Call Flows

Overview

The following diagrams depict some of the basic SIP call flows. They are examples, not necessarily functional call flows.

The corresponding message traces follow some of the diagrams. These message traces include output from a protocol analyzer and examples of API messages.

Call Initiated by the Host and Released by the SIP Phone

 

Call Initiated by the Host and Released by the Host

Message Trace

H->X

00 4c 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 1d 00 03 27 7e 00 03 08 01 00 27 17 00 05 10 00 04 36 38 27 18 00 07 10 00 00 00 04 34 56

 

Send

INVITE sip:3638@10.10.65.135:5060 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.20

To: 3638<sip:3638@10.10.65.135:5060>

From: 3456<sip:3456@10.10.65.20:5060>;tag=60722970

Contact: 3456<sip:3456@10.10.65.20:5060>

User-Agent: Excel/8.0.108

Call-ID: Excel-CSP255.25f.102694.200@10.10.65.20

Cseq: 1 INVITE

Content-Type: Application/SDP

Content-length: 143

 

v=0

o=sip 102894 102894 IN IP4 10.10.65.20

s=SIP_Call

c=IN IP4 10.10.65.101

t=2209091494 0

m=audio 10428 RTP/AVP 0

a=rtpmap:0 PCMU/8000

 

Received

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 10.10.65.20

Call-ID: Excel-CSP255.25f.102694.200@10.10.65.20

CSeq:1 INVITE

t:3638<sip:3638@10.10.65.135:5060>;tag=7538-11854F:3456<sip:3456@10.10.65.20:5060>;tag=60722970Server:3Com ICD 0.10.1.84.14m:<sip:3638@10.10.65.135>L: 0

Received

SIP/2.0 180 Ringing

Via: SIP/2.0/UDP 10.10.65.20Call-ID: Excel-CSP255.25f.102694.200@10.10.65.20CSeq:1 INVITE

t:3638<sip:3638@10.10.65.135:5060>;tag=7538-11854F:3456<sip:3456@10.10.65.20:5060>;tag=60722970Server:3Com ICD 0.10.1.84.14m:<sip:3638@10.10.65.135>L: 0

 

Send RouteCtrl ACK

X->H

00 14 00 e8 00 00 ff 00 10 01 02 1e 09 00 01 00 39 00 03 00 01 07

 

Received

SIP/2.0 200 OK

Via: SIP/2.0/UDP 10.10.65.20

Call-ID: EXCEL-CSP255.25f.102694.200@10.10.65.20

CSeq:1 INVITE

t:3638<sip:3638@10.10.65.135:5060>;tag=7538-11854

F:3456<sip:3456@10.10.65.20:5060>;tag=60722970

Server:3Com ICD 0.10.1.84.14

m:<sip:3638@10.10.65.135>

L: 99

c: application/sdp

 

v=0

o=username 0 0 IN IP4 10.10.65.135s=c=IN IP4 10.10.65.135t=0 0m=audio 5148 RTP/AVP 0

Send

ACK sip:3638@10.10.65.135:5060 SIP/2.0Via: SIP/2.0/UDP 10.10.65.20To: 3638<sip:3638@10.10.65.135:5060>;tag=7538-11854From: 3456<sip:3456@10.10.65.20:5060>;tag=60722970Call-ID: EXCEL-CSP255.25f.102694.200@10.10.65.20Cseq: 1 ACKContent-Length: 0

Inform host of answer

X->H

00 0d 00 2e 00 00 ff 00 01 0d 03 00 01 06 20

 

Disconnecting call:

Received

BYE sip:3456@10.10.65.20:5060 SIP/2.0

v:SIP/2.0/UDP 10.10.65.135

i:EXCEL-CSP255.25f.102694.200@10.10.65.20

CSeq:12703 BYE

m:<sip:3638@10.10.65.135>

User-Agent:3Com ICD 0.10.1.84.14

f:3638<sip:3638@10.10.65.135:5060>;tag=7538-11854

t:3456<sip:3456@10.10.65.20:5060>;tag=60722970

L: 0

Send

SIP/2.0 100 Trying To: 3456<sip:3456@10.10.65.20:5060>;tag=60722970From: 3638<sip:3638@10.10.65.135:5060>;tag=7538-11854Call-ID: EXCEL-CSP255.25f.102694.200@10.10.65.20CSeq: 12703 BYEVia: SIP/2.0/UDP 10.10.65.135User-Agent: Excel/8.0.108Content-Length: 0

Send

SIP/2.0 200 OK

To: 3456<sip:3456@10.10.65.20:5060>;tag=60722970

From: 3638<sip:3638@10.10.65.135:5060>;tag=7538-11854

Call-ID: EXCEL-CSP255.25f.102694.200@10.10.65.20

CSeq: 12703 BYE

Via: SIP/2.0/UDP 10.10.65.135

User-Agent: Excel/8.0.108

Content-Length: 0

Send Channel Release with Data

X->H

00 57 00 69 00 08 ff 00 01 0d 03 00 01 06 02 02 1e 2a 00 05 01 04 00 04 ff ff ff ff 01 05 00 04 00 00 02 30 01 11 00 04 00 00 07 a7 01 10 00 04 00 01 5e 00 01 12 00 04 00 05 24 34 03 00 33 00 18 00 03 27 4e 00 02 00 10 27 92 00 04 0a 0a 41 65 27 93 00 04 00 00 28 9c

 

X->H

00 57 00 69 00 09 ff 00 01 0d 03 00 01 07 02 02 1e 2a 00 05 01 04 00 04 ff ff ff ff 01 05 00 04 00 00 02 d9 01 11 00 04 00 00 02 d5 01 10 00 04 00 01 c7 a0 01 12 00 04 00 01 e7 1c 03 00 33 00 18 00 03 27 4e 00 02 00 10 27 92 00 04 0a 0a 41 65 27 93 00 04 00 00 28 bc

 

 

 

Call Initiated by the SIP Phone

 

SIP-to-PSTN Call

Message Trace

Received

INVITE sip:3638@10.10.65.20 SIP/2.0

v:SIP/2.0/UDP 10.10.65.137

i:5577029142@10.10.65.137

CSeq:16868 INVITE

m:<sip:3456@10.10.65.137>User-Agent:3Com ICD 0.10.1.84.14

f: <sip:3456@10.10.65.20>;tag=12830-7774

t: <sip:3638@10.10.65.20>

L: 99

c: application/sdp

v=0

o=username 0 0 IN IP4 10.10.65.137

s=

c=IN IP4 10.10.65.137

t=0 0

m=audio 6614 RTP/AVP 0

Send

SIP/2.0 100 Trying To: <sip:3638@10.10.65.20>;tag=11800From: <sip:3456@10.10.65.20>;tag=12830-7774Call-ID: 5577029142@10.10.65.137CSeq: 16868 INVITEContact: 3638<sip:3638@10.10.65.20:5060>Via: SIP/2.0/UDP 10.10.65.137

User-Agent: Excel/8.0.108

Content-Length: 0

Send Request For Service (RFS) to Host

X->H

00 55 00 2d 00 03 ff 00 01 0d 03 00 01 06 00 33 01 03 00 33 00 41 00 08 27 4e 00 02 00 05 27 7e 00 03 08 00 00 27 18 00 08 04 00 00 00 05 13 45 60 27 17 00 06 04 00 05 13 63 80 27 94 00 04 0a 0a 41 89 27 95 00 04 00 00 19 d6 27 b0 00 02 00 01 27 b1 00 02 00 01

 

Park channel

H->X

00 11 00 bf 00 00 ff 00 02 0d 03 00 01 06 0d 03 00 01 06

 

X->H

00 07 00 bf 00 01 ff 00 10

 

Send

SIP/2.0 180 Ringing To: <sip:13638@10.10.65.20>;tag=11800From: <sip:13456@10.10.65.20>;tag=12830-7774Call-ID: 5577029142@10.10.65.137CSeq: 16868 INVITEContact: 3638<sip:13638@10.10.65.20:5060>Via: SIP/2.0/UDP 10.10.65.137User-Agent: Excel/8.0.108Content-Length: 0

Connect Channels

H->X


Authenticating an Incoming Call

 

Message Trace

The following is the matrix trace of both the host and SIP messages for a call being authenticated by the host using the Digest scheme.

