One way audio in outgoing call

[mustafa.ahmad]

Hi,

We have STC SIP connected to an OXE.

Incoming is not at all working, gives a wrong number prompt.

Outgoing is one way audio. Can anyone guide for the resolution.


Thanks in advance

[mustafa.ahmad]

Also, if anyone can let me know where to find the IP compression type parameter that was in the Trunk group parameters in old releases.

because the STC SIP provider is saying that codec from there side is G711. In OXE , where do we exactly change the codec for trunk .

[cavagnaro]

Please search the forum. Issue discussed several times. RTP being blocked

[cavagnaro]

Also read SIP documentation from OXE. It has all explained there

[mustafa.ahmad]

The SIP provider has shared the following capture


INVITE sip:0539061760@10.200.0.7;user=phone SIP/2.0

Via: SIP/2.0/UDP 10.141.218.38:5060;branch=z9hG4bKsbcthLNQBVp6zHLLHaAxLLVI0xnVl0IVH6aaAn0ZT24453

Record-Route: <sip:10.141.218.38:5060;transport=udp;lr>

Call-ID: sbcthLNQxVpazpBILlxp6clnnlVLn6VZnnp6cZAc@BI.AV.H.BB

From: "IT DIRECTOR"<sip:8352414@10.200.0.7;user=phone>;tag=sbc0807sbcthLNQBzAlxZaBpxaVBnAa0ZZBBHBxaapnacIB

To: <sip:0539061760@10.200.0.7;user=phone>

CSeq: 572521476 INVITE

Allow: INVITE,ACK,CANCEL,BYE,PRACK,NOTIFY,SUBSCRIBE,OPTIONS,UPDATE

Supported: timer,path,100rel

User-Agent: OmniPCX Enterprise R12.0 m1.403.12.g

Session-Expires: 1800;refresher=uac

Min-SE: 900

P-Asserted-Identity: "IT DIRECTOR"<sip:8352414@10.189.10.130;user=phone>

Contact: <sip:8352414@10.141.218.38:5060>

Max-Forwards: 70

Content-Length: 342

Content-Type: application/sdp



v=0

o=- 1538662361 1538662361 IN IP4 10.205.20.18

s=SBC call

c=IN IP4 10.205.20.18

t=0 0

m=audio 10804 RTP/AVP 9 8 18 97

a=sendrecv

a=rtpmap:9 G722/8000 ---------------------------------------- Remove

a=ptime:20

a=maxptime:30

a=rtpmap:8 PCMA/8000

a=ptime:20 ---------------------------------------- Remove

a=maxptime:30 ---------------------------------------- Remove

a=rtpmap:18 G729/8000 ---------------------------------------- Remove

a=fmtp:18 annexb=no

a=ptime:20---------------------------------------- Remove

a=maxptime:40---------------------------------------- Remove

a=rtpmap:97 telephone-event/8000


They Have asked to remove the highlighted portion

[mustafa.ahmad]

Also they have told OXE is giving 403 forbidden response.

================================================================================

[No. ] 54
[TimeStamp ] 2018-10-04 17:13:34
[Direction ] SEND
[Msg Name ] OPTIONS
[Module No ] 190
[Local Address ] 10.200.0.7:5079
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 4F 50 54 49 4F 4E 53 20 73 69 70 3A 31 30 2E 31 34 31 2E 32 ...


OPTIONS sip:10.141.218.38:5060 SIP/2.0
Via: SIP/2.0/UDP 10.200.0.7:5079;branch=z9hG4bKtu2ts4pa7abuduubppuhuakh2
Call-ID: kt4kfdbcskapth7477oocdckfb4ufsc2@SoftX3000
From: <sip:10.200.0.7:5060>;tag=bues7ttu
To: <sip:10.141.218.38>
CSeq: 1 OPTIONS
Max-Forwards: 70
Content-Length: 0




================================================================================

[No. ] 55
[TimeStamp ] 2018-10-04 17:13:34
[Direction ] RECV
[Msg Name ] 403
[Module No ] 190
[Local Address ] 10.200.0.7:5079
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 53 49 50 2F 32 2E 30 20 34 30 33 20 46 6F 72 62 69 64 64 65 ...


SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 10.200.0.7:5079;branch=z9hG4bKtu2ts4pa7abuduubppuhuakh2
Record-Route: <sip:10.141.218.38:5060;transport=udp;lr>
Call-ID: kt4kfdbcskapth7477oocdckfb4ufsc2@SoftX3000
From: <sip:10.200.0.7:5060>;tag=bues7ttu
To: <sip:10.141.218.38>;tag=sbc0806sbcthLNQL6IlZBzIlBnza0ac0zp0IpVLpH6aHZaL
CSeq: 1 OPTIONS
Allow: INVITE,ACK,CANCEL,BYE,PRACK,NOTIFY,REFER,SUBSCRIBE,OPTIONS,UPDATE
User-Agent: OmniPCX Enterprise R12.0 m1.403.12.g
Content-Length: 0




================================================================================

[No. ] 56
[TimeStamp ] 2018-10-04 17:13:53
[Direction ] SEND
[Msg Name ] OPTIONS
[Module No ] 196
[Local Address ] 10.200.0.7:5084
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 4F 50 54 49 4F 4E 53 20 73 69 70 3A 31 30 2E 31 34 31 2E 32 ...


OPTIONS sip:10.141.218.38:5060 SIP/2.0
Via: SIP/2.0/UDP 10.200.0.7:5084;branch=z9hG4bKdth2afh2o7ftdhu4et7f4d7c4
Call-ID: cadocoa2hfboke47scckh7tuhcfhohes@SoftX3000
From: <sip:10.200.0.7:5060>;tag=ckak22pa
To: <sip:10.141.218.38>
CSeq: 1 OPTIONS
Max-Forwards: 70
Content-Length: 0




================================================================================

[No. ] 57
[TimeStamp ] 2018-10-04 17:13:54
[Direction ] RECV
[Msg Name ] 403
[Module No ] 196
[Local Address ] 10.200.0.7:5084
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 53 49 50 2F 32 2E 30 20 34 30 33 20 46 6F 72 62 69 64 64 65 ...


SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 10.200.0.7:5084;branch=z9hG4bKdth2afh2o7ftdhu4et7f4d7c4
Record-Route: <sip:10.141.218.38:5060;transport=udp;lr>
Call-ID: cadocoa2hfboke47scckh7tuhcfhohes@SoftX3000
From: <sip:10.200.0.7:5060>;tag=ckak22pa
To: <sip:10.141.218.38>;tag=sbc0804sbcthLNQpc6zHn0xccVzzHAL0nBc0BH0IlcZplZa
CSeq: 1 OPTIONS
Allow: INVITE,ACK,CANCEL,BYE,PRACK,NOTIFY,REFER,SUBSCRIBE,OPTIONS,UPDATE
User-Agent: OmniPCX Enterprise R12.0 m1.403.12.g
Content-Length: 0

[fery_s]

Also, if anyone can let me know where to find the IP compression type parameter that was in the Trunk group parameters in old releases.

because the STC SIP provider is saying that codec from there side is G711. In OXE , where do we exactly change the codec for trunk .

since release 11.2 the trunk codec is change from "SIP EXT Gateway" menu with option "Type of codec negotiation".

[fery_s]

Also they have told OXE is giving 403 forbidden response.

================================================================================

[No. ] 54
[TimeStamp ] 2018-10-04 17:13:34
[Direction ] SEND
[Msg Name ] OPTIONS
[Module No ] 190
[Local Address ] 10.200.0.7:5079
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 4F 50 54 49 4F 4E 53 20 73 69 70 3A 31 30 2E 31 34 31 2E 32 ...


