Add a VoIP trunk on a Grandstream UCM
Connect the UCM to your phone line provider.
| What you need | Affects |
|---|---|
| Admin access to the UCM web portal, and your provider's SIP details | All outside calls |
1. Add the trunk
- Open VoIP trunksGo to Extension/Trunk → VoIP Trunks and click Add SIP Trunk.
- Register trunkChoose a Register SIP Trunk.
- DetailsEnter the provider host name, username, authentication ID and password.
- SaveClick Save, then Apply Changes at the top of the page.
2. Check it
The trunk status should show registered. Then add inbound and outbound routes.
Troubleshooting
| Problem | Likely cause and fix |
|---|---|
| Not registered | Re-check the login, and see "UCM trunk not registered". |