Step 1. The Excel platform sends the RFS message to the Host

X->H

00 a6 00 2d 00 07 ff 00 01 0d 03 00 01 02 00 33 01 03 00 33 00 92 00 0f 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29 19 00 05 35 35 35 35 00 29 1b 00 0c 31 30 2e 31 30 2e 36 35 2e 32 30 00 29 23 00 05 33 33 33 33 00 29 25 00 0c 31 30 2e 31 30 2e 36 35 2e 32 30 00 27 18 00 07 02 00 00 00 04 33 33 27 17 00 05 02 00 04 55 55 27 94 00 04 0a 0a 41 25 27 95 00 04 00 00 53 74 27 b0 00 02 00 02 27 b1 00 02 00 01 29 2d 00 05 33 33 33 33 00 29 2f 00 0c 31 30 2e 31 30 2e 36 35 2e 33 37 00 29 30 00 04 00 00 13 c4

 

Step 2. The host wants to authenticate the request using the following variables:

Scheme - Digest


 

Realm - Excel

Username - 3333

Passwd - 1234

H->X

00 3a 00 44 00 00 ff 00 01 0d 03 00 01 08 00 a7 00 0c 01 03 00 33 00 24 00 04 29 37 00 01 01 29 38 00 07 6c 75 63 65 6e 74 00 29 39 00 05 33 33 33 33 00 29 3a 00 05 31 32 33 34 00

 

Step 3. The Excel platform validates the response and sends positive acknowledgment

 

X->H

00 07 00 44 00 00 ff 00 10

 

 

SIP Message Traces.

Initial INVITE

INVITE sip:5555@10.10.65.20 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.37:5060

From: "User id" <sip:3333@10.10.65.20>

To: <sip:5555@10.10.65.20>

Call-ID: c3943000-8507c6-9e2085e-312e3031@10.10.65.37

CSeq: 101 INVITE

Expires: 180

User-Agent: Cisco IP Phone/ Rev. 1/ SIP enabled

Accept: application/sdp

Contact: sip:3333@10.10.65.37:5060

Content-Type: application/sdp

Content-Length: 222

 

v=0

o=CiscoSystemsSIP-IPPhone-UserAgent 17834 18850 IN IP4 10.10.65.37

s=SIP Call

c=IN IP4 10.10.65.37

t=0 0

m=audio 18526 RTP/AVP 0 8 18 101

 

Sent To 10.10.65.37:5060

SIP/2.0 100 Trying

To: <sip:5555@10.10.65.20>;tag=42945f60

From: "User id" <sip:3333@10.10.65.20>

Call-ID: c3943000-8507c6-9e2085e-312e3031@10.10.65.37

CSeq: 101 INVITE

Contact: 5555<sip:5555@10.10.65.20:5060>

Via: SIP/2.0/UDP 10.10.65.37:5060

User-Agent: Excel/80.60.142

Content-Length: 0

 

PPL Event Request triggers the following response by CSP

 

Sent To 10.10.65.37:5060

SIP/2.0 401 Unauthorized

To: <sip:5555@10.10.65.20>;tag=42945f60

From: "User id" <sip:3333@10.10.65.20>

Call-ID: c3943000-8507c6-9e2085e-312e3031@10.10.65.37

CSeq: 101 INVITE

WWW-Authenticate: Digest realm="excel", nonce="386d4e78287010c6000", opaque="as

op6474294asdfj"

Via: SIP/2.0/UDP 10.10.65.37:5060

User-Agent: Excel/80.60.142

Content-Length: 0

 

ACK sip:5555@10.10.65.20 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.37:5060

From: "User id" <sip:3333@10.10.65.20>

To: <sip:5555@10.10.65.20>;tag=42945f60

Call-ID: c3943000-8507c6-9e2085e-312e3031@10.10.65.37

CSeq: 101 ACK

Content-Length: 0

 

 

Remote SIP phone sends a re-INVITE with Authorization header

Received From 10.10.65.37:50787

INVITE sip:5555@10.10.65.20 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.37:5060

From: "User id" <sip:3333@10.10.65.20>

To: <sip:5555@10.10.65.20>

Call-ID: c3943000-8507c6-9e2085e-312e3031@10.10.65.37

User-Agent: Cisco IP Phone/ Rev. 1/ SIP enabled

CSeq: 102 INVITE

Contact: sip:3333@10.10.65.37:5060

Content-Type: application/sdp

Content-Length: 222

Authorization: Digest username="3333",realm="excel",uri="sip:10.10.65.20",respo

nse="4ffe5412565eaa044e2ec1d4ad0d5d10",nonce="386d4e78287010c6000",opaque="asop6

474294asdfj",algorithm=md5

 

v=0

o=CiscoSystemsSIP-IPPhone-UserAgent 25107 25441 IN IP4 10.10.65.37

s=SIP Call

c=IN IP4 10.10.65.37

t=0 0

m=audio 18526 RTP/AVP 0 8 18 101

 

CSP validates the response and send PPLEventRequest ACK
to host.


Authenticating an Outbound Call

Matrix Trace

H->X

[00 80 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 51 00 09 27 7e 00

03 08 01 00 29 37 00 01 00 29 38 00 07 6c 75 63 65 6e

74 00 29 19 00 05 33 33 33 33 00 29 1b 00 0b 31 30 2e

31 30 2e 36 35 2e 32 00 29 23 00 05 33 36 33 38 00 29

3b 00 05 33 36 33 38 00 29 3c 00 05 31 32 33 34 00 29

14 00 01 00]

X->H

[00 14 00 e8 00 00 ff 00 10 01 02 1e 09 00 01 00 39 00 03 00

01 03]

 

CSP uses '3638' as username and '1234' as password to generate the authorized request.

