Hi to all our SIP gurus,
yet another nice report .
MS and I tried to setup some test call. Due to some mistake
MS disabled the microphone and other audio stuff. This
lead to some unexpected results (see attached wireshark
trace). Also have a look at the attached text file that
reports some ugly problems. Please note that both clients
are SC. MS uses a fairly new build (2146). My SC was build
from SVN sources matching build 2150.
All line numbers refer to the wireshark file:
Line 21: INVITE, MS tries to invite my SC. Look at the
SDP data: no media data at all
Line 26: RINGING, I would suspect a 488 not acceptable here
because of missing media?
Line 31: 200 OK, my SC aresponds with OK and full media
Line 32: ACK, MS sends an ACK??? At least here I would have
suspected a 488
Line 46: BYE, after some time I decided to hangup, my SC sends
a BYE but somehow no ACK from MS to the BYE so SC
Line 658: INVITE, I invite MS, sending full media information
Line 671: RINGING
Line 803: 488, Here MS's SC sends the right response because it
does not find a match.
For the first case I would have expected a similar behaviour.
In the first case SC receives an empty set of media data in INVITE
and answers with a full set of media data in OK. And the caller
that receives the OK with the full set does not send a 488 but
To analyse these problems the text file may give some additional
info. It shows some errors for dialog termination etc.
Another problem: iptel.org sends quite a lot of SIP SUBSCRIBE
messages, my SC fails to respond. See text file for the error
messages regarding NOTIFY
Yet another issue or two?
NoMedia.pcap.gz (23.9 KB)
NoMedia.txt.gz (2.69 KB)