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This article describes the steps necessary to configure the SBC Edge so that a call may be placed from a SIP phone through the SBC Edge to an ISDN endpoint as depicted by the following call flow:

Topology

On this page:

SBC Edge Configuration

SIP Local Registrar Table Configuration

  1. In the WebUI, click the Settings tab.

  2. In the left navigation pane, go to SIP > Local Registrars

  3. Add a new SIP Local Registrar.

Transformation Table Configuration

  1. In the WebUI, click the Settings tab.

  2. In the left navigation pane, go to Transformation

  3. Add a new Transformation Table.

  4. Add two entries to the new Transformation Table as show below.

    Figure : Transformation Table Configuration

Call Routing Table Configuration

  1. In the WebUI, click the Settings tab.

  2. In the left navigation pane, go to Call Routing Table

  3. Add a new Call Routing Table.

  4. Add an entryto the new Call Routing Table and configure it as shown below.

    Figure : Call Routing Table Configuration

     

SIP Signaling Group Configuration

  1. In the WebUI, click the Settings tab.

  2. In the left navigation pane, go to Signaling Groups.

  3. Add a new SIP Signaling Group and configure it as shown below.

    Figure : SIP Signaling Group Configuration

ISDN Port Configuration

  1. In the WebUI, click the Settings tab.

  2. In the left navigation pane, go to Node Interfaces > Ports.

  3. Click the port you wish to configure.

  4. Configure the port as shown below.

    Figure : ISDN Port Configuration

     

     

ISDN Signaling Group Configuration

  1. In the WebUI, click the Settings tab.

  2. In the left navigation pane, go to Signaling Groups.

  3. Add a new ISDN Signaling Group.

  4. Configure the new ISDN Signaling Group as shown below.

    Figure : ISDN Signaling Group Configuration

Verification

Endpoint Registration:

When the endpoint registers, the registration request arrives to the SBC Edge through the SIP signaling group, the SBC Edge responds to the REGISTRATION request with a 200 OK – a successful SIP endpoint registration occurs.

Using the Log Exchange utility, you can quickly verify the relevant SIP messaging:

Figure : Verify SIP Messaging