Registers a SIP user ID and password.
The number, i.e. user ID, should be sixteen (16) characters long. It can contain *, #, and blank. The password should be sixteen (16) alphanumeric characters long.
1) Select 5.Features => 5.2 VoIP Options => 5.2.7 SIP Number from the Tree Viewer.
2) View the current number and password.
3) Change the number and password.
4) Save the changes.