SIP Message Trace

 

Step 1. Initial INVITE from Excel platform to remote IP

INVITE sip:3333@10.10.65.2:5060 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.20

To: 3333<sip:3333@10.10.65.2:5060>

From: 3638<sip:3638@10.10.65.20:5060>;tag=51939517b88

Call-ID: EXCEL-CSP255.207.97160.920@10.10.65.20

Contact: 3638<sip:3638@10.10.65.20:5060>

User-Agent: Excel/80.60.142

Supported: timer

Session-Timer: 1800

Min-SE: 300

CSeq: 1 INVITE

Content-Type: application/SDP

Content-Length: 141

 

v=0

o=sip 96272 96272 IN IP4 10.10.65.20

s=SIP_Call

c=IN IP4 10.10.65.101

t=2209085960 0

m=audio 10076 RTP/AVP 0

Step 2. Remote IP requests Authentication

SIP/2.0 401 Unauthorized

From: 3638<sip:3638@10.10.65.20:5060>;tag=51939517b88

To: 3333<sip:3333@10.10.65.2:5060>

Call-Id: EXCEL-CSP255.207.97160.920@10.10.65.20

Cseq: 1 INVITE

Via: SIP/2.0/UDP 10.10.65.20

Www-Authenticate: Digest REALM="excel", NONCE="1234567890", OPAQUE="abcdefghij"

Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY

User-Agent: Pingtel/1.2.0 (WinNT)

Content-Length: 0

 

Step 3. Excel platform Acknowledges

ACK sip:3333@10.10.65.2:5060 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.20

Call-ID: EXCEL-CSP255.207.97160.920@10.10.65.20

CSeq: 1 ACK

To: 3333<sip:3333@10.10.65.2:5060>

From: 3638<sip:3638@10.10.65.20:5060>;tag=51939517b88

Content-Length: 0

 

Step 4. Excel platform Retries with Authorization Header

INVITE sip:3333@10.10.65.2:5060 SIP/2.0

Via: SIP/2.0/UDP 10.10.65.20

To: 3333<sip:3333@10.10.65.2:5060>

From: 3638<sip:3638@10.10.65.20:5060>;tag=51939517b88

Call-ID: EXCEL-CSP255.207.97160.920@10.10.65.20

CSeq: 2 INVITE

User-Agent: Excel/80.60.142

Contact: 3638<sip:3638@10.10.65.20:5060>

Authorization: Digest realm="excel", nonce="1234567890", opaque="abcdefghij", username="3638", response="604e036d948d2c8df8e8777aba0ab56b", uri="sip:3333@10.10.65.2:5060"

Supported: timer

Session-Timer: 1800

Min-SE: 300

Content-Type: application/SDP

Content-Length: 141

 

v=0

o=sip 97185 97185 IN IP4 10.10.65.20

s=SIP_Call

c=IN IP4 10.10.65.101

t=2209085961 0

m=audio 10076 RTP/AVP 0

 

Step 5. Remote IP accepts the request

SIP/2.0 200 OK

From: 3638<sip:3638@10.10.65.20:5060>;tag=51939517b88

To: 3333<sip:3333@10.10.65.2:5060>;tag=29358

Call-Id: EXCEL-CSP255.207.97160.920@10.10.65.20

Cseq: 2 INVITE

Content-Type: application/sdp

Content-Length: 128

Via: SIP/2.0/UDP 10.10.65.20

Contact: sip:3333@10.10.65.2

Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY

User-Agent: Pingtel/1.2.0 (WinNT)

 

v=0

o=Pingtel 5 5 IN IP4 10.10.65.2

s=phone-call

c=IN IP4 10.10.65.2

t=0 0

m=audio 8766 RTP/AVP 0

a=rtpmap:0 pcmu/8000/

Early Media

Inbound Call - Initiated by Host

In the following call flow, the host can use PPL Event Request (event id 31) to initiate early media.

 

Example: For Bearer On Call:

X->H - 00 11 00 44 00 02 ff 00 01 0d 03 00 00 00 00 a7 00 1f 00

 

Example: For Bearer Off Call:

X->H

00 3f 00 44 00 06 ff 00 01 0d 03 00 07 01 00 a7 00 1f 01 03
00 33 00 29 00 01 29 ff 00 23 2a 0e 00 04 0a 0a 41 87
2a 01 00 17 2a 03 00 01 00 2a 07 00 04 00 00 15 a0 2a
02 00 06 2a 08 00 02 00 02

Outbound Calls

For outbound calls, the Excel platform detects early media when it receives the 183 response with the Session Description Protocol (SDP) from the host.

The SIP layer would inform early media detection to host via PPL Event Indication (Event ID 31) and send the internal Call Progress message.

 

Example:


X ->H

00 3f 00 43 00 06 ff 00 01 0d 03 00 07 01 00 a7 00 1f 01 03
00 33 00 29 00 01 29 ff 00 23 2a 0e 00 04 0a 0a 41 87
2a 01 00 17 2a 03 00 01 00 2a 07 00 04 00 00 15 a0 2a
02 00 06 2a 08 00 02 00 02

The following is a typical 183 response message:

SIP/2.0 183 Session Progress

To: <sip:4566@10.10.65.20>;tag=414327a01

From: "User id" <sip:36388@10.10.65.20>

Call-ID: c3943000-22807c6-2737ef30-312e3031@10.10.65.137

CSeq: 101 INVITE

Contact: 4566<sip:4566@10.10.65.20:5060>

Via: SIP/2.0/UDP 10.10.65.137:5060

User-Agent: Excel/80.60.133

Content-Type: application/SDP

Content-Length: 143

 

v=0

o=sip 162471 162471 IN IP4 10.10.65.20

s=SIP_Call

c=IN IP4 10.10.65.101

t=2209151129 0

m=audio 10844 RTP/AVP 0

a=rtpmap:0 PCMU/8000

Delayed Media

Most Common Scenario

The following call flow depicts the most common delayed media scenario. The initial INVITE message might contain a NULL SDP. That is, the 0.0.0.0 is used for the IP address field.

No SDP in INVITE message

In the following example, there is no Session Description Protocol (SDP) in the INVITE message but it is in the acknowledgment message. This scenario is not supported for bearer-free calls.

Detailed Call Flows

The following two call flow diagrams show the detail of an SS7 to SIP call and a SIP to SS7 call. These call flow diagrams show some of the differences between TDM calls and IP calls which are intended to help customers making the migration from the TDM environment to the IP environment.

SS7 to SIP

The Route Control message is required to generate VoIP calls and is equivalent to the Outseize Control message.

The 200 OK message is automatically generated if the Answer Supervision Mode message is set to Propagate Answer. Otherwise, when the host sends the answer, you can generate the 200 OK message using the Generate Call Processing Event message.

SIP to SS7

The 180 Ringing message is automatically generated when the SIP channel is connected or parked.

The 183 Session Progress message is generated by the PPL Event Request message (Early Media).

Refer and Notify Methods - Call Flow

The examples below of the Refer and Notify methods include the following:

Three SIP phones

An Excel platform

A Host Application controlling the Refer method processing.

The addresses are as follows:

transferee

32@135.119.42.100

 

transferrer

30@135.119.42.100

 

transfer target

 

31@135.119.42.100

 

Refer-To Header

The Refer-To header can have three types of syntax as shown in the examples below.

 

Refer-To: sip:300@172.27.4.67:5060

Refer-To: <sip:300@172.27.4.67:5060>

Refer-To: 300 <sip:300@172.27.4.67:5060>

All three types of syntax are supported by the SIP software.

