One-way audio from GXP-2000 to softphone

[annexus]

Hello Everyone,

We're testing the free version currently and so far it's going pretty well. However, even before we have external VOIP connectivity -- just testing between extensions -- we have run into a problem.

Between two Grandstream GXP-2000 hardphones, life is wonderful. Calls in both directions work perfectly, every time. Calls established from the 3CX softphone (5.1.4132.0) to the GXP-2000 seem to be working OK as well.

However, calls established from the GXP-2000 to the softphone result in one-way audio about 50% of the time. When this occurs, the softphone can hear the hardphone but the hardphone cannot hear the softphone. The server log shows a report from the media server "No RTP packets were received" from the softphone's IP, but only when the problem is occurring. When the call goes through correctly, no error occurs -- which, I suppose, makes sense. See log below, extension 101 is the softphone, 102 is the GXP.

The client workstation running the softphone is on Vista. The symptoms are the same regardless of whether or not the firewalls are enabled on the server and/or the client. If we can get past this bump in the road, we'll be able to start testing externally. We have a customer who is ready to buy, but this is obviously a deal-breaker if we can't resolve it soon.

Thank you for any insights you can provide,

Chris


15:58:44.468 MediaServerReporting::RTPReceiver [MS105000] C:26.2: No RTP packets were received:remoteAddr=192.168.2.44:42010,extAddr=0.0.0.0:0,localAddr=192.168.2.11:7090
15:58:44.203 Call::Terminate [CM503008]: Call(26): Call is terminated
15:58:44.203 Call::Terminate [CM503008]: Call(26): Call is terminated
15:58:35.609 CallCtrl:nLegConnected [CM503007]: Call(26): Device joined: sip:[email protected]:5060;rinstance=d37a0d1f062f2e23
15:58:35.593 CallCtrl:nLegConnected [CM503007]: Call(26): Device joined: sip:[email protected]:5060;transport=udp
15:58:32.687 CallCtrl:nSelectRouteReq [CM503004]: Call(26): Calling: Ext:101@[Dev:sip:[email protected]:5060;rinstance=d37a0d1f062f2e23]
15:58:32.640 CallCtrl:nIncomingCall [CM503001]: Call(26): Incoming call from Ext.102 to [sip:[email protected]]
15:58:05.500 Call::Terminate [CM503008]: Call(24): Call is terminated
15:58:05.500 Call::Terminate [CM503008]: Call(24): Call is terminated
15:57:54.984 CallCtrl:nLegConnected [CM503007]: Call(24): Device joined: sip:[email protected]:5060;rinstance=d37a0d1f062f2e23
15:57:54.968 CallCtrl:nLegConnected [CM503007]: Call(24): Device joined: sip:[email protected]:5060;transport=udp
15:57:53.593 CallCtrl:nSelectRouteReq [CM503004]: Call(24): Calling: Ext:101@[Dev:sip:[email protected]:5060;rinstance=d37a0d1f062f2e23]
15:57:53.562 CallCtrl:nIncomingCall [CM503001]: Call(24): Incoming call from Ext.102 to [sip:[email protected]]
15:57:08.593 MediaServerReporting::RTPReceiver [MS105000] C:23.2: No RTP packets were received:remoteAddr=192.168.2.44:42006,extAddr=0.0.0.0:0,localAddr=192.168.2.11:7080
15:57:08.343 Call::Terminate [CM503008]: Call(23): Call is terminated
15:57:08.343 Call::Terminate [CM503008]: Call(23): Call is terminated
15:56:59.765 CallCtrl:nLegConnected [CM503007]: Call(23): Device joined: sip:[email protected]:5060;rinstance=d37a0d1f062f2e23
15:56:59.734 CallCtrl:nLegConnected [CM503007]: Call(23): Device joined: sip:[email protected]:5060;transport=udp
15:56:54.453 CallCtrl:nSelectRouteReq [CM503004]: Call(23): Calling: Ext:101@[Dev:sip:[email protected]:5060;rinstance=d37a0d1f062f2e23]
15:56:54.406 CallCtrl:nIncomingCall [CM503001]: Call(23): Incoming call from Ext.102 to [sip:[email protected]]
15:56:48.968 Call::Terminate [CM503008]: Call(22): Call is terminated
15:56:48.968 Call::Terminate [CM503008]: Call(22): Call is terminated
15:56:20.078 CallCtrl:nLegConnected [CM503007]: Call(22): Device joined: sip:[email protected]:5060;rinstance=d37a0d1f062f2e23
15:56:20.062 CallCtrl:nLegConnected [CM503007]: Call(22): Device joined: sip:[email protected]:5060;transport=udp
15:56:17.015 CallCtrl:nSelectRouteReq [CM503004]: Call(22): Calling: Ext:101@[Dev:sip:[email protected]:5060;rinstance=d37a0d1f062f2e23]
15:56:16.984 CallCtrl:nIncomingCall [CM503001]: Call(22): Incoming call from Ext.102 to [sip:[email protected]]
15:56:03.546 FaxCfg::updateContact [CM504008]: Fax Service: registered as sip:888@3CXPhoneSystem with contact sip:[email protected]:5100;user=phone
15:56:03.046 FaxCfg::updateContact [CM504010]: Fax Service: unregistered contact sip:888:5100;user=phone
15:55:59.750 StunClient:nInitTests [CM506001]: STUN request to resolve SIP external IPort mapping is sent to STUN server 64.69.76.23:3478 over Transport 192.168.2.11:5060
15:54:46.078 MediaServerReporting::RTPReceiver [MS105000] C:21.2: No RTP packets were received:remoteAddr=192.168.2.44:42002,extAddr=0.0.0.0:0,localAddr=192.168.2.11:7072
15:54:45.828 Call::Terminate [CM503008]: Call(21): Call is terminated
15:54:45.812 Call::Terminate [CM503008]: Call(21): Call is terminated
15:54:35.078 CallCtrl:nLegConnected [CM503007]: Call(21): Device joined: sip:[email protected]:5060;rinstance=d37a0d1f062f2e23
15:54:35.046 CallCtrl:nLegConnected [CM503007]: Call(21): Device joined: sip:[email protected]:5060;transport=udp
15:54:31.250 CallCtrl:nSelectRouteReq [CM503004]: Call(21): Calling: Ext:101@[Dev:sip:[email protected]:5060;rinstance=d37a0d1f062f2e23]
15:54:31.218 CallCtrl:nIncomingCall [CM503001]: Call(21): Incoming call from Ext.102 to [sip:[email protected]]
15:54:21.750 Call::Terminate [CM503008]: Call(20): Call is terminated
15:54:21.750 Call::Terminate [CM503008]: Call(20): Call is terminated
15:54:07.421 CallCtrl:nLegConnected [CM503007]: Call(20): Device joined: sip:[email protected]:5060;transport=udp
15:54:07.406 CallCtrl:nLegConnected [CM503007]: Call(20): Device joined: sip:[email protected]:5060;rinstance=d37a0d1f062f2e23
15:54:05.312 CallCtrl:nSelectRouteReq [CM503004]: Call(20): Calling: Ext:102@[Dev:sip:[email protected]:5060;transport=udp]
15:54:05.281 CallCtrl:nIncomingCall [CM503001]: Call(20): Incoming call from Ext.101 to [sip:[email protected]:5060]
15:53:34.218 ExtnCfg::updateContact [CM504001]: Ext.101: new contact is registered. Contact(s): [sip:[email protected]:5060;rinstance=d37a0d1f062f2e23/101]
15:53:34.078 ExtnCfg::updateContact [CM504002]: Ext.101: a contact is unregistered. Contact(s): []

