Data Transfer via GSM connection
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hello guys i'm new in mobile development but i want to start now with a small application. there are a rough overview below about the main-processes: - open a gsm-connection at the mobile-phone (client) and dail-up to a pcmcia or usb gsm modem (server) - wait for response and send data by the mobile phone to the pcmcia or usb gsm modem (server) - save received data in a database at the (server) my main problem is how to get a connection from the mobile phone to the pcmcia or usb gsm modem and how to access the pcmcia or usb gsm modem with the "serverside" application ? i saw a some good explanations but the work only with a serial-port-communication (for the serverside). does somebody know how can i solve this problem ? thanks lutz
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hello guys i'm new in mobile development but i want to start now with a small application. there are a rough overview below about the main-processes: - open a gsm-connection at the mobile-phone (client) and dail-up to a pcmcia or usb gsm modem (server) - wait for response and send data by the mobile phone to the pcmcia or usb gsm modem (server) - save received data in a database at the (server) my main problem is how to get a connection from the mobile phone to the pcmcia or usb gsm modem and how to access the pcmcia or usb gsm modem with the "serverside" application ? i saw a some good explanations but the work only with a serial-port-communication (for the serverside). does somebody know how can i solve this problem ? thanks lutz
What you are asking may not be possible. The mobile data connections I have used (on AT&T and Sprint)tend to have private IP addresses and so they can't be reached from the Internet. Despite their use of Hayes AT commands the GSM modem is not like the acoustic modems that we used 10-15 years ago; if a device isn't connected you cannot dial into it. Some GSM modems do accept SMS and voice calls which can be used to tell it to connect to the Internet, but it's been a while since I've seen code on receiving SMS on a PC.
Joel Ivory Johnson (J2i.net) Live Messenger