Tandem SIP-to-SIP Call Flow Example

Overview

This section contains two SIP-to-SIP call flows and message traces The first call flow uses the Route Control (0x00E8) message the second one uses the Outseize Control (0x002C) message.

With Route Control message

Message Trace

1 -RECEIVED From 192.168.1.51:51035 at 2157

INVITE sip:8623000@192.168.1.102 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK034df162

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

To: <sip:8623000@192.168.1.102>

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 101 INVITE

User-Agent: CSCO/7

Contact: <sip:8623001@192.168.1.51:5060>

Expires: 180

Content-Type: application/sdp

Content-Length: 246

Accept: application/sdp

v=0

o=Cisco-SIPUA 27743 2333 IN IP4 192.168.1.51

s=SIP Call

c=IN IP4 192.168.1.51

t=0 0

m=audio 27148 RTP/AVP 0 8 18 101

a=rtpmap:0 PCMU/8000

a=rtpmap:8 PCMA/8000

a=rtpmap:18 G729/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

2 -SENT To 192.168.1.51:5060 at 2157

SIP/2.0 100 Trying

To: <sip:8623000@192.168.1.102>;tag=315186d

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 101 INVITE

Contact: 8623000<sip:8623000@192.168.1.102:5060>

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK034df162

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

X->H

[01 33 00 2d 00 05 00 00 01 0d 03 00 00 05 00 33 01 03 00 33

01 1f 00 18 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29

19 00 08 38 36 32 33 30 30 30 00 29 1b 00 0e 31 39 32

2e 31 36 38 2e 31 2e 31 30 32 00 29 1c 00 04 00 00 13

c4 29 23 00 08 38 36 32 33 30 30 31 00 29 25 00 0e 31

39 32 2e 31 36 38 2e 31 2e 31 30 32 00 29 26 00 04 00

00 13 c4 29 2d 00 08 38 36 32 33 30 30 31 00 29 2f 00

0d 31 39 32 2e 31 36 38 2e 31 2e 35 31 00 29 30 00 04

00 00 13 c4 29 33 00 01 01 27 18 00 09 02 00 00 00 07

86 23 00 10 27 17 00 07 02 00 07 86 23 00 00 27 94 00

04 c0 a8 01 33 27 95 00 04 00 00 6a 0c 27 b0 00 02 00

02 27 b1 00 02 00 01 29 16 00 01 01 29 54 00 08 38 36

32 33 30 30 30 00 29 55 00 0e 31 39 32 2e 31 36 38 2e

31 2e 31 30 32 00 29 56 00 04 00 00 13 c4 29 50 00 31

30 30 30 33 36 62 30 39 2d 35 31 33 30 30 30 33 33 2d

34 66 63 30 66 33 34 62 2d 34 63 32 31 61 37 34 35 40

31 39 32 2e 31 36 38 2e 31 2e 35 31 00 29 53 00 02 01

00]

H->X

[00 0c 00 2d 00 05 00 00 01 0d 03 00 00 05]

X->H

[00 58 00 43 00 0d 00 00 01 0d 03 00 00 05 00 a7 00 23 01 03

00 33 00 42 00 04 29 53 00 02 02 01 29 51 00 22 30 30

30 33 36 62 30 39 35 31 33 30 30 30 32 64 33 61 63 36

61 36 36 66 2d 30 61 31 31 39 32 33 64 00 29 52 00 08

33 31 35 31 38 36 64 00 2a 0e 00 04 c0 a8 01 33]

H->X

[00 05 00 43 00 0d 00]

H->X

[00 72 00 e8 00 00 ff 00 01 29 02 ff fe 02 03 00 1e 00

19 00 04 00 13 00 02 00 08 00 08 00 02 00 65 00 0f 00

01 0b 00 65 00 02 00 00 03 00 33 00 43 00 05 27 7e 00

03 08 00 00 29 19 00 08 38 36 32 33 30 30 30 00 29 1b

00 0d 31 39 32 2e 31 36 38 2e 31 2e 31 31 00 29 23 00

08 38 36 32 33 30 30 31 00 29 25 00 0d 31 39 32 2e 31

36 38 2e 31 2e 35 31 00]

3 -SENT To 192.168.1.11:5060 at 2158

INVITE sip:8623000@192.168.1.11:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.102