Host Controlled Blind Refer

The following are the host messages:

 

X->H
[00 9f 00 2d 00 00 01 00 01 0d 03 00 01 00 00 33 01 03 00 33
00 8b 00 0e 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29
19 00 03 33 30 00 29 1b 00 0f 31 33 35 2e 31 31 39 2e
34 32 2e 31 30 30 00 29 23 00 03 33 32 00 29 25 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 30 30 00 27 18 00
06 02 00 00 00 02 32 27 17 00 04 02 00 02 30 27 94 00
04 87 77 2a 7a 27 95 00 04 00 00 12 30 27 b0 00 02 00
02 27 b1 00 02 00 01 29 2d 00 03 33 32 00 29 2f 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 32 32 00]


H->X
[00 0c 00 2d 00 00 01 00 01 0d 03 00 01 00]

H->X
[00 11 00 bf 00 00 ff 00 02 0d 03 00 01 00 0d 03 00 01
00]

X->H
[00 07 00 bf 00 00 01 00 10]

H->X
[00 40 00 e8 00 01 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 11 00 02 27 7e 00
03 08 01 00 27 17 00 04 10 00 02 30]

X->H
[00 14 00 e8 00 01 01 00 10 01 02 1e 09 00 01 00 39 00 03 00
01 01]

H->X
[00 11 00 00 00 02 ff 00 02 0d 03 00 01 00 0d 03 00 01
01]

X->H
[00 07 00 00 00 02 01 00 10]

H->X
[00 0e 00 ba 00 03 ff 00 01 0d 03 00 01 00 01 00]

X->H
[00 07 00 ba 00 03 01 00 10]

X->H
[00 2e 00 43 00 00 01 00 01 0d 03 00 01 01 00 a7 00 1e 01 03
00 33 00 18 00 03 27 94 00 04 00 00 00 00 27 95 00 04
00 00 22 3e 27 b0 00 02 00 02]

H->X
[00 05 00 43 00 00 01]

X->H
[00 9f 00 2d 00 01 01 00 01 0d 03 00 01 02 00 33 01 03 00 33
00 8b 00 0e 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29
19 00 03 33 31 00 29 1b 00 0f 31 33 35 2e 31 31 39 2e
34 32 2e 31 30 30 00 29 23 00 03 33 30 00 29 25 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 30 30 00 27 18 00
06 02 00 00 00 02 30 27 17 00 04 02 00 02 31 27 94 00
04 87 77 2a 78 27 95 00 04 00 00 22 40 27 b0 00 02 00
02 27 b1 00 02 00 01 29 2d 00 03 33 30 00 29 2f 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 32 30 00]

H->X
[00 0c 00 2d 00 01 01 00 01 0d 03 00 01 02]

X->H
[00 0c 00 49 00 00 01 00 01 0d 03 00 01 02]

H->X
[00 05 00 49 00 00 01]

X->H
[00 32 00 43 00 01 01 00 01 0d 03 00 01 01 00 a7 00 21 01 03
00 33 00 1c 00 02 29 19 00 03 33 31 00 29 1b 00 0f 31
33 35 2e 31 31 39 2e 34 32 2e 31 30 30 00]

H->X
[00 05 00 43 00 01 01]

H->X
[00 4f 00 e8 00 04 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 20 00 03 27 7e 00
03 08 01 00 29 19 00 03 33 31 00 29 1b 00 0c 31 30 2e
31 30 2e 31 32 2e 33 32 00]

X->H
[00 14 00 e8 00 04 01 00 10 01 02 1e 09 00 01 00 39 00 03 00
01 03]

H->X
[00 11 00 00 00 05 ff 00 02 0d 03 00 01 00 0d 03 00 01
03]

X->H
[00 07 00 00 00 05 01 00 10]

H->X
[00 1e 00 44 00 06 ff 00 01 0d 03 00 01 01 00 a7 00 20
01 03 00 33 00 08 00 01 29 4b 00 02 00 c8]

X->H
[00 07 00 44 00 06 01 00 10]

 

The following are the SIP Messages:


3 -RECEIVED From 135.119.42.122:5060 at 103
INVITE sip:30@135.119.42.100 SIP/2.0
v:SIP/2.0/UDP 135.119.42.122
i:2346755625@135.119.42.122
CSeq:56852 INVITE
m:<sip:32@135.119.42.122>
User-Agent:3Com ICD 0.10.1.84.14
f: <sip:32@135.119.42.100>;tag=32724-9149
t: <sip:30@135.119.42.100>
L: 103
c: application/sdp

v=0
o=username 0 0 IN IP4 135.119.42.122
s=
c=IN IP4 135.119.42.122
t=0 0
m=audio 4656 RTP/AVP 0

4 -SENT To 135.119.42.122:5060 at 103
SIP/2.0 100 Trying
To: <sip:30@135.119.42.100>;tag=735667
From: <sip:32@135.119.42.100>;tag=32724-9149
Call-ID: 2346755625@135.119.42.122
CSeq: 56852 INVITE
Contact: 30<sip:30@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.122
User-Agent: Excel/82.0.16
Content-Length: 0


5 -SENT To 135.119.42.122:5060 at 103
SIP/2.0 180 Ringing
To: <sip:30@135.119.42.100>;tag=735667
From: <sip:32@135.119.42.100>;tag=32724-9149
Call-ID: 2346755625@135.119.42.122
CSeq: 56852 INVITE
Contact: 30<sip:30@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.122
User-Agent: Excel/82.0.16
Content-Length: 0


6 -SENT To 135.119.42.120:5060 at 103
INVITE sip:30@135.119.42.120:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 30<sip:30@135.119.42.120:5060>
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
Contact: 00000000<sip:00000000@135.119.42.100:5060>
User-Agent: Excel/82.0.16
Supported: timer
Session-Expires: 1800
Min-SE: 300
CSeq: 1 INVITE
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10111 10111 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10108 RTP/AVP 0
a=rtpmap:0 PCMU/8000

7 -RECEIVED From 135.119.42.120:1033 at 104
SIP/2.0 100 Trying
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
To: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 1 INVITE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


8 -RECEIVED From 135.119.42.120:1033 at 104
SIP/2.0 180 Ringing
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
To: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 1 INVITE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


9 -SENT To 135.119.42.122:5060 at 106
SIP/2.0 200 OK
To: <sip:30@135.119.42.100>;tag=735667
From: <sip:32@135.119.42.100>;tag=32724-9149
Call-ID: 2346755625@135.119.42.122
CSeq: 56852 INVITE
Contact: 30<sip:30@135.119.42.100:5060>
Supported: timer
Session-Expires: 1800; refresher=uas
Via: SIP/2.0/UDP 135.119.42.122
User-Agent: Excel/82.0.16
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10079 10079 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10076 RTP/AVP 0
a=rtpmap:0 PCMU/8000

10-RECEIVED From 135.119.42.122:5060 at 106
ACK sip:30@135.119.42.100:5060 SIP/2.0
v:SIP/2.0/UDP 135.119.42.122
i:2346755625@135.119.42.122
CSeq:56852 ACK
m:<sip:32@135.119.42.122>
User-Agent:3Com ICD 0.10.1.84.14
f: <sip:32@135.119.42.100>;tag=32724-9149
t:<sip:30@135.119.42.100>;tag=735667
L: 0


11-RECEIVED From 135.119.42.120:1033 at 106
SIP/2.0 200 OK
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
To: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 1 INVITE
Content-Type: application/sdp
Content-Length: 136
Via: SIP/2.0/UDP 135.119.42.100
Session-Expires: 1800
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)

v=0
o=Pingtel 5 5 IN IP4 135.119.42.120
s=phone-call
c=IN IP4 135.119.42.120
t=0 0
m=audio 8766 RTP/AVP 0
a=rtpmap:0 pcmu/8000/1

12-SENT To 135.119.42.120:5060 at 106
ACK sip:30@135.119.42.120:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 30<sip:30@135.119.42.120:5060>;tag=16254
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 1 ACK
Content-Length: 0


