**>Message-ID: <[EMAIL PROTECTED]>
**>From: sachin lamsoge <[EMAIL PROTECTED]>
**>Subject: Re: kannel basics
**>To: Chris Blown <[EMAIL PROTECTED]>,
**>   "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
**>In-Reply-To: <[EMAIL PROTECTED]>
**>Date: Thu, 13 Sep 2001 22:39:50 -0700 (PDT)
**>
**>hi chris,
**>
**>     i have music in the form of MP3s and WAVs. And i dont
**>want any specialised mobile instrument,(as you said
**>the certain mobile instrument have MP3 players). i
**>want the MP3 player to be residing at the gateway
**>end(SMS or WAP). And the gateway initiating a voice
**>call (through the cellular network) to the requesting
**>mobile phone to play the music. 
**>
**>     This is something similar to one of my friend calling
**>me from his mobile to my phone (mobile or PSTN) and
**>telling me to play a song of his choice which i have
**>in the form of MP3. I play the song on my MP3 player
**>and take my phone (mobile or PSTN) closer to the
**>speakers for my friend to listen to the music and my
**>friend will be charged for the air time.
**>
**>     In the above case the request for the song is made as
**>a voice call, while what i want in my application is
**>that the song request to come as an SMS or a WAP
**>request. The player resides at the gateway end and a
**>voice call to be initiated by the gateway (SMS or
**>WAP), and song to be played as a voice call charged on
**>air-time basis.
**>
**>do you think this is realizable technically,
**>considering i have access to an open source SMS-WAP
**>gateway (kannel) and i can modify the source as
**>required?
**>

You can create a prototype for this system with:
  - Linux box
  - Kannel
  - GSM modem or mobile phone supported by kannel
  - Analog modem with Voice capabilities

Setup kannel to accept the SMS messages. Inside the SMS message could
be the name of the song. Kannel can then relay the name of the song
and the phone number of the mobile phone to another application.
This application can call the mobile phone using the analog modem,
switch the analog modem over to voice mode and play the WAVE/MPEG3
file through the analog modem.

To see how to manipulate the analog modem with voice support, take
a look at mgetty+sendfax v1.1.x.

If you plan on expanding this to support more than a few concurrent
users, then I would suggest you replace the analog modems with a
Dialogs board.

See ya...

d.c.

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