.. _sip-gateway-port:

SIP Gateway Port
-----------------

.. _21.2|EKB-11070:


View, Add, or Delete a Gateway Port
.....................................

This procedure displays, updates, and deletes existing gateway ports, and adds new gateway ports. 

1. Go to (default menus) **Apps Management > IOS > SIP Gateway Port**. 
2. Choose a site.
3. View the list of existing gateway ports. 
4. Choose an option:  

   * To delete an existing port, select the checkbox for the relevant ports, and click **Delete**. 
   * To update an existing port, click the port name in the list. Update as required. Save your changes. 
   * To add a new port, go to step 5. 

5. To add a new port, click **Add**. Fill out the form with the new port details: 

   * In **LBO Gateway Name**, choose the gateway where you will add the new port. 
   * In **Port Number** enter a port number (free text field). 
   * Choose a port type, either `T1` or `E1`, and optionally, add a description. 

     .. note:: 

        If you've chosen a `T1` port: 
        
        * Choose a **Framing** option, either `sf` (super frame) or `esf` 
          (extended super frame).
        * Choose a **Line Coding** option, either `b8zs` or `ami`.

        If you've chosen ``E1`` port: 

        * Choose a **Framing** option, either `crc4` or `no-crc4`. 
        * **Line Coding** defaults to `hdb3`, which is the only option for this port type. 

   * In **Clock Source**, choose either `line` or `internal`. 
   * Choose **Protocol Side**, either `Network` or `User`.
   * Choose a **ISDN Switch Type**. 
   * Choose **ISDN B-Channel Number Order**, either `ascending` or `descending`.
   * Define whether to set calling/called party number NOA for outgoing calls.

6. Save your changes. 

   A workflow pushes the data, and triggers the Command Builder. The commands for setting up 
   the port are available via (default menus) **Apps Management > IOS > Commands**. You can paste these 
   commands into the gateway. Commands for updates and deletes can also be found in the **Commands** log.