1 Extension rings on every inter-office call

[TechDoctor]

Good day everyone! So I have an interesting issue I have found with only 1 client, and only 1 extension within that particular client. Out current setup:

Cloud PBX (Amazon AWS)
6 Extensions all with Grandstream 2160s
All Remote STUN provisioned

Whenever an extension tries to call another extension directly (no outbound, just inter-office), for example 001 tries to call 002, both 002 and 005 will ring, even though 005 is not a part of it at all. 005 will ring on all inter-office calls from one to another. I have erased and re-provisioned the phone 3 times, I have erased and re-added the extension 2 times and I do not have her in any kind of a ring group other than the main ring group for inbound calls. I don't see anything in the phone GUI itself that could be causing this issue, nor any options or rights that could be causing it. This extension is set up just like the others in the office. Any ideas?

 

[Saqqara]

Does each phone have separate sip and rtp ports as you have configured the phone as stun?

Also you need to setup portforwarding on the firewall protecting the phones

https://www.3cx.com/community/threa...gear-nighthawk-x4s-d7800.54620/#post-225296[/

Anther option to save the hassle of the stun config, install sbc locally.

 

[JohnS_3CX]

It may indeed be the case that you have the same SIP port set to both phones (or the router does something unexpected).

Also perhaps there is a call forward on 002 sending calls to 005 (or ring my mobile simultaneously is active on 002 with 005 as the destination?)

 

[TechDoctor]

Thank you both for your assistance. I will make sure that each extension has it's own SIP port and RTP ports. Will update when completed.