[asterisk-users] need help on setup rtp directly between 2 sip clients

haloha haloha201 at gmail.com
Fri Mar 26 05:10:36 CDT 2010 

Hi all

my asterisk server, 2 sip client softphones are the same LAN

asterisk ip address : 192.168.1.5
sip client 1 : 192.168.1.4
sip client 2 : 192.168.1.2

asterisk starts ok with sip

setup the sip.conf
[test]
type=friend
username=test
secret=1000
host=dynamic
context=cucku
directmedia=yes
directrtpsetup=yes

[1000]
type=friend
username=1000
secret=1000
host=dynamic
context=cucku
directmedia=yes
directrtpsetup=yes

when make call between 2 sip clients and see the debug in asterisk console
the problem is asterisk setup the inital call for media = asterisk IP
address, when all things done, asterisk does re-invite to setup the rtp
directly between 2 sip clients

is there any way to setup rtp directly between 2 sip clients, no need to go
through asterisk server

here is my debug log:
<--- SIP read from UDP://192.168.1.4:18341 --->
INVITE sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5> SIP/2.0
Via: SIP/2.0/UDP 192.168.1.4:18341
;branch=z9hG4bK-d8754z-da695e1f167deb68-1---d8754z-;rport
Max-Forwards: 70
Contact: <sip:test at 192.168.1.4:18341>
To: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 2 INVITE
Content-Type: application/sdp
User-Agent: X-Lite release 1104o stamp 56125
Content-Length: 261
v=0
o=- 8 2 IN IP4 192.168.1.4
s=CounterPath X-Lite 3.0
c=IN IP4 192.168.1.4
t=0 0
m=audio 50420 RTP/AVP 107 0 8 101

<--- Transmitting (no NAT) to 192.168.1.4:18341 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.1.4:18341
;branch=z9hG4bK-d8754z-da695e1f167deb68-1---d8754z-;received=192.168.1.4;rport=18341
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
To: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 2 INVITE
User-Agent: Asterisk PBX 1.6.0.26
Supported: replaces, timer
Contact: <sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
Content-Length: 0

Reliably Transmitting (no NAT) to 192.168.1.2:34312:
INVITE sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK2dfa6cce;rport
Max-Forwards: 70
From: "Do Nguyen Ha" <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>
Contact: <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>>
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 102 INVITE
User-Agent: Asterisk PBX 1.6.0.26
Date: Thu, 25 Mar 2010 12:15:05 GMT
Supported: replaces, timer
Content-Type: application/sdp
Content-Length: 309
v=0
o=root 1983608375 1983608375 IN IP4 192.168.1.5
s=Asterisk PBX 1.6.0.26
c=IN IP4 192.168.1.5
t=0 0
m=audio 17580 RTP/AVP 0 3 8 101

<--- SIP read from UDP://192.168.1.2:34312 --->
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK2dfa6cce;rport=5060
Contact: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>;tag=403c255c
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 102 INVITE
User-Agent: X-Lite release 1104o stamp 56125
Content-Length: 0


<--- Transmitting (no NAT) to 192.168.1.4:18341 --->
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.1.4:18341
;branch=z9hG4bK-d8754z-da695e1f167deb68-1---d8754z-;received=192.168.1.4;rport=18341
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
To: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>;tag=as0307d0b3
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 2 INVITE
User-Agent: Asterisk PBX 1.6.0.26
Supported: replaces, timer
ontact: <sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
Content-Length: 0


<--- SIP read from UDP://192.168.1.2:34312 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK2dfa6cce;rport=5060
Contact: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>;tag=403c255c
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 102 INVITE
Content-Type: application/sdp
User-Agent: X-Lite release 1104o stamp 56125
Content-Length: 183
v=0
o=- 8 2 IN IP4 192.168.1.2
s=CounterPath X-Lite 3.0
c=IN IP4 192.168.1.2
t=0 0
m=audio 53062 RTP/AVP 0 8 101

<------------->
ACK sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK2852e1cc;rport
Max-Forwards: 70
From: "Do Nguyen Ha" <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>;tag=403c255c
Contact: <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>>
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 102 ACK
User-Agent: Asterisk PBX 1.6.0.26
Content-Length: 0

<--- Reliably Transmitting (no NAT) to 192.168.1.4:18341 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.1.4:18341
;branch=z9hG4bK-d8754z-da695e1f167deb68-1---d8754z-;received=192.168.1.4;rport=18341
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
To: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>;tag=as0307d0b3
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 2 INVITE
User-Agent: Asterisk PBX 1.6.0.26
Supported: replaces, timer
Contact: <sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
Content-Type: application/sdp
Content-Length: 286
v=0
o=root 1290114102 1290114102 IN IP4 192.168.1.5
s=Asterisk PBX 1.6.0.26
c=IN IP4 192.168.1.5
t=0 0
m=audio 18366 RTP/AVP 0 8 101