OPTIONS sip:10.141.218.38:5060 SIP/2.0
Via: SIP/2.0/UDP 10.200.0.7:5079;branch=z9hG4bKtu2ts4pa7abuduubppuhuakh2
Call-ID: kt4kfdbcskapth7477oocdckfb4ufsc2@SoftX3000
From: <sip:10.200.0.7:5060>;tag=bues7ttu
To: <sip:10.141.218.38>
CSeq: 1 OPTIONS
Max-Forwards: 70
Content-Length: 0




================================================================================

[No. ] 55
[TimeStamp ] 2018-10-04 17:13:34
[Direction ] RECV
[Msg Name ] 403
[Module No ] 190
[Local Address ] 10.200.0.7:5079
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 53 49 50 2F 32 2E 30 20 34 30 33 20 46 6F 72 62 69 64 64 65 ...


SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 10.200.0.7:5079;branch=z9hG4bKtu2ts4pa7abuduubppuhuakh2
Record-Route: <sip:10.141.218.38:5060;transport=udp;lr>
Call-ID: kt4kfdbcskapth7477oocdckfb4ufsc2@SoftX3000
From: <sip:10.200.0.7:5060>;tag=bues7ttu
To: <sip:10.141.218.38>;tag=sbc0806sbcthLNQL6IlZBzIlBnza0ac0zp0IpVLpH6aHZaL
CSeq: 1 OPTIONS
Allow: INVITE,ACK,CANCEL,BYE,PRACK,NOTIFY,REFER,SUBSCRIBE,OPTIONS,UPDATE
User-Agent: OmniPCX Enterprise R12.0 m1.403.12.g
Content-Length: 0




================================================================================

[No. ] 56
[TimeStamp ] 2018-10-04 17:13:53
[Direction ] SEND
[Msg Name ] OPTIONS
[Module No ] 196
[Local Address ] 10.200.0.7:5084
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 4F 50 54 49 4F 4E 53 20 73 69 70 3A 31 30 2E 31 34 31 2E 32 ...


OPTIONS sip:10.141.218.38:5060 SIP/2.0
Via: SIP/2.0/UDP 10.200.0.7:5084;branch=z9hG4bKdth2afh2o7ftdhu4et7f4d7c4
Call-ID: cadocoa2hfboke47scckh7tuhcfhohes@SoftX3000
From: <sip:10.200.0.7:5060>;tag=ckak22pa
To: <sip:10.141.218.38>
CSeq: 1 OPTIONS
Max-Forwards: 70
Content-Length: 0




================================================================================

[No. ] 57
[TimeStamp ] 2018-10-04 17:13:54
[Direction ] RECV
[Msg Name ] 403
[Module No ] 196
[Local Address ] 10.200.0.7:5084
[Remote Address] 10.141.218.38:5060
[Hex Msg ] 53 49 50 2F 32 2E 30 20 34 30 33 20 46 6F 72 62 69 64 64 65 ...


SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 10.200.0.7:5084;branch=z9hG4bKdth2afh2o7ftdhu4et7f4d7c4
Record-Route: <sip:10.141.218.38:5060;transport=udp;lr>
Call-ID: cadocoa2hfboke47scckh7tuhcfhohes@SoftX3000
From: <sip:10.200.0.7:5060>;tag=ckak22pa
To: <sip:10.141.218.38>;tag=sbc0804sbcthLNQpc6zHn0xccVzzHAL0nBc0BH0IlcZplZa
CSeq: 1 OPTIONS
Allow: INVITE,ACK,CANCEL,BYE,PRACK,NOTIFY,REFER,SUBSCRIBE,OPTIONS,UPDATE
User-Agent: OmniPCX Enterprise R12.0 m1.403.12.g
Content-Length: 0

403 forbidden usually occurs when authentication has problem, if you set the correct user and password, then add the remote IP address in the "Trusted IP Addresses".

[mustafa.ahmad]

Hi Fery,

After adding the SIP provider IP in Trusted IP address , the incoming calls are working.

But the issue for both incoming and outgoing is same , one way audio..

[fery_s]

Hi Fery,

After adding the SIP provider IP in Trusted IP address , the incoming calls are working.

But the issue for both incoming and outgoing is same , one way audio..

check the RTP port range in your firewall , maybe firewall blocked them, also check the ip phone's ip range has route to and from provider ip range.