SIP Phone Registration and SIP Phone to SBC Edge to ISDN Endpoint

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:

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 configured as follows:

    

   Transformation Table Configuration

   Input Field Type	Input field Value	Output Field Type	Output Field Value	Match Type	Description
   Called Address Number	.*6(\d{3})$	Called Address/Number	6/1	Mandatory	LyncSetup: Full Number
   Calling Address Number	(.*)	Calling Address/Number	\1	Mandatory	LyncSetup: Full Number

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 entry to the new Call Routing Table and configure with the values below; keep the fields not listed as the default values.

    

   Call Routing Table Configuration

   Field	Value
   Number/Name Translation Table	Select appropriate Translation Table (i.e., Calls to ISDN phones)
   Destination Signaling Group	Select appropriate Signaling Group (i.e., ISDN:Lync Setup)

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 with the values below; keep the fields not listed as the default values.

    

   Call Routing Table Configuration

   Field	Value
   SIP Mode	Local Registrar
   Registrar	SIP Phones

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 with the values listed below; keep the keep the fields not listed as the default values.

    

   Call Routing Table Configuration

   Field	Value
   Port Alias	Specifies an alias for the port (i.e., T1 to Meridian)
   Description	Specifies the description  (i.e., T1 to Meridian)

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 with the values listed below; keep the fields not listed as the default values.

    

   Call Routing Table Configuration

   Field	Value
   Description	Description of Signaling Group
   Switch Variant	QSIG
   Tone Table	Default Tone Table
   Call Routing Table	Select appropriate Call Routing Table

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:

Verify SIP Messaging