SIP Trunk with Sipgate not receiving inbound calls
Hey Vapi team,
I’m having persistent issues getting inbound calls to work with my custom SIP trunk via Sipgate.de. Here's what I've done and confirmed so far:
Setup
SIP Server: sipgate.de
Port: 5060
Protocol: UDP
SIP ID (Username): 2513697e40
Public IP in Contact Header: Enabled
Options Ping: Enabled
SIP Trunk is fully configured in Vapi and appears to be active.
Tests
I can successfully register and receive calls via Zoiper with the exact same SIP credentials.
→ (Screenshot 1 attached – working inbound call on Zoiper)
However, when using Vapi, any call to my number (+4915792320882) results in:
"Der gewünschte Gesprächspartner ist zurzeit nicht erreichbar" (The desired contact is currently not available)
No INVITE appears in Vapi’s Call Logs (see Screenshot 3)
Outbound works fine, and the SIP registration looks healthy (Screenshot 2)
Expected:
Vapi should receive the inbound SIP INVITE from Sipgate
Agent should be triggered (Benni Boller is assigned)
Actual:
Call fails immediately with "not reachable"
No sign of INVITE in logs
Last test:
April 7th, ~18:15 CEST
(No Call ID, as no inbound log entry was generated)
I'd appreciate any insight you can provide — I'm starting to suspect this might be related to how Sipgate handles public IP routing or missing ACKs from Vapi.
Thanks a lot
I’m having persistent issues getting inbound calls to work with my custom SIP trunk via Sipgate.de. Here's what I've done and confirmed so far:
SetupSIP Server: sipgate.de
Port: 5060
Protocol: UDP
SIP ID (Username): 2513697e40
Public IP in Contact Header:
EnabledOptions Ping:
EnabledSIP Trunk is fully configured in Vapi and appears to be active.
TestsI can successfully register and receive calls via Zoiper with the exact same SIP credentials.
→ (Screenshot 1 attached – working inbound call on Zoiper)
However, when using Vapi, any call to my number (+4915792320882) results in:
"Der gewünschte Gesprächspartner ist zurzeit nicht erreichbar" (The desired contact is currently not available)
No INVITE appears in Vapi’s Call Logs (see Screenshot 3)
Outbound works fine, and the SIP registration looks healthy (Screenshot 2)
Expected:Vapi should receive the inbound SIP INVITE from Sipgate
Agent should be triggered (Benni Boller is assigned)
Actual:Call fails immediately with "not reachable"
No sign of INVITE in logs
Last test:April 7th, ~18:15 CEST
(No Call ID, as no inbound log entry was generated)
I'd appreciate any insight you can provide — I'm starting to suspect this might be related to how Sipgate handles public IP routing or missing ACKs from Vapi.
Thanks a lot
