Inbound call drops after one ring

[Rishi]

Call to <sip:[email protected]:5010> has failed; Cause: 487 Request Terminated/INVITE from 127.0.0.1:5483

I have connected my Yeastar S100 to 3cx, I also have TG200 as GSM gateway that is also connected to YeasterS100. When I forward the call that directly lands to S100 to 3cx it works fine but when calls are coming to S100 via TG200 and forwarded 3cx, call drops after one ring with the following log in the activity log.

 

[leejor]

How is the S100 connected to 3CX? Bridge trunk? Is the GSM gateway the only trunking to the S100?
Have you made use of Wireshark to examine the difference between the working and non-working call?
It may be something in the S100 that is dropping the call (type of forwarding?), does it have any logs to review?

Some additional information about your 3CX setup might also help...

https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/

 

[Rishi]

1. S100 is connected via sip trunk,
2. GSM gateway is only trunking with S100

Version Number	16.0.1078
OS	Windows 10 Pro