12 Jul
2006
12 Jul
'06
2:02 p.m.
RTP proxy is enabled, happened for PSTN termination.
also happpened when 2 SIP client behind the different NAT, or when the 2 SIP
client behind same NAT, the BYE message will cause the same error message.
The configuration file is just the same as the file from startup package for
RTP Proxy.
U 69.88.77.66:5120 -> 201.22.33.178:5060
SIP/2.0 200 OK..Via: SIP/2.0/UDP 201.22.33.178:5060;branch=0..Call-ID: c87
e3594-32a56723-65e5 [!at] 201.22.33.178..CSeq (replace the [!at] with a @):
1 OPTIONS..From: sip:pinger@opens
er.org;tag=ad27d066..To: sip:69.88.77.66:5120;tag=qjp2KfWkSXDEoML2..Cont
act: <sip:1001@192.168.1.10:5120>..Allow: INVITE, ACK, OPTIONS, BY
E, CANCEL, REFER, NOTIFY, INFO, PRACK, UPDATE, MESSAGE..Accept: application
/sdp, message/sipfrag, application/dtmf-relay..Supported: replaces..Content
-Length: 0..
U 69.88.77.66:5120 -> 201.22.33.178:5060
INVITE sip:12127977000@201.22.33.178 SIP/2.0..Via: SIP/2.0/UDP 192.1
68.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards: 70..User-Agent:
COSUN V1.49.002 CFG0 ..From: "1001" <sip:1001@201.22.33.
178>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:12127977000@2
03.98.176.178>..Call-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..Contact
(replace the [!at] with a @): <sip:08688
99500500 [!at] 192.168.1.10 (replace the [!at] with a @):5120>..CSeq: 1
INVITE..Supported: replaces..Content-T
ype: application/sdp..Content-Length: 315....v=0..o=- 91081239 73141710 IN
IP4 192.168.1.10..s=SIP CALL..c=IN IP4 192.168.1.10..t=0 0..m=audio 5121 RT
P/AVP 18 4 0 97 3 8 101..a=rtpmap:18 G729/8000..a=rtpmap:4 G723/8000..a=rtp
map:0 PCMU/8000..a=rtpmap:97 iLBC/8000..a=rtpmap:3 GSM/8000..a=rtpmap:8 PCM
A/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP 192.16
8.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc;rport=5120;received=203.122.70.1
55..From: "1001" <sip:1001@201.22.33.178>;tag=CXTKU08d8s
ynkO1U..To: "12127977000" <sip:12127977000@201.22.33.178>..Cal
l-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..CSeq (replace the [!at] with a
@): 1 INVITE..Server: OpenSer (1.0.1
(i386/linux))..Content-Length: 0..Warning: 392 201.22.33.178:5060 "Noisy
feedback tells: pid=16917 req_src_ip=69.88.77.66 req_src_port=5120 in_u
ri=sip:12127977000@201.22.33.178 out_uri=sip:12127977000@203.9
8.176.174 via_cnt==1"....
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 500 I'm terribly sorry, server error occurred (1/SL)..Via: SIP/2.0/
UDP 192.168.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc;rport=5120;received=20
3.122.70.155..From: "1001" <sip:1001@201.22.33.178>;tag=
CXTKU08d8synkO1U..To: "12127977000" <sip:12127977000@201.22.33
.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID: ziblKnSznNbjxCjv@
192.168.1.10..CSeq: 1 INVITE..Server: OpenSer (1.0.1 (i386/linux))..Content
-Length: 0..Warning: 392 201.22.33.178:5060 "Noisy feedback tells: pid=16
917 req_src_ip=69.88.77.66 req_src_port=5120 in_uri=sip:0069086298266808
2 [!at] 201.22.33.178 (replace the [!at] with a @)
out_uri=sip:12127977000@201.22.33.174 via_cnt==1"..
..