To: 8623000<sip:8623000@192.168.1.11:5060>

From: 8623001<sip:8623001@192.168.1.51:5060>;tag=1934922386e

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

Contact: 8623001<sip:8623001@192.168.1.102:5060>

User-Agent: Excel_CSP/83.10.57

Supported: timer

Session-Expires: 1800

Min-SE: 300

CSeq: 1 INVITE

Content-Type: application/sdp

Content-Length: 105

v=0

o=sip 0 0 IN IP4 192.168.1.102

s=SIP_Call

c=IN IP4 192.168.1.132

t=0 0

m=audio 15736 RTP/AVP 0

4 -RECEIVED From 192.168.1.11:5060 at 2158

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1934922386e

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=2645473871

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

CSeq: 1 INVITE

Server: X-Lite release 1103m

Content-Length: 0

5 -RECEIVED From 192.168.1.11:5060 at 2158

SIP/2.0 180 Ringing

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1934922386e

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=2645473871

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

CSeq: 1 INVITE

Server: X-Lite release 1103m

Content-Length: 0

X->H

[00 45 00 e8 00 00 00 00 10 02 02 1e 09 00 01 00 39 00 03 00

08 01 03 00 33 00 2c 00 01 29 50 00 26 45 58 43 45 4c

2d 43 53 50 30 2e 37 38 65 2e 32 31 35 38 2e 34 33 30

40 31 39 32 2e 31 36 38 2e 31 2e 31 30 32 00]

X->H

[00 11 00 43 00 0e 00 00 01 0d 03 00 08 01 00 a7 00 24 00]

H->X

[00 05 00 43 00 0e 00]

H->X

[00 11 00 bf 00 00 ff 00 02 0d 03 00 00 05 0d 03 00 00

05]

6 -SENT To 192.168.1.51:5060 at 2158

SIP/2.0 180 Ringing

To: <sip:8623000@192.168.1.102>;tag=315186d

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 101 INVITE

Contact: 8623000<sip:8623000@192.168.1.102:5060>

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK034df162

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

X->H

[00 07 00 bf 00 00 00 00 10]

7 -RECEIVED From 192.168.1.11:5060 at 2159

SIP/2.0 200 Ok

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1934922386e

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=2645473871

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

CSeq: 1 INVITE

Content-Type: application/sdp

Server: X-Lite release 1103m

Content-Length: 298

v=0

o=8623000 104287537 104288338 IN IP4 192.168.1.11

s=X-Lite

c=IN IP4 192.168.1.11

t=0 0

m=audio 8000 RTP/AVP 0 8 3 98 97 101

a=rtpmap:0 pcmu/8000

a=rtpmap:8 pcma/8000

a=rtpmap:3 gsm/8000

a=rtpmap:98 iLBC/8000

a=rtpmap:97 speex/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

8 -SENT To 192.168.1.11:5060 at 2159

ACK sip:8623000@192.168.1.11:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.102

To: 8623000<sip:8623000@192.168.1.11:5060>;tag=2645473871

From: 8623001<sip:8623001@192.168.1.51:5060>;tag=1934922386e

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

CSeq: 1 ACK

Content-Length: 0

X->H

[00 2e 00 43 00 0f 00 00 01 0d 03 00 08 01 00 a7 00 20 01 03

00 33 00 18 00 03 27 94 00 04 c0 a8 01 0b 27 95 00 04

00 00 1f 40 27 b0 00 02 00 02]

H->X

[00 05 00 43 00 0f 00]

X->H

[00 0d 00 2e 00 04 00 00 01 0d 03 00 08 01 20]

H->X

[00 05 00 2e 00 04 00]

H->X

[00 11 00 00 00 00 ff 00 02 0d 03 00 00 05 0d 03 00 08

01]

X->H

[00 07 00 00 00 00 00 00 10]

H->X

[00 0d 00 ba 00 00 ff 00 01 0d 03 00 00 05 01]

X->H

[00 07 00 ba 00 00 00 00 10]

9 -SENT To 192.168.1.51:5060 at 2159

SIP/2.0 200 OK

To: <sip:8623000@192.168.1.102>;tag=315186d

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 101 INVITE

Contact: 8623000<sip:8623000@192.168.1.102:5060>

Supported: timer

Session-Expires: 1800; refresher=uas

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK034df162

User-Agent: Excel_CSP/83.10.57

Content-Type: application/sdp

Content-Length: 144

v=0

o=sip 0 0 IN IP4 192.168.1.102

s=SIP_Call

c=IN IP4 192.168.1.131

t=0 0

m=audio 15996 RTP/AVP 0 101

a=rtpmap:101 telephone-event/8000

10-RECEIVED From 192.168.1.51:51035 at 2159

ACK sip:8623000@192.168.1.102:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK1e6721b2

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

To: <sip:8623000@192.168.1.102>;tag=315186d

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 101 ACK

User-Agent: CSCO/7

Content-Length: 0

11-RECEIVED From 192.168.1.51:51035 at 2163

BYE sip:8623000@192.168.1.102:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK6dcd4cc5

