3CXPhone has one-way souned when used remotely

[athena]

Hello,

My 3CX server (IP 10.0.2.163) is configured, and works perfectly when used from the LAN.

My router is a Cisco RV042G; the port forwarding (called uPnP on this model) is configured as follow :
- port 5060 UDP&TCP forwarded to my 3CX server
- port 5090 UDP&TCP forwarded to my 3CX server
- ports 5000 & 5001 TCP forwarded to my 3CX server
- ports 9000 to 9011 UDP forwarded to my 3CX server (range is limited to 9011 in 3CX config)
- SIP ALG is disabled
- UDP & TCP timeouts are set to 1800

However, when using it via 3CXPhone for Windows remotely, I can hear the remote person, but he cannot hear me (I checked the microphone settings, including with Skype, and it works).


I run the Firewall Checker (with Windows Firewall disabled) and... nothing should work...
I receive the answer "Failed - No response received or port mapping is closed. Port forwarding not configured correctly." for all ports (5060, 5090 and 9000 to 9011).

I also used the Remote Firewall/NAT test utility (using STUN server), and I receive this answer :

Trying to resolve address of proxy FQDN:'mydomain.com'
Server IP has been resolved: 'myfixedIP:5060'->myfixedIP:5060
Start test, v.1.0.4
STUN resolution result: addr = mylocalIP:5091
Extension 601 is registered
Calling *777
Connection with *777 established
WARN:Contact port is not PBX port: 5060->56064
WARN:Audio connection IP not PBX IP: myfixedIP->10.0.2.163

What is port 56064 ??
What does "Audio connection IP not PBX IP" mean ??

Could you please help me to solve these issues ?

Thanks in advance.

 

[leejor]

Well it certainly sounds like a router issue.

Here is someone else that had similar problems.

https://supportforums.cisco.com/discussion/11883606/rv042g-port-forwarding-not-working-ideas

And perhaps, go over this, if you haven't...

http://portforward.com/english/routers/port_forwarding/Linksys/RV042/3CX.htm


In all of the routers that I've used, UPNp is an option that is either on, or off. It will (normally, in a basic set-up, and using compatible devices) configure most port forwarding for you.

https://en.wikipedia.org/wiki/Universal_Plug_and_Play

3CX itself is not a UPNp compatible device and as such requires manual port forwarding.