 

[h2009]

i'd like an answer to this as well.

 

[dnwklin]

I saw many similar problems without an answer. If 3CX is problem.

 

[discovery1]

Can you check that the Codecs on the GXP-2000 and the 3CX softphone match?

 

[Vali_3CX]

3CX softphone (5.1.4132.0)

Hi, Chris

If the version you provided here is correct, then my advice is to replace your old 3CX softphones with the latest Voip Phone - http://www.3cx.com/forums/new-update-3cx-softphone-release-candidate-8757.html . Not only since version 5 three other ones were released, but also PBX has changed heavily. Definitely, version 5 of the softphone is no longer supported for technical support.

Please try to replace them and do your test again - if the one-way audio issue still persist, then we will ask you for further details.

Regards
vali

 

[deer307]

3CX softphone (5.1.4132.0)

Hi, Chris

If the version you provided here is correct, then my advice is to replace your old 3CX softphones with the latest Voip Phone - http://www.3cx.com/forums/new-update-3cx-softphone-release-candidate-8757.html . Not only since version 5 three other ones were released, but also PBX has changed heavily. Definitely, version 5 of the softphone is no longer supported for technical support.

Please try to replace them and do your test again - if the one-way audio issue still persist, then we will ask you for further details.

Regards
vali

HI ~
I have the two external phone . should I forward the port of firewall in the external. which ports should open in the local of external firewall.

thanks