1. Log into the UCM web portal and navigate to Extension/Trunk→Extensions
2. Click on the "Add" button to start creating a new extension. The Extension and SIP/IAX Password
information will be used to register this extension. To set up voicemail, the Voicemail Password will be
required.
3. To register an endpoint to this extension, go into your endpoint's web UI and edit the desired account.
Enter the newly created extension's number, SIP user ID, and password into their corresponding fields
on the endpoint. Enter the UCM's IP address into the SIP server field. If setting up voicemail, enter *97
into the Voice Mail Access Number field. This field may be named differently on other devices.
4. To access the extension's voicemail, use the newly registered extension to dial *97 and access the
personal voicemail system. Once prompted, enter the voicemail password. If successful, you will now
be prompted with various voicemail options.
5. You have now set up an extension on an endpoint.