User Agent to User Agent: Call Waiting

Call Trace

The following call trace shows a third party attempting to connect to a phone

 

that is engaged in conversation with another phone.

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

 

A calls B

-----------------------------------------------------------------

 

SIP Headers

-----------------------------------------------------------------

sip-req:

INVITE sip:5220@192.168.66.180:5060;user=phone SIP/2.0 [192.168.66.1:5060-

>192.168.66.180:5060]

Header:

Via: SIP/2.0/UDP 192.168.66.1:5060

Header:

From: UserAgent<sip:5221@192.168.66.1:5060;user=phone>

Header:

To: 5220<sip:5220@192.168.66.180:5060;user=phone>

Header:

Call-ID: 4732a6465cfdffbdc0d38708c0728708@192.168.66.1

Header:

CSeq: 1 INVITE

Header:

Subject: VovidaINVITE

Header:

Contact: <sip:5221@192.168.66.1:5060;user=phone>

Header:

Content-Type: application/sdp

Header:

Content-Length: 168

-----------------------------------------------------------------

 

SDP Headers

-----------------------------------------------------------------

Header:

v=0

Header:

o=- 1528076688 1528076688 IN IP4 192.168.66.1

Header:

s=VOVIDA Session

Header:

c=IN IP4 192.168.66.1

Header:

t=3177769010 0

Header:

m=audio 56104 RTP/AVP 0

Header:

a=rtpmap:0 PCMU/8000

Header:

a=ptime:20

Header:

7

-----------------------------------------------------------------

 

SIP Headers

-----------------------------------------------------------------

sip-res:

SIP/2.0 100 Trying [192.168.66.180:5060->192.168.66.1:5060]

Header:

Via: SIP/2.0/UDP 192.168.66.1:5060

Header:

From: UserAgent<sip:5221@192.168.66.1:5060;user=phone>

Header:

To: 5220<sip:5220@192.168.66.180:5060;user=phone>

Header:

Call-ID: 4732a6465cfdffbdc0d38708c0728708@192.168.66.1

Header:

CSeq: 1 INVITE

Header:

Content-Length: 0

-----------------------------------------------------------------

 

SIP Headers

-----------------------------------------------------------------

sip-req:

INVITE sip:5220@192.168.66.200:5060;user=phone SIP/2.0 [192.168.66.180:5060-

>192.168.66.200:5060]

Header:

Via: SIP/2.0/UDP 192.168.66.180:5060;branch=1

Header:

Via: SIP/2.0/UDP 192.168.66.1:5060

Header:

From: UserAgent<sip:5221@192.168.66.1:5060;user=phone>

Header:

To: 5220<sip:5220@192.168.66.180:5060;user=phone>

Header:

Call-ID: 4732a6465cfdffbdc0d38708c0728708@192.168.66.1

Header:

CSeq: 1 INVITE

Header:

Proxy-Authorization: Basic 123

Header:

Subject: VovidaINVITE

Header:

Record-Route: <sip:5220@192.168.66.180:5060;maddr=192.168.66.180>

Header:

Contact: <sip:5221@192.168.66.1:5060;user=phone>

Header:

Content-Type: application/sdp

Header:

Content-Length: 168

-----------------------------------------------------------------

 

SDP Headers

-----------------------------------------------------------------

Header:

v=0

Header:

o=- 1528076688 1528076688 IN IP4 192.168.66.1

Header:

s=VOVIDA Session

Header:

c=IN IP4 192.168.66.1

Header:

t=3177769010 0

Header:

m=audio 56104 RTP/AVP 0

Header:

a=rtpmap:0 PCMU/8000

Header:

a=ptime:20

C-79

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Image 135
Cisco Systems 1.3.0 manual That is engaged in conversation with another phone