SIP Phone to PSTN: Call Blocking

Call Trace

The following call trace shows a call, originating from an on-network SiP IP

 

phone, being blocked by the feature server.

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

 

SIP Headers

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

sip-req:

INVITE sip:914083831059@192.168.26.180 SIP/2.0 [192.168.26.12:50420-

>192.168.26.180:6060]

Header:

Via: SIP/2.0/UDP 192.168.26.12:5060

Header:

From: sip:6715@192.168.26.12

Header:

To: <sip:914083831059@192.168.26.180>

Header:

Call-ID: c2943000-d061261-221d950-2e323931@192.168.26.12

Header:

CSeq: 100 INVITE

Header:

Expires: 180

Header:

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

Header:

Accept: application/sdp

Header:

Contact: sip:6715@192.168.26.12:5060

Header:

Content-Type: application/sdp

Header:

Content-Length: 220

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

 

SDP Headers

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

Header:

v=0

Header:

o=CiscoSystemsSIP-IPPhone-UserAgent 14800 9904 IN IP4 192.168.26.12

Header:

s=SIP Call

Header:

c=IN IP4 192.168.26.12

Header:

t=0 0

Header:

m=audio 24246 RTP/AVP 0 101

Header:

a=rtpmap:0 pcmu/8000

Header:

a=rtpmap:101 telephone-event/8000

Header:

a=fmtp:101 0-11

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

 

SIP Headers

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

sip-res:

SIP/2.0 100 Trying [192.168.26.180:6060->192.168.26.12:5060]

Header:

Via: SIP/2.0/UDP 192.168.26.12:5060

Header:

From: <sip:6715@192.168.26.12:5060>

Header:

To: <sip:914083831059@192.168.26.180:5060>

Header:

Call-ID: c2943000-d061261-221d950-2e323931@192.168.26.12

Header:

CSeq: 100 INVITE

Header:

Content-Length: 0

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

 

SIP Headers

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

sip-req:

INVITE sip:914083831059@192.168.26.200:6060;user=phone SIP/2.0

[192.168.26.180:6060->192.168.26.200:6060]

Header:

Via: SIP/2.0/UDP 192.168.26.180:6060;branch=1

Header:

Via: SIP/2.0/UDP 192.168.26.12:5060

Header:

From: <sip:6715@192.168.26.12:5060>

Header:

To: <sip:914083831059@192.168.26.180:5060>

Header:

Call-ID: c2943000-d061261-221d950-2e323931@192.168.26.12

Header:

CSeq: 100 INVITE

Header:

Proxy-Authorization: Basic VovidaClassXSwitch

Header:

Expires: 180

Header:

Record-Route:

<sip:914083831059@192.168.26.180:6060;maddr=192.168.26.180>

Header:

Contact: <sip:6715@192.168.26.12:5060>

Header:

Content-Type: application/sdp

Header:

Content-Length: 220

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

 

SDP Headers

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

Header:

v=0

Header:

o=CiscoSystemsSIP-IPPhone-UserAgent 14800 9904 IN IP4 192.168.26.12

Header:

s=SIP Call

Header:

c=IN IP4 192.168.26.12

Header:

t=0 0

Header:

m=audio 24246 RTP/AVP 0 101

Header:

a=rtpmap:0 pcmu/8000

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Image 109
Cisco Systems 1.3.0 manual Phone, being blocked by the feature server