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:

1. PCMU
2. PCMA
3. 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!