Lost calls - Mass Errors 30051

[Sela_KM]

Hi everyone,

We recently installed a new system for a customer, but they are complaining about dropped calls.

Frequently, calls only ring once before hanging up, or some of the phones do not ring at all.

I checked the logs and saw a lot of 30051 errors. Could this be causing the problem? We have a simple SIP trunk registered on the system with a few numbers.

Thank you for your help.

 

[KyriacosS_3CX]

Hi,

Are you using a supported Provider and the correct template and connection guide for them? What provider?

Please check how incoming DIDs are passed to you from the trunk provider, and how the PBX has them set as DIDs. Talking with the provider first usually helps to resolve such issues quickly.

On the PBX verbose logs or a packet capture would show you exactly what is not matching.

 

[Sela_KM]

Hello,

Thanks for your reply. Our provider is Peoplefone, and I saw them in the supported providers list.

What's strange is that sometimes it seems to work very well, and other times it doesn't. The problem does not appear to be consistent. I will check with the provider if the way we set the DIDs is correct.

Could these 30051 errors be causing these problems? I have read that they may just be unauthorized attempts to connect to our system.

Thanks for your help.

 

[Alphabetic]

First you need to start by getting an example call and troubleshoot 1 thing rather then trying to tackle it as a whole.

Oh this call didnt work?

What DID was called?

What was in the INVITE header?

Have I got the DID added under my SIP trunk numbers?