no audio for outgoing calls via proxy

[rcinfo]

Hi all,
I have a remote office with three Grandstream gxp285 phones connected to the 3cx pbx via proxy manager, on incoming calls I can hear and talk with no problems, on outgoing calls no voice in no way. The extensions are set to 'deliver audio on'.
in th 3cx activity log I can read:
[MS105000] C:142.2: No RTP packets were received:remoteAddr=127.0.0.1:10188,extAddr=0.0.0.0,localAddr=127.0.0.1:7460

can you please help?

 

[lneblett]

The local 3CX system is indicating the voice packets are not being received.

Have you made all the proper adjustments to your firewall and have you run the firewall checker?

 

[rcinfo]

thank you for your reply but I know what 3cx is telling me, what I don't know is why.
I know that tunneling should solve all issues about port forwarding and firewalling, isn't it?.
Anyway I opened and forwarded ports from 5060 to 5490, 9000 to 9049, even if I suppose the only necessary port to be opend is 5090 (3cx tunnel) and the rtp stream should flow thru it once the tunnel connection is established.
I have static IP address on both sides of the tunnel, one vigor router on the remote side and one zywall5 on the server side.
Also have a couple of 3cx softphone connecting from elsewhere that works correctly using 3cx tunnel.
So I think that the problem may be on the client-remote-proxy side, what do you think about?

 

[lneblett]

Tunneling will solve many issues but mostly for those locations that try and block SIP in the first place; hence why there still needs to be the tunneling ports open on the receive end.

The best bet is to get a wireshark capture. Using it, possibly at both ends, we can see where the RTP packets are being directed. You don't have more than one NIC installed anywhere on the same machine, do you?

 

[rcinfo]

Well, I was running the 3cx pbx on a virtual machine, so did you call me a question. Even if, as I just said, the 3cxPhone worked without any problem.
Just yesterday I installed the PBX on a physical machine but nothing changed, on outgoing calls I cannot hear voice and the activity log shows as follow:

this call is not working (outgoing from proxy->grandstream phone to 3cxphone)

09:01:40.125 [MS105000] C:17.1: No RTP packets were received:remoteAddr=127.0.0.1:10038,extAddr=0.0.0.0:0,localAddr=127.0.0.1:7058
09:01:38.093 [CM503008]: Call(17): Call is terminated
09:01:27.078 Session 16812 of leg C:17.1 is confirmed
09:01:26.468 [CM503007]: Call(17): Device joined: sip:[email protected]:1251;rinstance=60b7cdaa068468e8
09:01:26.468 [CM503007]: Call(17): Device joined: sip:[email protected]:5060;transport=udp;user=phone
09:01:26.468 [MS210003] C:17.1:Answer provided. Connection(transcoding mode[unsecure]):127.0.0.1:7058(7059)
09:01:26.468 [MS210001] C:17.2:Answer received. RTP connection[unsecure]: 127.0.0.1:10040(10041)
09:01:26.468 Remote SDP is set for legC:17.2
09:01:23.453 [CM505001]: Ext.302: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone 5.0.14900.0] PBX contact: [sip:[email protected]:5060]
09:01:23.453 [CM503002]: Call(17): Alerting sip:[email protected]:1251;rinstance=60b7cdaa068468e8
09:01:22.984 [CM503025]: Call(17): Calling Ext:Ext.302@[Dev:sip:[email protected]:1251;rinstance=60b7cdaa068468e8]
09:01:22.984 [MS210002] C:17.2:Offer provided. Connection(transcoding mode): 127.0.0.1:7060(7061)
09:01:22.937 [CM503004]: Call(17): Route 1: Ext:Ext.302@[Dev:sip:[email protected]:1251;rinstance=60b7cdaa068468e8]
09:01:22.937 [CM503010]: Making route(s) to <sip:[email protected]:5060;user=phone>
09:01:22.937 [MS210000] C:17.1:Offer received. RTP connection: 127.0.0.1:10038(10039)
09:01:22.937 Remote SDP is set for legC:17.1
09:01:22.937 [CM505001]: Ext.132: Device info: Device Identified: [Man: Grandstream;Mod: GXP Series;Rev: General] Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [Grandstream GXP285 1.2.5.3] PBX contact: [sip:[email protected]:5060]
09:01:22.937 [CM503001]: Call(17): Incoming call from Ext.132 to <sip:[email protected]:5060;user=phone>
09:01:22.937 [CM500002]: Info on incoming INVITE:
INVITE sip:[email protected]:5060;user=phone SIP/2.0
Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK-d8754z-ef7c948cbd7a4132-2---d8754z-;rport=5080;received=192.168.10.10
Via: SIP/2.0/UDP xxx.xxx.xxx.xxx:51328;branch=z9hG4bK-d8754z-tunneltid-1---d8754z-;rport
Via: SIP/2.0/UDP 192.168.20.31:5060;branch=z9hG4bKef7c948cbd7a4132
Max-Forwards: 68
Record-Route: <sip:[email protected]:5080;user=proxy;uri="xxx.xxx.xxx.xxx:51328">
Contact: <sip:[email protected]:5060;transport=udp;user=phone>
To: <sip:[email protected]:5060;user=phone>
From: "Carlo"<sip:[email protected]:5060;user=phone>;tag=d0bdb3d60f0e7baf
Call-ID: [email protected]
CSeq: 17472 INVITE
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, INFO, SUBSCRIBE, UPDATE, PRACK, MESSAGE
Proxy-Authorization: Digest username="132",realm="3CXPhoneSystem",algorithm=MD5,uri="sip:[email protected]:5060;user=phone",nonce="414d535c073513d260:fba2d39dd89b3f74c1878ae785ea3538",response="3257a905eada7f12194032e6c5164294"
Supported: replaces, timer, path
User-Agent: Grandstream GXP285 1.2.5.3
Content-Length: 0
P-Early-Media: Supported

