What is the required information in order to establish connection via GPRS between device and server?
To establish the connection via GPRS, the following information is needed from the GSM carrier:
1. GPRS Access Point Name (APN)
2. GPRS Login Username (if required)
3. GPRS Login Password (if required)
Once the GPRS connection is established, the device needs to know how to get to the server. Therefore, the following information is needed from the software hosting service provider or the MIS in your company:
4. Server IP address or FQDN (e.g. www.example.com)
5. Server Listening Socket Type and Port Number.
All the above five information needs to be entered into AT$GPRS command.
When I in the roaming state, can I switch the GPRS to SMS as the default reporting method?
Yes, the device can be setup to perform in such way. All you need to do is to setup the “Restrict Mode” and “SMS Instead” in the AT$ROAM command. Furthermore, you can prolong the tracking interval by setting the “Preferred/Not Preferred Mode”. In the case that you have cooperated GSM carrier even in the roaming areas and prefer to use their networks, you can also specify them in the “Provider Code”.