CUCM SIP TRUNK with Huawei PBX

[mohammedobaid]

Dear All,

I configured a SIP trunk with RP, RL and RG 

when I call to the other site which is Huawei PBX 

Calls from Huawei PBX to CUCM is working fine

Connectivity is WAN 

Issue: As I initiate calls from cisco ip phone I get a Busy Tone and call gets disconnected

[Vaijanath Sonvane]

Are you using CUBE Router in between or is there direct SIP Trunk between CUCM and Huawei PBX? Please post logs of your existing failed calls.

[mohammedobaid]

Direct without CUBE router and about logs RTMT is also not working fine

[Vaijanath Sonvane]

Without checking logs, it will be difficult to know what the issue is. Re-check your SIP Trunk configuration. Here are few URLs for SIP Trunk configuration:

https://www.devconnectprogram.com/fileMedia/download/c7536066-015c-4c20-85f8-4c79cfec7272

https://support.yeastar.com/hc/en-us/articles/218130557-How-to-Connect-Cisco-Unified-Call-Manager-to-MyPBX

I hope this will help you.