sip on asterisk
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cp amfa
Mar 4, 2012, 5:02:19 AM3/4/12
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hello all
i am supposed to investigate the sip protocol. and i need to write a
short program that will capture ALL sip messages.
i think i have done a pretty good job of capturing the general
behavior of the protocol
i have identified EVERY sip message as having the following fields
(data):
SIP/
Call-ID (or i)
Cseq
From (or f)
To (or t)
Via (or v) followed by SIP/
i have received a response that it will dot capture sip messages from
a private label sip client (e.g gold seal) talking to a Asterisk
server.
as i understand there might be shorter versions that contain only
SIP/
or
Via (or v) followed by SIP/
can someone tell when is this happening, or even upload a pcap??
if anyone understands my problem , a quick answer will help a lot
thank you
i am supposed to investigate the sip protocol. and i need to write a
short program that will capture ALL sip messages.
i think i have done a pretty good job of capturing the general
behavior of the protocol
i have identified EVERY sip message as having the following fields
(data):
SIP/
Call-ID (or i)
Cseq
From (or f)
To (or t)
Via (or v) followed by SIP/
i have received a response that it will dot capture sip messages from
a private label sip client (e.g gold seal) talking to a Asterisk
server.
as i understand there might be shorter versions that contain only
SIP/
or
Via (or v) followed by SIP/
can someone tell when is this happening, or even upload a pcap??
if anyone understands my problem , a quick answer will help a lot
thank you
Mark Dm
Jun 3, 2019, 1:41:50 PM6/3/19
to pcapr-forum
SIP messages will most always be bound to a specific port (5060 by default) . Capturing all packets to the SIP port is best
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