this call is working (incoming from 3cxphone to proxy->grandstream phone)

09:02:32.671 [CM503008]: Call(18): Call is terminated
09:02:26.656 Currently active calls - 1: [18]
09:01:56.140 Session 16820 of leg C:18.1 is confirmed
09:01:55.656 [CM503007]: Call(18): Device joined: sip:[email protected]:5060;transport=udp;user=phone
09:01:55.656 [CM503007]: Call(18): Device joined: sip:[email protected]:1251;rinstance=60b7cdaa068468e8
09:01:55.640 [MS210003] C:18.1:Answer provided. Connection(transcoding mode[unsecure]):127.0.0.1:7062(7063)
09:01:55.640 [MS210001] C:18.2:Answer received. RTP connection[unsecure]: 127.0.0.1:10050(10051)
09:01:55.640 Remote SDP is set for legC:18.2
09:01:54.656 Currently active calls - 1: [18]
09:01:52.625 [CM505001]: Ext.132: Device info: Device Identified: [Man: Grandstream;Mod: GXP Series;Rev: General] Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [Grandstream GXP285 1.2.5.3] PBX contact: [sip:[email protected]:5060]
09:01:52.625 [CM503002]: Call(18): Alerting sip:[email protected]:5060;transport=udp;user=phone
09:01:52.015 [CM503025]: Call(18): Calling Ext:Ext.132@[Dev:sip:[email protected]:5060;transport=udp;user=phone]
09:01:52.015 [MS210002] C:18.2:Offer provided. Connection(transcoding mode): 127.0.0.1:7064(7065)
09:01:51.968 [CM503004]: Call(18): Route 1: Ext:Ext.132@[Dev:sip:[email protected]:5060;transport=udp;user=phone]
09:01:51.968 [CM503010]: Making route(s) to <sip:[email protected]:5060>
09:01:51.968 [MS210000] C:18.1:Offer received. RTP connection: 127.0.0.1:10046(10047)
09:01:51.968 Remote SDP is set for legC:18.1
09:01:51.968 [CM505001]: Ext.302: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone 5.0.14900.0] PBX contact: [sip:[email protected]:5060]
09:01:51.968 [CM503001]: Call(18): Incoming call from Ext.302 to <sip:[email protected]:5060>
09:01:51.968 [CM500002]: Info on incoming INVITE:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK-d8754z-da21697df947ec3a-2---d8754z-;rport=5080;received=192.168.10.10
Via: SIP/2.0/UDP 94.37.179.75:6355;branch=z9hG4bK-d8754z-tunneltid-1---d8754z-;rport
Via: SIP/2.0/UDP 127.0.0.1:1251;branch=z9hG4bK-d8754z-da21697df947ec3a-1---d8754z-;rport=1251
Max-Forwards: 68
Record-Route: <sip:[email protected]:5080;user=proxy;uri="xxx.xxx.xxx.xxx:6355">
Contact: <sip:[email protected]:1251;rinstance=60b7cdaa068468e8>
To: <sip:[email protected]:5060>
From: "Roberto"<sip:[email protected]:5060>;tag=b862354a
Call-ID: MWExNGU4NThhMDhiZGJjYjNiMmZkYzRkOWVkMWQ0ODU.
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Proxy-Authorization: Digest username="302",realm="3CXPhoneSystem",nonce="414d535c073513ef29:2eac7ad96035fda5c2d1d175a8eeb560",uri="sip:[email protected]:5060",response="ab9647a13ef4f85a6daf3beb5a8ee6d1",algorithm=MD5
Supported: replaces
User-Agent: 3CXPhone 5.0.14900.0
Content-Length: 0