U 201.22.33.178:5060 -> 201.22.33.174:5060
INVITE sip:12127977000@201.22.33.174 SIP/2.0..Record-Route: <sip:203
.98.176.178;ftag=CXTKU08d8synkO1U;lr=on>..Via: SIP/2.0/UDP 201.22.33.178;b
ranch=z9hG4bK96da.4cdeb4.0..Via: SIP/2.0/UDP 192.168.1.10:5120;rport=5120;r
eceived=69.88.77.66;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards: 69..Us
er-Agent: COSUN V1.49.002 CFG0 ..From: "1001" <sip:1001@2
03.98.176.178>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:006908629
82668082 [!at] 201.22.33.178 (replace the [!at] with a @)>..Call-ID:
ziblKnSznNbjxCjv [!at] 192.168.1.10..Contact (replace the [!at] with a @):
<sip:1001@69.88.77.66:5120>..CSeq: 1 INVITE..Supported: replace
s..Content-Type: application/sdp..Content-Length: 336....v=0..o=- 91081239
73141710 IN IP4 192.168.1.10..s=SIP CALL..c=IN IP4 201.22.33.178..t=0 0..m
=audio 35042 RTP/AVP 18 4 0 97 3 8 101..a=rtpmap:18 G729/8000..a=rtpmap:4 G
723/8000..a=rtpmap:0 PCMU/8000..a=rtpmap:97 iLBC/8000..a=rtpmap:3 GSM/8000.
.a=rtpmap:8 PCMA/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..
a=nortpproxy:yes..
U 201.22.33.174:5060 -> 201.22.33.178:5060
SIP/2.0 100 Trying..Via: SIP/2.0/UDP 201.22.33.178;branch=z9hG4bK96da.4cde
b4.0,SIP/2.0/UDP 192.168.1.10:5120;rport=5120;received=69.88.77.66;branc
h=z9hG4bK2xcF52ZeIG9RyjPc..From: "1001" <sip:1001@203.98.
176.178>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:006908629826680
82 [!at] 201.22.33.178 (replace the [!at] with a
@)>;tag=BD997FE4-12B5..Date: Wed, 05 Jul 2006 09:54:41 GMT..
Call-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..Server (replace the [!at] with
a @): Cisco-SIPGateway/IOS-12.x..
CSeq: 1 INVITE..Content-Length: 0....
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 500 I'm terribly sorry, server error occurred (1/SL)..Via: SIP/2.0/
UDP 192.168.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc;rport=5120;received=20
3.122.70.155..From: "1001" <sip:1001@201.22.33.178>;tag=
CXTKU08d8synkO1U..To: "12127977000" <sip:12127977000@201.22.33
.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID: ziblKnSznNbjxCjv@
192.168.1.10..CSeq: 1 INVITE..Server: OpenSer (1.0.1 (i386/linux))..Content
-Length: 0..Warning: 392 201.22.33.178:5060 "Noisy feedback tells: pid=16
917 req_src_ip=69.88.77.66 req_src_port=5120 in_uri=sip:0069086298266808
2 [!at] 201.22.33.178 (replace the [!at] with a @)
out_uri=sip:12127977000@201.22.33.174 via_cnt==1"..
..
U 69.88.77.66:5120 -> 201.22.33.178:5060
ACK sip:12127977000@201.22.33.178 SIP/2.0..Via: SIP/2.0/UDP 192.168.
1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards: 70..User-Agent: COS
UN V1.49.002 CFG0 ..From: "1001" <sip:1001@201.22.33.178
;tag=CXTKU08d8synkO1U..To: "12127977000"
<sip:12127977000@203.
98.176.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID: ziblKnSznNb
jxCjv [!at] 192.168.1.10..Contact (replace the [!at] with a @):
<sip:1001@192.168.1.10:5120>..CSeq: 1
ACK..Content-Length: 0....
U 69.88.77.66:5120 -> 201.22.33.178:5060
ACK sip:12127977000@201.22.33.178 SIP/2.0..Via: SIP/2.0/UDP 192.168.
1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards: 70..User-Agent: COS
UN V1.49.002 CFG0 ..From: "1001" <sip:1001@201.22.33.178
;tag=CXTKU08d8synkO1U..To: "12127977000"
<sip:12127977000@203.
98.176.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID: ziblKnSznNb
jxCjv [!at] 192.168.1.10..Contact (replace the [!at] with a @):
<sip:1001@192.168.1.10:5120>..CSeq: 1
ACK..Content-Length: 0....
U 201.22.33.174:5060 -> 201.22.33.178:5060
SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP 201.22.33.178;branch=z9hG4b
K96da.4cdeb4.0,SIP/2.0/UDP 192.168.1.10:5120;rport=5120;received=203.122.70
.155;branch=z9hG4bK2xcF52ZeIG9RyjPc..From: "1001" <sip:08688995005
00 [!at] 201.22.33.178 (replace the [!at] with a
@)>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:00690
862982668082 [!at] 201.22.33.178 (replace the [!at] with a
@)>;tag=BD997FE4-12B5..Date: Wed, 05 Jul 2006 09:5
4:41 GMT..Call-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..Server (replace the
[!at] with a @): Cisco-SIPGateway/
IOS-12.x..CSeq: 1 INVITE..Content-Type: application/sdp..Content-Dispositio
n: session;handling=required..Content-Length: 214....v=0..o=CiscoSystemsSIP
-GW-UserAgent 5365 5815 IN IP4 201.22.33.174..s=SIP Call..c=IN IP4 203.98.
