Mobile phone cannot access to 3CX server from 3G/4G network

[Kane Wong]

The public ip address of my 3CX server was changed yesterday, would it be the issue?

I have checked the my3cx domain name which is pointing to my new ip address already.

I found the pbx reject my call from the Activity Log

07/12/2019 8:16:31 PM - Leg L:7.1[Unknown:] is terminated: Cause: BYE from PBX

07/12/2019 8:16:31 PM - Terminated from "3cxUser"<sip:[email protected]3cx.ca>;tag=R6UW0TsQNa4NFLtXq7VfxQW05E6Ci8p6 to <sip:[email protected]3cx.ca;tag3cx=phd9o4rm>;tag=ca465f27; reason: Rejected

07/12/2019 8:16:31 PM - L:7.1[Unknown:] Sending: OnSendResp Send 603/INVITE from 0.0.0.0:0 tid=PjCuG.xAmjqm8X7nHlImjepWLXIVBT5hHi Call-ID=TPNFDhckMZ8Zwh6p1.RH5jnEVgFLR2cZ: SIP/2.0 603 Decline Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK-524287-2---PjCuG.xAmjqm8X7nHlImjepWLXIVBT5hHi;rport=5080 Via: SIP/2.0/UDP [::ffff:154.5.40.223]:51939;branch=z9hG4bK-524287-1---tunneltid;rport;tnlid=clnt.1-.bocskyvbbkw1hapoid..wxhhuwu2yht Via: SIP/2.0/TCP 127.0.0.1:50195;rport;branch=z9hG4bKPjCuG.xAmjqm8X7nHlImjepWLXIVBT5hHi;alias To: <sip:[email protected]3cx.ca;tag3cx=phd9o4rm>;tag=ca465f27 From: "3cxUser"<sip:[email protected]3cx.ca>;tag=R6UW0TsQNa4NFLtXq7VfxQW05E6Ci8p6 Call-ID: TPNFDhckMZ8Zwh6p1.RH5jnEVgFLR2cZ CSeq: 1108 INVITE Warning: 499 3CX001 "Caller is forbidden" Content-Length: 0

07/12/2019 8:16:31 PM - SendMsg from <sip:[email protected]3cx.ca;tag3cx=phd9o4rm>;tag=ca465f27 to "3cxUser"<sip:[email protected]3cx.ca>;tag=R6UW0TsQNa4NFLtXq7VfxQW05E6Ci8p6

07/12/2019 8:16:31 PM - OnOffer from "3cxUser"<sip:[email protected]3cx.ca>;tag=R6UW0TsQNa4NFLtXq7VfxQW05E6Ci8p6

07/12/2019 8:16:31 PM - [CM502001]: Source info: From: "3cxUser"<sip:[email protected]3cx.ca>;tag=R6UW0TsQNa4NFLtXq7VfxQW05E6Ci8p6; To: <sip:[email protected]3cx.ca;tag3cx=phd9o4rm>

07/12/2019 8:16:31 PM - [CM503013]: Call(C:7): Incoming call rejected, caller is unknown; msg=Invite-IN Recv Req INVITE from 127.0.0.1:5080 tid=PjCuG.xAmjqm8X7nHlImjepWLXIVBT5hHi Call-ID=TPNFDhckMZ8Zwh6p1.RH5jnEVgFLR2cZ: INVITE sip:[email protected]:5060;transport=UDP;tag3cx=phd9o4rm SIP/2.0 Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK-524287-2---PjCuG.xAmjqm8X7nHlImjepWLXIVBT5hHi;rport=5080 Via: SIP/2.0/UDP [::ffff:154.5.40.223]:51939;branch=z9hG4bK-524287-1---tunneltid;rport;tnlid=clnt.1-.bocskyvbbkw1hapoid..wxhhuwu2yht Via: SIP/2.0/TCP 127.0.0.1:50195;rport;branch=z9hG4bKPjCuG.xAmjqm8X7nHlImjepWLXIVBT5hHi;alias Max-Forwards: 69 Record-Route: <sip:[email protected]:5080;user=proxy;uri=clnt.1-.bocskyvbbkw1hapoid..wxhhuwu2yht> Contact: "3cxUser" <sip:[email protected]:5060;inst="5DE9FC";rinstance=1-.bocskyvbbkw1hapoid..wxhhuwu2yht> To: <sip:[email protected]3cx.ca;tag3cx=phd9o4rm> From: "3cxUser"<sip:[email protected]3cx.ca>;tag=R6UW0TsQNa4NFLtXq7VfxQW05E6Ci8p6 Call-ID: TPNFDhckMZ8Zwh6p1.RH5jnEVgFLR2cZ CSeq: 1108 INVITE Session-Expires: 1800 Min-SE: 90 Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS Content-Type: application/sdp Proxy-Authorization: Digest username="29920",realm="3CXPhoneSystem",nonce="414d535c1339de0f63:dbb902ffbe01dabc7f6ef4089bf7edbd",uri="sip:[email protected]3cx.ca;transport=tcp;tag3cx=phd9o4rm",response="0335b551340b360bdde2f8032dac630b",algorithm=MD5 Supported: replaces, 100rel, timer, norefersub User-Agent: 3CXPhone for iPhone 15.5.18.472 Content-Length: 365

 

[Kane Wong]

Problem resolved.

It was caused by the incorrect "Local SIP Domain" in FQDN settings.

I went through this thread to find the tips.

https://www.3cx.com/community/threads/3cxphone-v14-remote-calls-forbidden.43789/

 

[leejor]

If the App is attempting to contact the 3CX server, when outside the local LAN, using the local IP, then Yes, that's a problem, and was probably caused by an incorrect datafill/option selection, when the initial install was done. It may have been in the options chosen under step 3...
https://www.3cx.com/docs/manual/configuring-your-pbx/