Voyced SIP Trunk Setup for 3CX (Manual Configuration)
Works for inbound and outbound calls using Voyced as an external (non-template) SIP provider.
Sample Details (Replace with your real info)
| Field | Value |
|---|---|
| Account / DID | Your-Voyced-DID |
| Service Password | YourServicePassword |
| SIP Server | sip.voyced.eu |
| SIP Port | 5060 |
| Transport | UDP |
| Supported Codecs | G.711 A-law, G.711 μ-law, G.729 (optional) |
Step-by-Step Configuration
1. Log into 3CX Admin Console
-
Go to
https://<your-server>:5001 -
Log in with admin credentials
2. Add a New SIP Trunk
-
Go to SIP Trunks
-
Click + Add SIP Trunk
Fill in:
-
Country:
Generic -
Provider:
Generic SIP Trunk -
Main Trunk Number:
Your-Voyced-DID
Click OK
3. Configure Trunk Settings
Under General tab:
| Setting | Value |
|---|---|
| Registrar | sip.voyced.eu |
| Port | 5060 |
| Authentication Type | Register/Account-Based |
| Authentication ID (SIP User ID) | Your-Voyced-DID |
| Authentication Password | YourServicePassword |
| Number of SIM Calls | Set based on your subscription (e.g. 2, 4, etc.) |
4. Configure Options (Options tab)
| Option | Value |
|---|---|
| Require registration for | In and Outbound |
| Transport Protocol | UDP |
| PBX Delivers Audio | ✅ (recommended if behind NAT or for reliability) |
| Supports Re-Invite | ✅ |
| Supports Replace | ✅ |
| Use default codec order | ✅ |
| DTMF Signalling | RFC2833 |
5. Configure DIDs
-
In the DIDs tab, make sure
Your-Voyced-DIDis listed -
If not, manually add it to route inbound calls
6. Inbound Rules
-
Go to Inbound Rules
-
Click + Add DID Rule
Fill in:
| Field | Value |
|---|---|
| Rule Name | Voyced Inbound |
| DID/DDI | Your-Voyced-DID |
| Route Calls To | An extension, ring group, or IVR menu |
Click OK
7. Outbound Rules
-
Go to Outbound Rules
-
Click + Add
Fill in:
| Field | Value |
|---|---|
| Rule Name | Voyced Outbound |
| Calls to Numbers Starting with Prefix | Leave blank or use _0X. |
| Calls from Extensions | (Optional) |
| Route 1 | Select Voyced SIP Trunk |
Click OK
8. Codec Priority (Advanced > Codec Priority)
Ensure the following codec order:
-
G.711 A-law (PCMA) – preferred in Europe
-
G.711 μ-law (PCMU)
-
G.729 (if licensed)
9. Firewall & NAT Check
Make sure your firewall allows:
| Protocol | Port Range | Purpose |
|---|---|---|
| UDP | 5060 |
SIP signalling |
| UDP | 9000–10999 |
RTP media (voice) |
Testing
-
Make a test outbound call from an extension
-
Call your Voyced DID from a mobile or landline to test inbound
✅ Final Tips
-
Voyced may reject calls if:
-
Your credit is empty
-
You're over your simultaneous call limit
-
-
If inbound audio fails, enable "PBX Delivers Audio"
-
Use 3CX Activity Log > SIP for debugging
-
Use
sip.voyced.euonly – no IPs or outbound proxies
Last updated: 01/08/2025
© Voyced
All information provided is copyrighted and purely informative in nature. It is maintained by Voyced with the greatest of care using reliable sources only.
Given the fast evolution of the telecom sector, Voyced does not offer any guarantee about the accuracy and completeness of the information offered.
We explicitly do not give anyone permission to use this information in any other way than to inform themselves about what (legal) requirements there may be and they need to comply with when registering Services and/or DIDs with Voyced.