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

To: <sip:8623000@192.168.1.102>;tag=315186d

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 102 BYE

User-Agent: CSCO/7

Content-Length: 0

X->H

[00 57 00 69 00 08 00 00 01 0d 03 00 00 05 02 02 1e 2a 00 05

01 04 00 04 00 00 00 00 01 05 00 04 00 00 00 ba 01 11

00 04 00 00 03 0b 01 10 00 04 00 00 74 40 01 12 00 04

00 00 79 b8 03 00 33 00 18 00 03 27 4e 00 02 00 10 27

92 00 04 c0 a8 01 83 27 93 00 04 00 00 3e 7c]

H->X

[00 05 00 69 00 08 00]

12-SENT To 192.168.1.11:5060 at 2163

BYE sip:8623000@192.168.1.11:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.102

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=2645473871

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1934922386e

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

CSeq: 2 BYE

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

13-SENT To 192.168.1.51:5060 at 2163

SIP/2.0 200 OK

To: <sip:8623000@192.168.1.102>;tag=315186d

From: "User ID" <sip:8623001@192.168.1.102>;tag=00036b095130002d3ac6a66f-0a11923d

Call-ID: 00036b09-51300033-4fc0f34b-4c21a745@192.168.1.51

CSeq: 102 BYE

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK6dcd4cc5

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

14-RECEIVED From 192.168.1.11:5060 at 2163

SIP/2.0 200 Ok

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1934922386e

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=2645473871

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.78e.2158.430@192.168.1.102

CSeq: 2 BYE

Server: X-Lite release 1103m

Content-Length: 0

X->H

[00 57 00 69 00 09 00 00 01 0d 03 00 08 01 02 02 1e 2a 00 05

01 04 00 04 00 00 00 00 01 05 00 04 00 00 00 00 01 11

00 04 00 00 03 4f 01 10 00 04 00 00 00 00 01 12 00 04

00 00 84 58 03 00 33 00 18 00 03 27 4e 00 02 00 10 27

92 00 04 c0 a8 01 84 27 93 00 04 00 00 3d 78]

H->X

[00 05 00 69 00 09 00]

Using Outseize Control message

Message Trace

1 -RECEIVED From 192.168.1.51:50606 at 666

INVITE sip:8623000@192.168.1.102 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK3fef366f

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

To: <sip:8623000@192.168.1.102>

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 101 INVITE

User-Agent: CSCO/7

Contact: <sip:8623001@192.168.1.51:5060>

Expires: 180

Content-Type: application/sdp

Content-Length: 246

Accept: application/sdp

v=0

o=Cisco-SIPUA 7880 24344 IN IP4 192.168.1.51

s=SIP Call

c=IN IP4 192.168.1.51

t=0 0

m=audio 32676 RTP/AVP 0 8 18 101

a=rtpmap:0 PCMU/8000

a=rtpmap:8 PCMA/8000

a=rtpmap:18 G729/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

2 -SENT To 192.168.1.51:5060 at 666

SIP/2.0 100 Trying

To: <sip:8623000@192.168.1.102>;tag=278629a

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 101 INVITE

Contact: 8623000<sip:8623000@192.168.1.102:5060>

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK3fef366f

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

X->H

[01 33 00 2d 00 02 00 00 01 0d 03 00 00 01 00 33 01 03 00 33

01 1f 00 18 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29

19 00 08 38 36 32 33 30 30 30 00 29 1b 00 0e 31 39 32

2e 31 36 38 2e 31 2e 31 30 32 00 29 1c 00 04 00 00 13

c4 29 23 00 08 38 36 32 33 30 30 31 00 29 25 00 0e 31

39 32 2e 31 36 38 2e 31 2e 31 30 32 00 29 26 00 04 00

00 13 c4 29 2d 00 08 38 36 32 33 30 30 31 00 29 2f 00

0d 31 39 32 2e 31 36 38 2e 31 2e 35 31 00 29 30 00 04

00 00 13 c4 29 33 00 01 01 27 18 00 09 02 00 00 00 07

86 23 00 10 27 17 00 07 02 00 07 86 23 00 00 27 94 00

04 c0 a8 01 33 27 95 00 04 00 00 7f a4 27 b0 00 02 00

02 27 b1 00 02 00 01 29 16 00 01 01 29 54 00 08 38 36

32 33 30 30 30 00 29 55 00 0e 31 39 32 2e 31 36 38 2e

31 2e 31 30 32 00 29 56 00 04 00 00 13 c4 29 50 00 31

30 30 30 33 36 62 33 63 2d 32 35 31 35 30 30 31 34 2d

34 64 38 37 30 36 61 63 2d 37 39 65 37 65 32 35 66 40

31 39 32 2e 31 36 38 2e 31 2e 35 31 00 29 53 00 02 01

00]

