[asterisk-dev] Happy Midsummer!

Hans Petter Selasky hselasky at c2i.net
Thu Jun 21 05:20:59 CDT 2007

On Thursday 21 June 2007 11:25, Olle E Johansson wrote:
> Friends,
> I just wanted to drop a note about my adventures yesterday.
> I spent the whole day working with a company that works with
> telephony for the deaf. We worked on a couple
> of issues, one that was very interesting.
> They're using videocaps, a branch based on trunk. They have SIP
> phones and set up calls and Asterisk chokes
> and denies the calls - so they called me and asked me to explore why?
> I looked at the dialogs and discovered an INVITE
> SIP headers looked fine.
> SDP looked fine.
> But wait! There's a media session for video. And there's a media
> session for text in the SDP.
> Aha! No audio!
> - "Who need's audio?" they said (through a sign-language translator)
> and looked at me.
> So we debugged and debugged and finally got calls to go through, but
> at that point one of their
> clients crashed and we decided that it was too late to continue this
> experiment. I think we almost
> got there and got Asterisk to accept that "phone calls" doesn't have
> to include audio.
> You live and learn. And with this message, I'm disappearing into the
> Swedish midnight sun
> to celebrate midsummer here in Sweden. It's the height of the year
> and as close as we get
> to a national celebration. Everyone burns meat to coal, drinks
> akvavit, dances around (with or
> without clothes) and ...just enjoys the sunshine, the nice weather
> (disregarding the fact that
> it has been raining on many midsummer nights in the past, but who
> care's...)
> So if you see any commits from me during friday, please revert them
> and ignore them :-)

Why not use the sound channel to encode vibration then?


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