Grandstream: SIP Trunk & Caller ID Setup
SIP Trunk Setup
1. Extension / Trunk > VoIP Trunks

2. Select + Add SIP Trunk

3. General Trunk Settings
- Type:
Register SIP Trunk
- Provider Name:
Voxtelesys
- Host Name:
From Voxtelesys
- Username:
From Voxtelesys
- Password:
From Voxtelesys

4. Save and re-edit Trunk
- From Domain:
Same as the Host Name

Go to the advanced tab and select the codecs:
- PCMU
- PCMA
- G.729
- Send PPI Header:
Enabled
- PPI Mode:
DOD Number

5. Save
Update Caller ID
1. VoIP Trunks > Options > DOD

2. Select + Add DOD
- DOD Number:
Number from Voxtelesys
- DOD Name:
Pick a name identifier
- Add Extensions that will use this number as their caller ID.

3. Save and apply config
If you need help configuring your trunk or inbound numbers check out the guides below! More Voxtelesys Portal Guides here!
For more Grandstream Guides, click here!