176.174..t=0 0..m=audio 16512 RTP/AVP 18 101..a=rtpmap:18 G729/8000..a=rtpm
ap:101 telephone-event/8000..a=fmtp:101 ..
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP 192.168.1.10:5120;rport=5120
;received=69.88.77.66;branch=z9hG4bK2xcF52ZeIG9RyjPc..From: "08688995005
00" <sip:1001@201.22.33.178>;tag=CXTKU08d8synkO1U..To: "006908629
82668082" <sip:12127977000@201.22.33.178>;tag=BD997FE4-12B5..Date: W
ed, 05 Jul 2006 09:54:41 GMT..Call-ID: ziblKnSznNbjxCjv [!at]
192.168.1.10..Serve (replace the [!at] with a @)
r: Cisco-SIPGateway/IOS-12.x..CSeq: 1 INVITE..Content-Type: application/sdp
..Content-Disposition: session;handling=required..Content-Length: 232....v=
0..o=CiscoSystemsSIP-GW-UserAgent 5365 5815 IN IP4 201.22.33.174..s=SIP Ca
ll..c=IN IP4 201.22.33.178..t=0 0..m=audio 35044 RTP/AVP 18 101..a=rtpmap:
18 G729/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 ..a=nortpproxy:
yes..
12 Jul
12 Jul
5:43 p.m.
Hello,
On 07/12/06 14:02, zhan li wrote:
RTP proxy is enabled, happened for PSTN termination.
also happpened when 2 SIP client behind the different NAT, or when the
2 SIP client behind same NAT, the BYE message will cause the same
error message.
The configuration file is just the same as the file from startup
package for RTP Proxy.
you should get some error messages in syslog /var/log/syslog or
/var/log/messages. Something happened and openser couldn't process the
message. If you do not get something satisfactory, run openser in debug
mode:
debug=7
log_stderror=yes
Do you get this situation often or it happens once in a while.
Cheers,
Daniel
U 69.88.77.66:5120 -> 201.22.33.178:5060
SIP/2.0 200 OK..Via: SIP/2.0/UDP 201.22.33.178:5060;branch=0..Call-ID:
c87
e3594-32a56723-65e5 [!at] 201.22.33.178..CSeq (replace the [!at] with
a @): 1 OPTIONS..From: sip:pinger@opens
er.org;tag=ad27d066..To: sip:69.88.77.66:5120;tag=qjp2KfWkSXDEoML2..Cont
act: <sip:1001@192.168.1.10:5120>..Allow: INVITE, ACK, OPTIONS, BY
E, CANCEL, REFER, NOTIFY, INFO, PRACK, UPDATE, MESSAGE..Accept:
application
/sdp, message/sipfrag, application/dtmf-relay..Supported:
replaces..Content
-Length: 0..
U 69.88.77.66:5120 -> 201.22.33.178:5060
INVITE sip:12127977000@201.22.33.178 SIP/2.0..Via: SIP/2.0/UDP 192.1
68.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards:
70..User-Agent:
COSUN V1.49.002 CFG0 ..From: "1001" <sip:1001@201.22.33.
178>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:12127977000@2
03.98.176.178>..Call-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..Contact
(replace the [!at] with a @): <sip:08688
99500500 [!at] 192.168.1.10 (replace the [!at] with a @):5120>..CSeq:
1 INVITE..Supported: replaces..Content-T
ype: application/sdp..Content-Length: 315....v=0..o=- 91081239
73141710 IN
IP4 192.168.1.10..s=SIP CALL..c=IN IP4 192.168.1.10..t=0 0..m=audio
5121 RT
P/AVP 18 4 0 97 3 8 101..a=rtpmap:18 G729/8000..a=rtpmap:4
G723/8000..a=rtp
map:0 PCMU/8000..a=rtpmap:97 iLBC/8000..a=rtpmap:3
GSM/8000..a=rtpmap:8 PCM
A/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP
192.16
8.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc;rport=5120;received=203.122.70.1
55..From: "1001" <sip:1001@201.22.33.178>;tag=CXTKU08d8s
ynkO1U..To: "12127977000" <sip:12127977000@201.22.33.178>..Cal
l-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..CSeq (replace the [!at]
with a @): 1 INVITE..Server: OpenSer (1.0.1
(i386/linux))..Content-Length: 0..Warning: 392 201.22.33.178:5060 "Noisy
feedback tells: pid=16917 req_src_ip=69.88.77.66 req_src_port=5120 in_u
ri=sip:12127977000@201.22.33.178 out_uri=sip:12127977000@203.9
8.176.174 via_cnt==1"....