H->X

[00 0c 00 2d 00 02 00 00 01 0d 03 00 00 01]

X->H

[00 58 00 43 00 02 00 00 01 0d 03 00 00 01 00 a7 00 23 01 03

00 33 00 42 00 04 29 53 00 02 02 01 29 51 00 22 30 30

30 33 36 62 33 63 32 35 31 35 30 30 31 36 32 66 62 61

39 32 34 34 2d 37 36 38 39 65 31 38 37 00 29 52 00 08

32 37 38 36 32 39 61 00 2a 0e 00 04 c0 a8 01 33]

H->X

[00 05 00 43 00 02 00]

H->X

[00 71 00 2c 00 00 ff 00 01 0d 03 00 00 00 01 03 00 33

00 5f 00 09 27 7e 00 03 08 00 00 27 92 00 04 c0 a8 01

83 27 93 00 04 00 00 20 00 27 b0 00 02 01 02 27 b1 00

02 01 01 29 19 00 08 38 36 32 33 30 30 30 00 29 1b 00

0d 31 39 32 2e 31 36 38 2e 31 2e 31 31 00 29 23 00 08

38 36 32 33 30 30 31 00 29 25 00 0d 31 39 32 2e 31 36

38 2e 31 2e 35 31 00]

3 -SENT To 192.168.1.11:5060 at 667

INVITE sip:8623000@192.168.1.11:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.102

To: 8623000<sip:8623000@192.168.1.11:5060>

From: 8623001<sip:8623001@192.168.1.51:5060>;tag=1927207729b

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

Contact: 8623001<sip:8623001@192.168.1.102:5060>

User-Agent: Excel_CSP/83.10.57

Supported: timer

Session-Expires: 1800

Min-SE: 300

CSeq: 1 INVITE

Content-Type: application/sdp

Content-Length: 104

v=0

o=sip 0 0 IN IP4 192.168.1.102

s=SIP_Call

c=IN IP4 192.168.1.131

t=0 0

m=audio 8192 RTP/AVP 0

4 -RECEIVED From 192.168.1.11:5060 at 667

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1927207729b

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=3982133866

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

CSeq: 1 INVITE

Server: X-Lite release 1103m

Content-Length: 0

5 -RECEIVED From 192.168.1.11:5060 at 668

SIP/2.0 180 Ringing

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1927207729b

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=3982133866

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

CSeq: 1 INVITE

Server: X-Lite release 1103m

Content-Length: 0

X->H

[00 38 00 2c 00 00 00 00 10 01 03 00 33 00 2b 00 01 29 50 00

25 45 58 43 45 4c 2d 43 53 50 30 2e 37 38 37 2e 36 36

37 2e 39 31 30 40 31 39 32 2e 31 36 38 2e 31 2e 31 30

32 00]

X->H

[00 11 00 43 00 03 00 00 01 0d 03 00 00 00 00 a7 00 24 00]

H->X

[00 05 00 43 00 03 00]

H->X

[00 11 00 bf 00 00 ff 00 02 0d 03 00 00 01 0d 03 00 00

01]

6 -SENT To 192.168.1.51:5060 at 668

SIP/2.0 180 Ringing

To: <sip:8623000@192.168.1.102>;tag=278629a

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 101 INVITE

Contact: 8623000<sip:8623000@192.168.1.102:5060>

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK3fef366f

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

X->H

[00 07 00 bf 00 00 00 00 10]

7 -RECEIVED From 192.168.1.11:5060 at 669

SIP/2.0 200 Ok

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1927207729b

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=3982133866

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

CSeq: 1 INVITE

Content-Type: application/sdp

Server: X-Lite release 1103m

Content-Length: 298

v=0

o=8623000 283848162 283850034 IN IP4 192.168.1.11

s=X-Lite

c=IN IP4 192.168.1.11

t=0 0

m=audio 8000 RTP/AVP 0 8 3 98 97 101

a=rtpmap:0 pcmu/8000

a=rtpmap:8 pcma/8000

a=rtpmap:3 gsm/8000

a=rtpmap:98 iLBC/8000

a=rtpmap:97 speex/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

8 -SENT To 192.168.1.11:5060 at 669

ACK sip:8623000@192.168.1.11:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.102