13-RECEIVED From 135.119.42.120:1033 at 106
OPTIONS sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=16254
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 1 OPTIONS
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


14-SENT To 135.119.42.120:5060 at 106
SIP/2.0 200 OK
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
From: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 1 OPTIONS
Supported: timer
Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, REGISTER, REFER, NOTIFY
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


15-RECEIVED From 135.119.42.120:1033 at 112
INVITE sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=16254
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 2 INVITE
Contact: sip:30@135.119.42.120
Content-Type: application/sdp
Content-Length: 187
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120

v=0
o=Pingtel 5 5 IN IP4 0.0.0.0
s=phone-call
c=IN IP4 0.0.0.0
t=0 0
m=audio 8766 RTP/AVP 0 96 8
a=rtpmap:0 pcmu/8000/1
a=rtpmap:96 telephone-event/8000/1
a=rtpmap:8 pcma/8000/1

16-SENT To 135.119.42.120:5060 at 112
SIP/2.0 100 Trying
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
From: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 2 INVITE
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


17-SENT To 135.119.42.120:5060 at 112
SIP/2.0 200 OK
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
From: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 2 INVITE
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Supported: timer
Session-Expires: 1800; refresher=uas
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10111 10111 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10108 RTP/AVP 0
a=rtpmap:0 PCMU/8000

18-RECEIVED From 135.119.42.120:1033 at 113
INVITE sip:31@135.119.42.100 SIP/2.0
From: sip:30@135.119.42.100;tag=2c13488
To: sip:31@135.119.42.100
Call-Id: call-1023303432-8@135.119.42.120
Cseq: 1 INVITE
Contact: sip:30@135.119.42.120
Content-Type: application/sdp
Content-Length: 201
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120

v=0
o=Pingtel 5 5 IN IP4 135.119.42.120
s=phone-call
c=IN IP4 135.119.42.120
t=0 0
m=audio 8768 RTP/AVP 0 96 8
a=rtpmap:0 pcmu/8000/1
a=rtpmap:96 telephone-event/8000/1
a=rtpmap:8 pcma/8000/1

19-SENT To 135.119.42.120:5060 at 113
SIP/2.0 100 Trying
To: sip:31@135.119.42.100;tag=442571
From: sip:30@135.119.42.100;tag=2c13488
Call-ID: call-1023303432-8@135.119.42.120
CSeq: 1 INVITE
Contact: 31<sip:31@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


20-RECEIVED From 135.119.42.120:1033 at 113
ACK sip:00000000@135.119.42.100:5060 SIP/2.0
Contact: sip:30@135.119.42.120
From: 30<sip:30@135.119.42.120:5060>;tag=16254
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 2 ACK
Session-Expires: 1800
Accept-Language: en
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


21-RECEIVED From 135.119.42.120:1033 at 114
CANCEL sip:31@135.119.42.100 SIP/2.0
From: sip:30@135.119.42.100;tag=2c13488
To: sip:31@135.119.42.100
Call-Id: call-1023303432-8@135.119.42.120
Cseq: 1 CANCEL
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


22-SENT To 135.119.42.120:5060 at 114
SIP/2.0 487 Request Terminated
To: sip:31@135.119.42.100;tag=442571
From: sip:30@135.119.42.100;tag=2c13488
Call-ID: call-1023303432-8@135.119.42.120
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


23-SENT To 135.119.42.120:5060 at 114
SIP/2.0 200 OK
To: sip:31@135.119.42.100;tag=442571
From: sip:30@135.119.42.100;tag=2c13488
Call-ID: call-1023303432-8@135.119.42.120
CSeq: 1 CANCEL
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


24-RECEIVED From 135.119.42.120:1033 at 114
ACK sip:31@135.119.42.100 SIP/2.0
From: sip:30@135.119.42.100;tag=2c13488
To: sip:31@135.119.42.100;tag=442571
Call-Id: call-1023303432-8@135.119.42.120
Cseq: 1 ACK
Accept-Language: en
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


25-RECEIVED From 135.119.42.120:1033 at 115
REFER sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=16254
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 3 REFER
Contact: sip:30@135.119.42.120
Referred-By: 30<sip:30@135.119.42.120:5060>; ref=<sip:31@135.119.42.100>
Refer-To: sip:31@135.119.42.100
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


26-SENT To 135.119.42.120:5060 at 115
SIP/2.0 202
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
From: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 3 REFER
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


27-SENT To 135.119.42.121:5060 at 115
INVITE sip:31@135.119.42.121:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 31<sip:31@10.10.12.32:5060>
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=543114973
Call-ID: EXCEL-CSP1.21f.115.640@135.119.42.100
Contact: 00000000<sip:00000000@135.119.42.100:5060>
User-Agent: Excel/82.0.16
Supported: timer
Session-Expires: 1800
Min-SE: 300
CSeq: 1 INVITE
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10175 10175 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10172 RTP/AVP 0
a=rtpmap:0 PCMU/8000

28-RECEIVED From 135.119.42.121:5060 at 115
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 135.119.42.100
Call-ID: EXCEL-CSP1.21f.115.640@135.119.42.100
CSeq:1 INVITE
t:31<sip:31@10.10.12.32:5060>;tag=13359-32489
F:00000000<sip:00000000@135.119.42.100:5060>;tag=543114973
Server:3Com ICD 0.10.1.84.14
m:<sip:31@135.119.42.121>
L: 0


29-RECEIVED From 135.119.42.121:5060 at 116
SIP/2.0 200 OK
Via: SIP/2.0/UDP 135.119.42.100
Call-ID: EXCEL-CSP1.21f.115.640@135.119.42.100
CSeq:1 INVITE
t:31<sip:31@10.10.12.32:5060>;tag=13359-32489
F:00000000<sip:00000000@135.119.42.100:5060>;tag=543114973
Server:3Com ICD 0.10.1.84.14
m:<sip:31@135.119.42.121>
L: 103
c: application/sdp

v=0
o=username 0 0 IN IP4 135.119.42.121
s=
c=IN IP4 135.119.42.121
t=0 0
m=audio 5096 RTP/AVP 0

30-SENT To 135.119.42.121:5060 at 116
ACK sip:31@135.119.42.121:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 31<sip:31@10.10.12.32:5060>;tag=13359-32489
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=543114973
Call-ID: EXCEL-CSP1.21f.115.640@135.119.42.100
CSeq: 1 ACK
Content-Length: 0


31-SENT To 135.119.42.120:5060 at 116
NOTIFY sip:30@135.119.42.120:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 30<sip:30@135.119.42.120:5060>;tag=16254
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 1 NOTIFY
Event: refer
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Content-Type: message/sipfrag;version=2.0
Content-Length: 16

SIP/2.0 200 OK

32-RECEIVED From 135.119.42.120:1033 at 116
SIP/2.0 200 OK
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
To: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 1 NOTIFY
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


33-RECEIVED From 135.119.42.120:1033 at 116
BYE sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=16254
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
Call-Id: EXCEL-CSP1.20f.103.900@135.119.42.100
Cseq: 4 BYE
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


34-SENT To 135.119.42.120:5060 at 116
SIP/2.0 200 OK
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=52768267
From: 30<sip:30@135.119.42.120:5060>;tag=16254
Call-ID: EXCEL-CSP1.20f.103.900@135.119.42.100
CSeq: 4 BYE
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0

