Circuit Modem 7510 de SGS-THOMSON
Modems CML Microcircuits
ultra-faible consommation
http://w1.nnx.com/comprendre/cmdmodem.htm Envoi de commande au Modem
http://www.geocities.com/~lohri/hayes/hayes1.htm Hayes - commandes Hayes
http://www.conexant.com/cnxt/index.html socket modem modules from Conexant.
http://www.zytrax.com/tech/layer_1/cables/tech_rs232.htm brochages pour connecter un modem
http://www.wizard.com/users/baker/public_html/Computers/AT_Commands.html Commandes AT en général
http://www.eicon.com/support/helpweb/spd2en/at.asp Commandes AT en général
http://www.columbia.edu/acis/networks/protocols.html Vitesses et protocoles
http://spazioweb.inwind.it/nferrarese/File/atcomluc.zip Commandes AT des modems avec Chipset Lucent
Modem AT-command questions..
> Anybody knows how to stop a modem from data mode to command mode and then
hung it up? I've tried +++ then wait for one second, followed by ath then one
second, and then at+chup.. but they're not stoping my modem..
It's possible the +++ chars were reset. I seem to remember that you could tell
the modem to use other chars besides '+' to escape "data mode". It's
been a long time though since I've cared thanks to cable modems. You have to
wait before the +++ too. So stop the data, wait the required
delay, which van be longer than 1 second, send +++ and wait again. After that
you should see 'OK' appear and be able to hangup with 'ATH'.
Try an initial wait of over 2 seconds before the "+++". Or simply drop the DTR line.
You have to wait 0.5 sec before +++ then wait for OK before you send ath. Another
methode is dropping DTR for about 0.5 secs.
GSM
introduction, principe et histoire de la téléphonie cellulaire:
http://www.iec.org/online/tutorials/gsm/
toutes les spécifications du gsm (en francais), crosslist (ou cherchez?) de la 3ggp (www.3ggp.org) http://perso.wanadoo.fr/cell.sys/recs_fr.htm
pour de l'info plus généraliste (grand public), l'inévitable "cellular news" http://www.cellular-news.com/
et en cadeau bonus, la page de liens inévitables sur la toile: http://www.valtanen.com/e/gsm/links/
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24 août, 2009
email: matthieu.benoit@free.fr