Cannot register Android app over 3g to public 3cx box

[pauladams]

Cross posted in the 3cx forum

I have the following setup:

3cx box with a private IP (172.16.x.x).

A pix firewall with a public static IP (I have the "public ip address" set in global options)

I have the public IP Natted to the private IP and I am allowing udp 5060 from my host on the internet. If I run ethereal on the 3cx box, I see the request come in, as well as in the 3cx logs.

I have my droid with the 3cx app installed. When I am on wifi (internal work network) it is able to register perfectly and I can make calls, etc.

When I am on 3g, using the same credentials, I get Authentication failed. I look in the server logs and I get this:

13:07:44.464 [CM102001]: Authentication failed for SipReq: REGISTER 172.16.x.xxx tid=PjCXpnl1x.6zOXtyFNDGmW7VUQbCY23BnE cseq=REGISTER [email protected]:5060 / 1478 from(wire); Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings

The weird thing is that they DO match. I have fiddled with 3cx app for ever now and I still can't get it to work. I am rolling out a solution soon and evaluating 3cx but if I cant get users with public IPs to connect over the internet then this solution is worthless to me.

Is this a bug, or am I missing something? I have been back and forth through the documentation on this and I can't get past it.

HELP!

 

[LeonidasG_3CX]

It would be best if you did a wireshark capture of both scenarios, one with WiFi enabled and one with 3G Enabled and send the captures to [email protected]

But before doing that please try using a very weak password in that extension's settings. Try a password like 170 and see what happens.

Can you also confirm that in your PIX firewall you have SIP Helping services disabled? There's usually a setting somewhere in the router related to SIP that you would need to disable.