It’s now time to create a SIP service associating the IP in network interfaces with realms configured previously.
On the CLI lets first create the External SIP interface:
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-85.png)
Remember to issue the done command when completing the sip-port element and exit to jump to the sip-interface branch and issue the done command.
For Internal SIP interface:
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-86.png)
An easy way to confirm the association of the IP address with the correct realm is issuing the command:
show virtual
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-87.png)