Host Controlled Consultive Refer

 

X->H
[00 9f 00 2d 00 02 01 00 01 0d 03 00 01 04 00 33 01 03 00 33
00 8b 00 0e 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29
19 00 03 33 30 00 29 1b 00 0f 31 33 35 2e 31 31 39 2e
34 32 2e 31 30 30 00 29 23 00 03 33 32 00 29 25 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 30 30 00 27 18 00
06 02 00 00 00 02 32 27 17 00 04 02 00 02 30 27 94 00
04 87 77 2a 7a 27 95 00 04 00 00 16 52 27 b0 00 02 00
02 27 b1 00 02 00 01 29 2d 00 03 33 32 00 29 2f 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 32 32 00]

H->X
[00 0c 00 2d 00 02 01 00 01 0d 03 00 01 04]

H->X
[00 11 00 bf 00 00 ff 00 02 0d 03 00 01 04 0d 03 00 01
04]

X->H
[00 07 00 bf 00 00 01 00 10]

H->X
[00 40 00 e8 00 01 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 11 00 02 27 7e 00
03 08 01 00 27 17 00 04 10 00 02 30]

X->H
[00 14 00 e8 00 01 01 00 10 01 02 1e 09 00 01 00 39 00 03 00
01 05]

H->X
[00 11 00 00 00 02 ff 00 02 0d 03 00 01 04 0d 03 00 01
05]

X->H
[00 07 00 00 00 02 01 00 10]

H->X
[00 0e 00 ba 00 03 ff 00 01 0d 03 00 01 04 01 00]

X->H
[00 07 00 ba 00 03 01 00 10]

X->H
[00 2e 00 43 00 02 01 00 01 0d 03 00 01 05 00 a7 00 1e 01 03
00 33 00 18 00 03 27 94 00 04 00 00 00 00 27 95 00 04
00 00 22 3e 27 b0 00 02 00 02]

H->X
[00 05 00 43 00 02 01]

X->H
[00 9f 00 2d 00 03 01 00 01 0d 03 00 01 06 00 33 01 03 00 33
00 8b 00 0e 27 4e 00 02 00 05 27 7e 00 03 08 00 00 29
19 00 03 33 31 00 29 1b 00 0f 31 33 35 2e 31 31 39 2e
34 32 2e 31 30 30 00 29 23 00 03 33 30 00 29 25 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 30 30 00 27 18 00
06 02 00 00 00 02 30 27 17 00 04 02 00 02 31 27 94 00
04 87 77 2a 78 27 95 00 04 00 00 22 40 27 b0 00 02 00
02 27 b1 00 02 00 01 29 2d 00 03 33 30 00 29 2f 00 0f
31 33 35 2e 31 31 39 2e 34 32 2e 31 32 30 00]

H->X
[00 0c 00 2d 00 03 01 00 01 0d 03 00 01 06]

H->X
[00 11 00 bf 00 04 ff 00 02 0d 03 00 01 06 0d 03 00 01
06]

X->H
[00 07 00 bf 00 04 01 00 10]

H->X
[00 40 00 e8 00 05 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 11 00 02 27 7e 00
03 08 01 00 27 17 00 04 10 00 02 31]

X->H
[00 14 00 e8 00 05 01 00 10 01 02 1e 09 00 01 00 39 00 03 00
01 07]

H->X
[00 11 00 00 00 06 ff 00 02 0d 03 00 01 06 0d 03 00 01
07]

X->H
[00 07 00 00 00 06 01 00 10]

H->X
[00 0e 00 ba 00 07 ff 00 01 0d 03 00 01 06 01 00]

X->H
[00 07 00 ba 00 07 01 00 10]

X->H
[00 2e 00 43 00 03 01 00 01 0d 03 00 01 06 00 a7 00 1e 01 03
00 33 00 18 00 03 27 94 00 04 00 00 00 00 27 95 00 04
00 00 22 40 27 b0 00 02 00 02]

H->X
[00 05 00 43 00 03 01]

X->H
[00 1f 00 43 00 04 01 00 01 0d 03 00 01 05 00 a7 00 20 01 03
00 33 00 09 00 01 29 4c 00 03 00 01 06]

H->X
[00 05 00 43 00 04 01]

H->X
[00 1e 00 44 00 08 ff 00 01 0d 03 00 01 05 00 a7 00 20
01 03 00 33 00 08 00 01 29 4b 00 02 00 c8]

X->H
[00 07 00 44 00 08 01 00 10]

H->X
[00 11 00 00 00 09 ff 00 02 0d 03 00 01 04 0d 03 00 01
07]

X->H
[00 07 00 00 00 09 01 00 10]


5 -RECEIVED From 135.119.42.122:5060 at 3093
INVITE sip:30@135.119.42.100 SIP/2.0
v:SIP/2.0/UDP 135.119.42.122
i:6514861550@135.119.42.122
CSeq:3218 INVITE
m:<sip:32@135.119.42.122>
User-Agent:3Com ICD 0.10.1.84.14
f: <sip:32@135.119.42.100>;tag=11357-12389
t: <sip:30@135.119.42.100>
L: 103
c: application/sdp

v=0
o=username 0 0 IN IP4 135.119.42.122
s=
c=IN IP4 135.119.42.122
t=0 0
m=audio 5714 RTP/AVP 0

6 -SENT To 135.119.42.122:5060 at 3093
SIP/2.0 100 Trying
To: <sip:30@135.119.42.100>;tag=7783c15
From: <sip:32@135.119.42.100>;tag=11357-12389
Call-ID: 6514861550@135.119.42.122
CSeq: 3218 INVITE
Contact: 30<sip:30@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.122
User-Agent: Excel/82.0.16
Content-Length: 0


7 -SENT To 135.119.42.122:5060 at 3094
SIP/2.0 180 Ringing
To: <sip:30@135.119.42.100>;tag=7783c15
From: <sip:32@135.119.42.100>;tag=11357-12389
Call-ID: 6514861550@135.119.42.122
CSeq: 3218 INVITE
Contact: 30<sip:30@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.122
User-Agent: Excel/82.0.16
Content-Length: 0


8 -SENT To 135.119.42.120:5060 at 3094
INVITE sip:30@135.119.42.120:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 30<sip:30@135.119.42.120:5060>
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
Contact: 00000000<sip:00000000@135.119.42.100:5060>
User-Agent: Excel/82.0.16
Supported: timer
Session-Expires: 1800
Min-SE: 300
CSeq: 1 INVITE
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10367 10367 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10364 RTP/AVP 0
a=rtpmap:0 PCMU/8000

9 -RECEIVED From 135.119.42.120:1033 at 3094
SIP/2.0 100 Trying
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
To: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 1 INVITE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


10-RECEIVED From 135.119.42.120:1033 at 3095
SIP/2.0 180 Ringing
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
To: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 1 INVITE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


11-SENT To 135.119.42.122:5060 at 3096
SIP/2.0 200 OK
To: <sip:30@135.119.42.100>;tag=7783c15
From: <sip:32@135.119.42.100>;tag=11357-12389
Call-ID: 6514861550@135.119.42.122
CSeq: 3218 INVITE
Contact: 30<sip:30@135.119.42.100:5060>
Supported: timer
Session-Expires: 1800; refresher=uas
Via: SIP/2.0/UDP 135.119.42.122
User-Agent: Excel/82.0.16
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10335 10335 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10332 RTP/AVP 0
a=rtpmap:0 PCMU/8000