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 500 I'm terribly sorry, server error occurred (1/SL)..Via:
SIP/2.0/
UDP
192.168.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc;rport=5120;received=20
3.122.70.155..From: "1001" <sip:1001@201.22.33.178>;tag=
CXTKU08d8synkO1U..To: "12127977000" <sip:12127977000@201.22.33
.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID:
ziblKnSznNbjxCjv@
192.168.1.10..CSeq: 1 INVITE..Server: OpenSer (1.0.1
(i386/linux))..Content
-Length: 0..Warning: 392 201.22.33.178:5060 "Noisy feedback tells: pid=16
917 req_src_ip=69.88.77.66 req_src_port=5120 in_uri=sip:0069086298266808
2 [!at] 201.22.33.178 (replace the [!at] with a @)
out_uri=sip:12127977000@201.22.33.174 via_cnt==1"..
..
U 201.22.33.178:5060 -> 201.22.33.174:5060
INVITE sip:12127977000@201.22.33.174 SIP/2.0..Record-Route: <sip:203
.98.176.178;ftag=CXTKU08d8synkO1U;lr=on>..Via: SIP/2.0/UDP
201.22.33.178;b
ranch=z9hG4bK96da.4cdeb4.0..Via: SIP/2.0/UDP
192.168.1.10:5120;rport=5120;r
eceived=69.88.77.66;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards: 69..Us
er-Agent: COSUN V1.49.002 CFG0 ..From: "1001" <sip:1001@2
03.98.176.178>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:006908629
82668082 [!at] 201.22.33.178 (replace the [!at] with a @)>..Call-ID:
ziblKnSznNbjxCjv [!at] 192.168.1.10..Contact (replace the [!at] with a
@):
<sip:1001@69.88.77.66:5120>..CSeq: 1 INVITE..Supported: replace
s..Content-Type: application/sdp..Content-Length: 336....v=0..o=-
91081239
73141710 IN IP4 192.168.1.10..s=SIP CALL..c=IN IP4 201.22.33.178..t=0
0..m
=audio 35042 RTP/AVP 18 4 0 97 3 8 101..a=rtpmap:18
G729/8000..a=rtpmap:4 G
723/8000..a=rtpmap:0 PCMU/8000..a=rtpmap:97 iLBC/8000..a=rtpmap:3
GSM/8000.
.a=rtpmap:8 PCMA/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101
0-15..
a=nortpproxy:yes..
U 201.22.33.174:5060 -> 201.22.33.178:5060
SIP/2.0 100 Trying..Via: SIP/2.0/UDP
201.22.33.178;branch=z9hG4bK96da.4cde
b4.0,SIP/2.0/UDP 192.168.1.10:5120;rport=5120;received=69.88.77.66;branc
h=z9hG4bK2xcF52ZeIG9RyjPc..From: "1001" <sip:1001@203.98.
176.178>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:006908629826680
82 [!at] 201.22.33.178 (replace the [!at] with a
@)>;tag=BD997FE4-12B5..Date: Wed, 05 Jul 2006 09:54:41 GMT..
Call-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..Server (replace the
[!at] with a @): Cisco-SIPGateway/IOS-12.x..
CSeq: 1 INVITE..Content-Length: 0....
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 500 I'm terribly sorry, server error occurred (1/SL)..Via:
SIP/2.0/
UDP
192.168.1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc;rport=5120;received=20
3.122.70.155..From: "1001" <sip:1001@201.22.33.178>;tag=
CXTKU08d8synkO1U..To: "12127977000" <sip:12127977000@201.22.33
.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID:
ziblKnSznNbjxCjv@
192.168.1.10..CSeq: 1 INVITE..Server: OpenSer (1.0.1
(i386/linux))..Content
-Length: 0..Warning: 392 201.22.33.178:5060 "Noisy feedback tells: pid=16
917 req_src_ip=69.88.77.66 req_src_port=5120 in_uri=sip:0069086298266808
2 [!at] 201.22.33.178 (replace the [!at] with a @)
out_uri=sip:12127977000@201.22.33.174 via_cnt==1"..
