[Asterisk-Users] GSM phones, bluetooth and general happiness

[Jay Milk]

As for how BT transmits Audio:

www.bluetooth.org
www.bluez.org

How Linux utilizes Bluetooth:
http://www.google.com/search?hl=en&ie=UTF-8&q=linux+bluetooth
www.bluez.org

For how to write a channel, I suppose a seasoned linux programmer would
know by looking at the sources for existing channels.  If I had time,
I'd look, but the learning curve (coming from a PC environment) would be
quite steep.

> -----Original Message-----
> From: Igor Battiston (BZSolutions) [mailto:ib at bzsolutions.it] 
> Sent: Friday, September 24, 2004 10:09 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] GSM phones, bluetooth and 
> general happiness
> 
> 
> Hi :)
> I have do same test with Nokia 3650 (bluetooth) and Motorola 
> A835 (bluetooth and USB)
> 
> I have do a log of widcomm software and I can setup a coll 
> (is not only a a
> ATDxxxxxx)
> Now the problem is the voice....
> With bluetooth is possible to use voice-gateway function.... 
> I'm not a good programmer :(
> 
> But now I don't have the know how to write the channel :)
> 
> 
> Some idea? :)
> 
> -thx-
> Igor
> 
> 
> ----- Original Message -----
> From: "Jay Milk" <jay at skimmilk.net>
> To: <mitchel at titaniumsoft.net>; "'Asterisk Users Mailing List 
> - Non-Commercial Discussion'" <asterisk-users at lists.digium.com>
> Sent: Friday, September 24, 2004 4:20 PM
> Subject: RE: [Asterisk-Users] GSM phones, bluetooth and 
> general happiness
> 
> 
> > It's close -- it still requires an FXO port, and is probably not 
> > inexpensive itself.  So between the FXO port and the device, you're 
> > probably in for it at $200 or so.  I can get away cheaper with a 
> > cell-socket.  I'd prefer a bluetooth dongle (1) because of 
> cost, and 
> > (2) because of the sheer elegance of the solution:  No reason to 
> > convert audio back and forth several times, no reason to 
> generate ring 
> > voltage or detect DTMF.  Cell-phone is digital, Asterisk is 
> digital, 
> > let's cut out the analog.
> >
> > > -----Original Message-----
> > > From: Mitchel Constantin [mailto:mitcheloc at gmail.com]
> > > Sent: Friday, September 24, 2004 12:22 AM
> > > To: Asterisk Users Mailing List - Non-Commercial Discussion
> > > Subject: Re: [Asterisk-Users] GSM phones, bluetooth and general 
> > > happiness
> > >
> > >
> > > Our prayers....answered? (http://www.phonelabs.com/prd_blue01.asp)
> > >
> > > mitchel
> > >
> > >
> > > On Thu, 23 Sep 2004 12:10:11 -0500, Jay Milk <jay at skimmilk.net> 
> > > wrote:
> > > > When I installed my first home-PBX three years ago, I was
> > > looking at
> > > > "cellsockets" -- devices which will accept certain cellular
> > > phones and
> > > > provide an RJ11 jack, generating the ring-voltage and 
> recognizing 
> > > > DTMF, which in turn makes your cell-phone look like a CO
> > > line.  Pretty
> > > > cool stuff, in theory, but it just didn't seem to be worth
> > > the cost,
> > > > especially since it locks you to a particular cell-phone.
> > > >
> > > > Since then, I've moved to Asterisk.  I looked at at
> > > cell-sockets again
> > > > recently, but they haven't really gotten any cheaper... And
> > > on top of
> > > > that, I'd now require a precious FXO interface for *.
> > > >
> > > > I looked at some developer documentation for my particular
> > > phone (S/E
> > > > T610) while connecting it to my PC via Bluetooth.  For
> > > those who are
> > > > unaware, all GSM phones have a built-in set of AT modem
> > > commands.  Not
> > > > surprisingly, I was able to place calls as well as receive 
> > > > ring-indicators, caller-id information and call-progress
> > > information
> > > > via the virtual serial port that the phone provides over
> > > bluetooth.
> > > > But what's more, I was also able to utilize my PC as a 
> handsfree 
> > > > speakerphone -- and all this over bluetooth.
> > > >
> > > > As I see it, all the pieces are available -- we got full phone 
> > > > control, some form of digital audio going back and forth, 
> > > > call-progress reporting.  I know there's at least one
> > > bluetooth stack
> > > > for linux, so
> > > > *technically* we're "there", no?
> > > >
> > > > I foresee a chan_blue which allow Asterisk to utilize a
> > > bluetooth/GSM
> > > > cellular phone as a CO line, connecting by nothing more 
> than a $5 
> > > > bluetooth dongle and 5ft of air.
> > > >
> > > > Who's up for the challenge?  If there's enough interest in the 
> > > > community, I'll be the first to add a bounty on this -- 
> it would 
> > > > be worth at least $100 to me to have this functionality.
> > > >
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