Reliably Transmitting (no NAT) to 192.168.1.2:34312:
INVITE sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK39e834a9;rport
Max-Forwards: 70
From: "Do Nguyen Ha" <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>;tag=403c255c
Contact: <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>>
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 103 INVITE
User-Agent: Asterisk PBX 1.6.0.26
Supported: replaces, timer
X-asterisk-Info: SIP re-invite (External RTP bridge)
Content-Type: application/sdp
Content-Length: 286
v=0
o=root 1983608375 1983608376 IN IP4 192.168.1.4
s=Asterisk PBX 1.6.0.26
c=IN IP4 192.168.1.4
t=0 0
m=audio 50420 RTP/AVP 0 8 101

<--- SIP read from UDP://192.168.1.2:34312 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK39e834a9;rport=5060
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>;tag=403c255c
From: "Do Nguyen Ha" <sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 103 INVITE
Content-Length: 0


<--- SIP read from UDP://192.168.1.4:18341 --->
ACK sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5> SIP/2.0
Via: SIP/2.0/UDP 192.168.1.4:18341
;branch=z9hG4bK-d8754z-e104ab75c9163459-1---d8754z-;rport
Max-Forwards: 70
Contact: <sip:test at 192.168.1.4:18341>
To: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>;tag=as0307d0b3
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 2 ACK
User-Agent: X-Lite release 1104o stamp 56125
Authorization: Digest
username="test",realm="asterisk",nonce="44b4dd5e",uri="sip:1000 at 192.168.1.5<sip%3A1000 at 192.168.1.5>
",response="540173a06f742b7f11cde8010f90ec26",algorithm=MD5
Content-Length: 0


<------------->
Reliably Transmitting (no NAT) to 192.168.1.4:18341:
INVITE sip:test at 192.168.1.4:18341 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK584d3aaf;rport
Max-Forwards: 70
From: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>;tag=as0307d0b3
To: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
Contact: <sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 102 INVITE
User-Agent: Asterisk PBX 1.6.0.26
Supported: replaces, timer
X-asterisk-Info: SIP re-invite (External RTP bridge)
Content-Type: application/sdp
Content-Length: 286
v=0
o=root 1290114102 1290114103 IN IP4 192.168.1.2
s=Asterisk PBX 1.6.0.26
c=IN IP4 192.168.1.2
t=0 0
m=audio 53062 RTP/AVP 0 8 101

<--- SIP read from UDP://192.168.1.4:18341 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK584d3aaf;rport=5060
Contact: <sip:test at 192.168.1.4:18341>
To: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
From: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>;tag=as0307d0b3
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 102 INVITE
Content-Type: application/sdp
User-Agent: X-Lite release 1104o stamp 56125
Content-Length: 183
v=0
o=- 8 3 IN IP4 192.168.1.4
s=CounterPath X-Lite 3.0
c=IN IP4 192.168.1.4
t=0 0
m=audio 50420 RTP/AVP 0 8 101

<------------->
Transmitting (no NAT) to 192.168.1.4:18341:
ACK sip:test at 192.168.1.4:18341 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK5dde1d6e;rport
Max-Forwards: 70
From: "1000"<sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>;tag=as0307d0b3
To: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=f543a140
Contact: <sip:1000 at 192.168.1.5 <sip%3A1000 at 192.168.1.5>>
Call-ID: MjFlODY2MmE0OTBmMzE2ZDJhMWEzN2ZmYzUwM2ZkODg.
CSeq: 102 ACK
User-Agent: Asterisk PBX 1.6.0.26
Content-Length: 0

<--- SIP read from UDP://192.168.1.2:34312 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.1.5:5060;branch=z9hG4bK39e834a9;rport=5060
Contact: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>
To: <sip:1000 at 192.168.1.2:34312;rinstance=862211afcf483176>;tag=403c255c
From: "Do Nguyen Ha"<sip:test at 192.168.1.5 <sip%3Atest at 192.168.1.5>
>;tag=as2886cf30
Call-ID: 5fcaa0dc5dd8cac86f01164b2ea6d03a at 192.168.1.5
CSeq: 103 INVITE
Content-Type: application/sdp
User-Agent: X-Lite release 1104o stamp 56125
Content-Length: 183
v=0
o=- 8 2 IN IP4 192.168.1.2
s=CounterPath X-Lite 3.0
c=IN IP4 192.168.1.2
t=0 0
m=audio 53062 RTP/AVP 0 8 101

Thank you
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