Hi Christophe, Gentle reminder not to top-post on this mailing list. On 04/01/2011 02:00 AM, Ostermann, Christophe wrote: > Hi Denis, > > Thank you for this quick answer. > > Yes H24 modem expects some raw data in this mode (after having created a > TCP or UDP socket). > > This modem must also support standard way of sending data through ppp. I > will start by using this mode. I ve tried but unfortunately AT+CGDATA is > not recognized by this modem. I m just starting to play with this modem > so I ve to investigate how to configure it properly without this > command. > You might have luck using the legacy ATD*99 variation instead of CGDATA, but we don't support this inside the current atmodem/gprs-context.c. Have a look at gatchat/gsmdial.c, it implements this functionality. So you might be able to quickly test whether PPP/ATD*99 works on the H24. Regards, -Denis