A Tale of 2 CloudUCMs

Hello all -

I have 2 CloudUCM instances, one is fantastic, no issues. I stood up a second one for a customer, and most every outbound call rings and immediately hangs up when answered on the called end. SIP logs show a 481 error: SIP/2.0 481 Call/Transaction Does Not Exist Via error. (via Telnyx)

The setup is exactly the same and I’ve even reset the CloudUCM to factory settings and started over.

Any thoughts on what’s going on here or anyone expereinced the same?

Sorry misread the post and deleted my first comment.

Is it the same Telnyx account?

Do you have a outbound profile for the connection?

Thanks for the reply, James.

Same Telnyx account, different SIP connections. Individual outbound voice profiles are there. Interestingly enough, the behavior has swapped systems. One is doing it while the other isn’t. I’ve sent PCAPs to Telnyx and Grandstream.

Actually Grandstream has been super responsive and willing to work on the issue.

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Are you a registered partner or an end user? As a registered partner I get same day response. They support the channel so you should always go through your partner for support.

I’m not asking you to – it’s just like everything else in our business – nurture vs nature and YMMV.

We’re not using the CloudUCM yet in production – but we are testing it.