..
U 69.88.77.66:5120 -> 201.22.33.178:5060
ACK sip:12127977000@201.22.33.178 SIP/2.0..Via: SIP/2.0/UDP 192.168.
1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards:
70..User-Agent: COS
UN V1.49.002 CFG0 ..From: "1001" <sip:1001@201.22.33.178
;tag=CXTKU08d8synkO1U..To:
"12127977000" <sip:12127977000@203.
98.176.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID:
ziblKnSznNb
jxCjv [!at] 192.168.1.10..Contact (replace the [!at] with a @):
<sip:1001@192.168.1.10:5120>..CSeq: 1
ACK..Content-Length: 0....
U 69.88.77.66:5120 -> 201.22.33.178:5060
ACK sip:12127977000@201.22.33.178 SIP/2.0..Via: SIP/2.0/UDP 192.168.
1.10:5120;branch=z9hG4bK2xcF52ZeIG9RyjPc..Max-Forwards:
70..User-Agent: COS
UN V1.49.002 CFG0 ..From: "1001" <sip:1001@201.22.33.178
;tag=CXTKU08d8synkO1U..To:
"12127977000" <sip:12127977000@203.
98.176.178>;tag=329cfeaa6ded039da25ff8cbb8668bd2.473f..Call-ID:
ziblKnSznNb
jxCjv [!at] 192.168.1.10..Contact (replace the [!at] with a @):
<sip:1001@192.168.1.10:5120>..CSeq: 1
ACK..Content-Length: 0....
U 201.22.33.174:5060 -> 201.22.33.178:5060
SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP
201.22.33.178;branch=z9hG4b
K96da.4cdeb4.0,SIP/2.0/UDP
192.168.1.10:5120;rport=5120;received=203.122.70
.155;branch=z9hG4bK2xcF52ZeIG9RyjPc..From: "1001" <sip:08688995005
00 [!at] 201.22.33.178 (replace the [!at] with a
@)>;tag=CXTKU08d8synkO1U..To: "12127977000" <sip:00690
862982668082 [!at] 201.22.33.178 (replace the [!at] with a
@)>;tag=BD997FE4-12B5..Date: Wed, 05 Jul 2006 09:5
4:41 GMT..Call-ID: ziblKnSznNbjxCjv [!at] 192.168.1.10..Server
(replace the [!at] with a @): Cisco-SIPGateway/
IOS-12.x..CSeq: 1 INVITE..Content-Type:
application/sdp..Content-Dispositio
n: session;handling=required..Content-Length:
214....v=0..o=CiscoSystemsSIP
-GW-UserAgent 5365 5815 IN IP4 201.22.33.174..s=SIP Call..c=IN IP4
203.98.
176.174..t=0 0..m=audio 16512 RTP/AVP 18 101..a=rtpmap:18
G729/8000..a=rtpm
ap:101 telephone-event/8000..a=fmtp:101 ..
U 201.22.33.178:5060 -> 69.88.77.66:5120
SIP/2.0 183 Session Progress..Via: SIP/2.0/UDP
192.168.1.10:5120;rport=5120
;received=69.88.77.66;branch=z9hG4bK2xcF52ZeIG9RyjPc..From: "08688995005
00" <sip:1001@201.22.33.178>;tag=CXTKU08d8synkO1U..To: "006908629
82668082" <sip:12127977000@201.22.33.178>;tag=BD997FE4-12B5..Date: W
ed, 05 Jul 2006 09:54:41 GMT..Call-ID: ziblKnSznNbjxCjv [!at]
192.168.1.10..Serve (replace the [!at] with a @)
r: Cisco-SIPGateway/IOS-12.x..CSeq: 1 INVITE..Content-Type:
application/sdp
..Content-Disposition: session;handling=required..Content-Length:
232....v=
0..o=CiscoSystemsSIP-GW-UserAgent 5365 5815 IN IP4
201.22.33.174..s=SIP Ca
ll..c=IN IP4 201.22.33.178..t=0 0..m=audio 35044 RTP/AVP 18
101..a=rtpmap:
18 G729/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101
..a=nortpproxy:
yes..
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participants (2)
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Daniel-Constantin Mierla -
zhan li