I've used Kannel for OTA very sucessfully. Now I see some UK services (hotxt, txt2me) which push a "Missed call" message to the handset to alert the user to run an onboard java app to fetch their messages. The thing is, these are very low cost, in fact txt2me is totally free and doesn't even push ads. This suggests the missed call push is free, or they would use regular SMS which isn't.
So could anyone point me to the format of a missed call push and also does anyone know if they really are free/lower cost in the UK please? Thanks.