12-RECEIVED From 135.119.42.122:5060 at 3096
ACK sip:30@135.119.42.100:5060 SIP/2.0
v:SIP/2.0/UDP 135.119.42.122
i:6514861550@135.119.42.122
CSeq:3218 ACK
m:<sip:32@135.119.42.122>
User-Agent:3Com ICD 0.10.1.84.14
f: <sip:32@135.119.42.100>;tag=11357-12389
t:<sip:30@135.119.42.100>;tag=7783c15
L: 0


13-RECEIVED From 135.119.42.120:1033 at 3097
SIP/2.0 200 OK
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
To: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 1 INVITE
Content-Type: application/sdp
Content-Length: 136
Via: SIP/2.0/UDP 135.119.42.100
Session-Expires: 1800
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)

v=0
o=Pingtel 5 5 IN IP4 135.119.42.120
s=phone-call
c=IN IP4 135.119.42.120
t=0 0
m=audio 8766 RTP/AVP 0
a=rtpmap:0 pcmu/8000/1

14-SENT To 135.119.42.120:5060 at 3097
ACK sip:30@135.119.42.120:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 30<sip:30@135.119.42.120:5060>;tag=18141
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 1 ACK
Content-Length: 0


15-RECEIVED From 135.119.42.120:1033 at 3097
OPTIONS sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=18141
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 1 OPTIONS
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


16-SENT To 135.119.42.120:5060 at 3097
SIP/2.0 200 OK
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
From: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 1 OPTIONS
Supported: timer
Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, REGISTER, REFER, NOTIFY
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


17-RECEIVED From 135.119.42.120:1033 at 3104
INVITE sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=18141
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 2 INVITE
Contact: sip:30@135.119.42.120
Content-Type: application/sdp
Content-Length: 187
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120

v=0
o=Pingtel 5 5 IN IP4 0.0.0.0
s=phone-call
c=IN IP4 0.0.0.0
t=0 0
m=audio 8766 RTP/AVP 0 96 8
a=rtpmap:0 pcmu/8000/1
a=rtpmap:96 telephone-event/8000/1
a=rtpmap:8 pcma/8000/1

18-SENT To 135.119.42.120:5060 at 3104
SIP/2.0 100 Trying
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
From: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 2 INVITE
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


19-SENT To 135.119.42.120:5060 at 3104
SIP/2.0 200 OK
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
From: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 2 INVITE
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Supported: timer
Session-Expires: 1800; refresher=uas
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10367 10367 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10364 RTP/AVP 0
a=rtpmap:0 PCMU/8000

20-RECEIVED From 135.119.42.120:1033 at 3104
INVITE sip:31@135.119.42.100 SIP/2.0
From: sip:30@135.119.42.100;tag=2c16366
To: sip:31@135.119.42.100
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 1 INVITE
Contact: sip:30@135.119.42.120
Content-Type: application/sdp
Content-Length: 201
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120

v=0
o=Pingtel 5 5 IN IP4 135.119.42.120
s=phone-call
c=IN IP4 135.119.42.120
t=0 0
m=audio 8768 RTP/AVP 0 96 8
a=rtpmap:0 pcmu/8000/1
a=rtpmap:96 telephone-event/8000/1
a=rtpmap:8 pcma/8000/1

21-SENT To 135.119.42.120:5060 at 3104
SIP/2.0 100 Trying
To: sip:31@135.119.42.100;tag=5976c20
From: sip:30@135.119.42.100;tag=2c16366
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 1 INVITE
Contact: 31<sip:31@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


22-SENT To 135.119.42.120:5060 at 3104
SIP/2.0 180 Ringing
To: sip:31@135.119.42.100;tag=5976c20
From: sip:30@135.119.42.100;tag=2c16366
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 1 INVITE
Contact: 31<sip:31@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


23-RECEIVED From 135.119.42.120:1033 at 3104
REGISTER sip:135.119.42.100 SIP/2.0
From: sip:30@135.119.42.100;tag=16838c16838
To: sip:30@135.119.42.100;tag=4820
Call-Id: 1-reg@135.119.42.120
Cseq: 171 REGISTER
Contact: sip:30@135.119.42.120
Expires: 60
Content-Length: 0
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120


24-SENT To 135.119.42.120:5060 at 3104
SIP/2.0 200 OK
To: sip:30@135.119.42.100;tag=4820
From: sip:30@135.119.42.100;tag=16838c16838
Call-ID: 1-reg@135.119.42.120
CSeq: 171 REGISTER
Contact: 30<sip:30@135.119.42.120>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


25-SENT To 135.119.42.121:5060 at 3105
INVITE sip:31@135.119.42.121:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 31<sip:31@135.119.42.121:5060>
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=6078304c21
Call-ID: EXCEL-CSP1.25f.3105.0@135.119.42.100
Contact: 00000000<sip:00000000@135.119.42.100:5060>
User-Agent: Excel/82.0.16
Supported: timer
Session-Expires: 1800
Min-SE: 300
CSeq: 1 INVITE
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10431 10431 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10428 RTP/AVP 0
a=rtpmap:0 PCMU/8000

26-RECEIVED From 135.119.42.121:5060 at 3105
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 135.119.42.100
Call-ID: EXCEL-CSP1.25f.3105.0@135.119.42.100
CSeq:1 INVITE
t:31<sip:31@135.119.42.121:5060>;tag=8583-23189
F:00000000<sip:00000000@135.119.42.100:5060>;tag=6078304c21
Server:3Com ICD 0.10.1.84.14
m:<sip:31@135.119.42.121>
L: 0


27-RECEIVED From 135.119.42.120:1033 at 3105
ACK sip:00000000@135.119.42.100:5060 SIP/2.0
Contact: sip:30@135.119.42.120
From: 30<sip:30@135.119.42.120:5060>;tag=18141
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 2 ACK
Session-Expires: 1800
Accept-Language: en
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


28-RECEIVED From 135.119.42.121:5060 at 3105
SIP/2.0 200 OK
Via: SIP/2.0/UDP 135.119.42.100
Call-ID: EXCEL-CSP1.25f.3105.0@135.119.42.100
CSeq:1 INVITE
t:31<sip:31@135.119.42.121:5060>;tag=8583-23189
F:00000000<sip:00000000@135.119.42.100:5060>;tag=6078304c21
Server:3Com ICD 0.10.1.84.14
m:<sip:31@135.119.42.121>
L: 103
c: application/sdp

v=0
o=username 0 0 IN IP4 135.119.42.121
s=
c=IN IP4 135.119.42.121
t=0 0
m=audio 7408 RTP/AVP 0

29-SENT To 135.119.42.121:5060 at 3106
ACK sip:31@135.119.42.121:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 31<sip:31@135.119.42.121:5060>;tag=8583-23189
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=6078304c21
Call-ID: EXCEL-CSP1.25f.3105.0@135.119.42.100
CSeq: 1 ACK
Content-Length: 0


30-SENT To 135.119.42.120:5060 at 3106
SIP/2.0 200 OK
To: sip:31@135.119.42.100;tag=5976c20
From: sip:30@135.119.42.100;tag=2c16366
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 1 INVITE
Contact: 31<sip:31@135.119.42.100:5060>
Require: timer
Supported: timer
Session-Expires: 1800; refresher=uas
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10399 10399 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10396 RTP/AVP 0
a=rtpmap:0 PCMU/8000

