ZADARMA SIP FAILED
We’re trying to integrate Zadarma PBX (pbx.zadarma.com) with VAPI for a hotel reception system currently in production. SIP extension and virtual number are fully configured and forwarding to @sip.vapi.ai. IPs are whitelisted on both sides. Backend system is fully functional.
What we’ve done:
Followed Zadarma integration docs
SIP forwarding works from Zadarma
API requests sent with proper credentials
Tried both sip.zadarma.com & pbx.zadarma.com
Tested with/without SIP registration
Correct extension format used (153150-108)
All required IPs unblocked
Errors:
Couldn't validate SIP trunk credential
credentialId must be a UUID (on phone number creation)
Problem:
Zadarma had to temporarily block VAPI IPs due to failed connection attempts. They confirmed config is correct. Still, SIP trunk fails to validate no matter what we try.
This is not an isolated case:
Multiple devs on forums and Discord report identical Zadarma issues. Seems like a broader compatibility problem.
This is urgent. We are blocked from launching for a paying hotel client. Please help us resolve this ASAP.
Request:
Manual SIP credential setup on your end
Review Zadarma compatibility
Escalate to engineering if needed
What we’ve done:
Followed Zadarma integration docs SIP forwarding works from Zadarma API requests sent with proper credentials Tried both sip.zadarma.com & pbx.zadarma.com Tested with/without SIP registration Correct extension format used (153150-108) All required IPs unblockedErrors:
Couldn't validate SIP trunk credential
credentialId must be a UUID (on phone number creation)
Problem:
Zadarma had to temporarily block VAPI IPs due to failed connection attempts. They confirmed config is correct. Still, SIP trunk fails to validate no matter what we try.
This is not an isolated case:
Multiple devs on forums and Discord report identical Zadarma issues. Seems like a broader compatibility problem.
This is urgent. We are blocked from launching for a paying hotel client. Please help us resolve this ASAP.
Request:
Manual SIP credential setup on your end
Review Zadarma compatibility
Escalate to engineering if needed