To: 8623000<sip:8623000@192.168.1.11:5060>;tag=3982133866

From: 8623001<sip:8623001@192.168.1.51:5060>;tag=1927207729b

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

CSeq: 1 ACK

Content-Length: 0

X->H

[00 2e 00 43 00 04 00 00 01 0d 03 00 00 00 00 a7 00 20 01 03

00 33 00 18 00 03 27 94 00 04 c0 a8 01 0b 27 95 00 04

00 00 1f 40 27 b0 00 02 00 02]

H->X

[00 05 00 43 00 04 00]

X->H

[00 0d 00 2e 00 00 00 00 01 0d 03 00 00 00 20]

H->X

[00 05 00 2e 00 00 00]

H->X

[00 05 00 2e 00 00 00]

H->X

[00 11 00 00 00 00 ff 00 02 0d 03 00 00 01 0d 03 00 00

00]

X->H

[00 07 00 00 00 00 00 00 10]

H->X

[00 0d 00 ba 00 00 ff 00 01 0d 03 00 00 01 01]

X->H

[00 07 00 ba 00 00 00 00 10]

9 -SENT To 192.168.1.51:5060 at 670

SIP/2.0 200 OK

To: <sip:8623000@192.168.1.102>;tag=278629a

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 101 INVITE

Contact: 8623000<sip:8623000@192.168.1.102:5060>

Supported: timer

Session-Expires: 1800; refresher=uas

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK3fef366f

User-Agent: Excel_CSP/83.10.57

Content-Type: application/sdp

Content-Length: 144

v=0

o=sip 0 0 IN IP4 192.168.1.102

s=SIP_Call

c=IN IP4 192.168.1.131

t=0 0

m=audio 15740 RTP/AVP 0 101

a=rtpmap:101 telephone-event/8000

10-RECEIVED From 192.168.1.51:50606 at 670

ACK sip:8623000@192.168.1.102:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK6b2d2bc4

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

To: <sip:8623000@192.168.1.102>;tag=278629a

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 101 ACK

User-Agent: CSCO/7

Content-Length: 0

11-RECEIVED From 192.168.1.51:50606 at 675

BYE sip:8623000@192.168.1.102:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK16c337d6

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

To: <sip:8623000@192.168.1.102>;tag=278629a

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 102 BYE

User-Agent: CSCO/7

Content-Length: 0

X->H

[00 57 00 69 00 00 00 00 01 0d 03 00 00 01 02 02 1e 2a 00 05

01 04 00 04 00 00 00 00 01 05 00 04 00 00 00 eb 01 11

00 04 00 00 03 ce 01 10 00 04 00 00 92 e0 01 12 00 04

00 00 98 30 03 00 33 00 18 00 03 27 4e 00 02 00 10 27

92 00 04 c0 a8 01 83 27 93 00 04 00 00 3d 7c]

12-SENT To 192.168.1.11:5060 at 675

BYE sip:8623000@192.168.1.11:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.102

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=3982133866

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1927207729b

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

CSeq: 2 BYE

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

13-SENT To 192.168.1.51:5060 at 675

SIP/2.0 200 OK

To: <sip:8623000@192.168.1.102>;tag=278629a

From: "8623001" <sip:8623001@192.168.1.102>;tag=00036b3c251500162fba9244-7689e187

Call-ID: 00036b3c-25150014-4d8706ac-79e7e25f@192.168.1.51

CSeq: 102 BYE

Via: SIP/2.0/UDP 192.168.1.51:5060;branch=z9hG4bK16c337d6

User-Agent: Excel_CSP/83.10.57

Content-Length: 0

H->X

[00 05 00 69 00 00 00]

14-RECEIVED From 192.168.1.11:5060 at 675

SIP/2.0 200 Ok

Via: SIP/2.0/UDP 192.168.1.102

From: 8623001 <sip:8623001@192.168.1.51:5060>;tag=1927207729b

To: 8623000 <sip:8623000@192.168.1.11:5060>;tag=3982133866

Contact: <sip:8623000@192.168.1.11:5060>

Call-ID: EXCEL-CSP0.787.667.910@192.168.1.102

CSeq: 2 BYE

Server: X-Lite release 1103m

Content-Length: 0

X->H

[00 57 00 69 00 01 00 00 01 0d 03 00 00 00 02 02 1e 2a 00 05

01 04 00 04 00 00 00 00 01 05 00 04 00 00 00 00 01 11

00 04 00 00 04 34 01 10 00 04 00 00 00 00 01 12 00 04

00 00 a8 20 03 00 33 00 18 00 03 27 4e 00 02 00 10 27

92 00 04 c0 a8 01 83 27 93 00 04 00 00 20 00]

H->X

[00 05 00 69 00 01 00]