31-RECEIVED From 135.119.42.120:1033 at 3106
ACK sip:31@135.119.42.100:5060 SIP/2.0
Contact: sip:30@135.119.42.120
From: sip:30@135.119.42.100;tag=2c16366
To: sip:31@135.119.42.100;tag=5976c20
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 1 ACK
Session-Expires: 1800
Accept-Language: en
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


32-RECEIVED From 135.119.42.120:1033 at 3106
OPTIONS sip:31@135.119.42.100:5060 SIP/2.0
From: sip:30@135.119.42.100;tag=2c16366
To: sip:31@135.119.42.100;tag=5976c20
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 OPTIONS
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


33-SENT To 135.119.42.120:5060 at 3106
SIP/2.0 200 OK
To: sip:31@135.119.42.100;tag=5976c20
From: sip:30@135.119.42.100;tag=2c16366
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 OPTIONS
Supported: timer
Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, REGISTER, REFER, NOTIFY
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


34-RECEIVED From 135.119.42.120:1033 at 3113
INVITE sip:31@135.119.42.100:5060 SIP/2.0
From: sip:30@135.119.42.100;tag=2c16366
To: sip:31@135.119.42.100;tag=5976c20
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 3 INVITE
Contact: sip:30@135.119.42.120
Content-Type: application/sdp
Content-Length: 187
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120

v=0
o=Pingtel 5 5 IN IP4 0.0.0.0
s=phone-call
c=IN IP4 0.0.0.0
t=0 0
m=audio 8768 RTP/AVP 0 96 8
a=rtpmap:0 pcmu/8000/1
a=rtpmap:96 telephone-event/8000/1
a=rtpmap:8 pcma/8000/1

35-SENT To 135.119.42.120:5060 at 3113
SIP/2.0 100 Trying
To: sip:31@135.119.42.100;tag=5976c20
From: sip:30@135.119.42.100;tag=2c16366
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 3 INVITE
Contact: 31<sip:31@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


36-SENT To 135.119.42.120:5060 at 3113
SIP/2.0 200 OK
To: sip:31@135.119.42.100;tag=5976c20
From: sip:30@135.119.42.100;tag=2c16366
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 3 INVITE
Contact: 31<sip:31@135.119.42.100:5060>
Require: timer
Supported: timer
Session-Expires: 1800; refresher=uas
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Type: application/sdp
Content-Length: 137

v=0
o=sip 10399 10399 IN IP4 135.119.42.100
s=SIP_Call
c=IN IP4 135.119.42.106
t=0 0
m=audio 10396 RTP/AVP 0
a=rtpmap:0 PCMU/8000

37-RECEIVED From 135.119.42.120:1033 at 3113
ACK sip:31@135.119.42.100:5060 SIP/2.0
Contact: sip:30@135.119.42.120
From: sip:30@135.119.42.100;tag=2c16366
To: sip:31@135.119.42.100;tag=5976c20
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 3 ACK
Session-Expires: 1800
Accept-Language: en
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


38-RECEIVED From 135.119.42.120:1033 at 3113
REFER sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=18141
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 3 REFER
Contact: sip:30@135.119.42.120
Referred-By: 30<sip:30@135.119.42.120:5060>; ref=<sip:31@135.119.42.100?REPLACES
=call-1023306423-10%40135.119.42.120%3Bto-tag%3D5976c20%3Bfrom-tag%3D2c16366>
Refer-To: sip:31@135.119.42.100?REPLACES=call-1023306423-10%40135.119.42.120%3Bt
o-tag%3D5976c20%3Bfrom-tag%3D2c16366
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


39-SENT To 135.119.42.120:5060 at 3113
SIP/2.0 202
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
From: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 3 REFER
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


40-SENT To 135.119.42.120:5060 at 3113
NOTIFY sip:30@135.119.42.120:5060 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: 30<sip:30@135.119.42.120:5060>;tag=18141
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 1 NOTIFY
Event: refer
Contact: 00000000<sip:00000000@135.119.42.100:5060>
Content-Type: message/sipfrag;version=2.0
Content-Length: 16

SIP/2.0 200 OK

41-RECEIVED From 135.119.42.120:1033 at 3114
SIP/2.0 200 OK
From: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
To: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 1 NOTIFY
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


42-SENT To 135.119.42.120:5060 at 3114
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


43-RECEIVED From 135.119.42.120:1033 at 3114
BYE sip:00000000@135.119.42.100:5060 SIP/2.0
From: 30<sip:30@135.119.42.120:5060>;tag=18141
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
Call-Id: EXCEL-CSP1.24f.3094.500@135.119.42.100
Cseq: 4 BYE
Accept-Language: en
Supported: sip-cc, sip-cc-01, timer
User-Agent: Pingtel/1.2.7 (VxWorks)
Via: SIP/2.0/UDP 135.119.42.120
Content-Length: 0


44-SENT To 135.119.42.120:5060 at 3114
SIP/2.0 200 OK
To: 00000000<sip:00000000@135.119.42.100:5060>;tag=5914974c16
From: 30<sip:30@135.119.42.120:5060>;tag=18141
Call-ID: EXCEL-CSP1.24f.3094.500@135.119.42.100
CSeq: 4 BYE
Via: SIP/2.0/UDP 135.119.42.120
User-Agent: Excel/82.0.16
Content-Length: 0


45-SENT To 135.119.42.120:5060 at 3114
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


46-RECEIVED From 135.119.42.120:1033 at 3114
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


47-RECEIVED From 135.119.42.120:1033 at 3114
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


48-SENT To 135.119.42.120:5060 at 3114
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


49-RECEIVED From 135.119.42.120:1033 at 3114
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


50-SENT To 135.119.42.120:5060 at 3114
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


51-RECEIVED From 135.119.42.120:1033 at 3114
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


52-SENT To 135.119.42.120:5060 at 3114
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


53-RECEIVED From 135.119.42.120:1033 at 3114
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


54-SENT To 135.119.42.120:5060 at 3114
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


55-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


56-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


57-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


58-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


59-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


60-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


61-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


62-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


63-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


64-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


65-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


66-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


67-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


68-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


69-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


70-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


71-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


72-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


73-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


74-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


75-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0


76-SENT To 135.119.42.120:5060 at 3115
BYE sip:30@135.119.42.120 SIP/2.0
Via: SIP/2.0/UDP 135.119.42.100
To: sip:30@135.119.42.100;tag=2c16366
From: sip:31@135.119.42.100;tag=5976c20
Call-ID: call-1023306423-10@135.119.42.120
CSeq: 2 BYE
User-Agent: Excel/82.0.16
Content-Length: 0


77-RECEIVED From 135.119.42.120:1033 at 3115
SIP/2.0 200 OK
From: sip:31@135.119.42.100;tag=5976c20
To: sip:30@135.119.42.100;tag=2c16366
Call-Id: call-1023306423-10@135.119.42.120
Cseq: 2 BYE
Via: SIP/2.0/UDP 135.119.42.100
Contact: sip:30@135.119.42.120
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE
User-Agent: Pingtel/1.2.7 (VxWorks)
Content-Length: 0

 

 

SIP 180 Provisional Response Generation

The following call flow shows the SIP 180 Provisional Response Generation feature in an environment with a Voice Recognition Unit (VRU). Note that the SIP 180 response is suppressed for this call.