Gatekeeper Address: 127.0.0.1

• Alias List/Name: Trunk

Calls from the PSTN are coming in via the Isdn interface .

The protocol of the Isdn interface is configured to EDSS1.

Configuration

Open and edit the trunk object under PBX/Objects.

• Activate the Reroute supported checkmark.

• Click on OK.

Open and edit the incoming route from Isdn interface towards GWX under Gateway/Routes.

• Activate the Interworking checkmark.
• From on V6, SR2 consider now the article SR2 Upgrade Issue: Partial Rerouting Over BRI Interfaces
• Click on OK.

The outgoing route does not need to be configured, in order to get this supplementary service working.

Known Problems

PR is just a term.

It can be requested on the protocol level by means of two different procedures, being used in an equivalent manner.

These procedures are: Call Deflection and Call Rerouting.

The V6, SR1 implementation adapts the german PSTN behaviour: BRI interfaces perform Call Deflection. PRI interfaces perform Call Rerouting. Please, ensure that your provider’s procedures perform equally.

Meanwhile it has been proven, that this automatism from above must be configured explicitely. Therefore - from on V6, SR2 consider the article SR2 Upgrade Issue: Partial Rerouting Over BRI Interfaces

Related Articles

SR2 Upgrade Issue: Partial Rerouting Over BRI Interfaces