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**Iphone** · 29-Mar-2007, 02:01 AM

I am having trouble locating informatioin pertaining to GSM/GPRS for a new application/device I am trying to develop.
I might be asking it the wrong way as I am just now diving into this arena.

1.Does a SIM card connect to a GSM network or a GPRS network?

2. Can we have a GPRS based SIM card which can support “Public IP address”.
So that we can “Ping”, “Telnet”, “Web console” the device after our “Cellular Router

3.What are the main differences between GSM and GPRS (technologically speaking)

4. What are the available port numbers for this IP address(from simcard): same as other devices port 21 FTP, etc

5. Will this be a static IP or a dynamic IP from the network?

6. Is this a public IP or a private IP. I need to be able to ping this IP from another public IP from any ISP (internet service provider). Do the SIM cards get an IP address similar to if you are on a LAN 192.*.*.* or 172.*.*.* or 10.*.*.*? Or do they get Public IP addresses?

29-Mar-2007, 02:01 AM	#1 (permalink)
Iphone Fixed Error! Posts: 4,202 Join Date: Mar 2007 Rep Power: 6 IM:	GPRS/GSM Network Information I am having trouble locating informatioin pertaining to GSM/GPRS for a new application/device I am trying to develop. I might be asking it the wrong way as I am just now diving into this arena. 1.Does a SIM card connect to a GSM network or a GPRS network? 2. Can we have a GPRS based SIM card which can support “Public IP address”. So that we can “Ping”, “Telnet”, “Web console” the device after our “Cellular Router 3.What are the main differences between GSM and GPRS (technologically speaking) 4. What are the available port numbers for this IP address(from simcard): same as other devices port 21 FTP, etc 5. Will this be a static IP or a dynamic IP from the network? 6. Is this a public IP or a private IP. I need to be able to ping this IP from another public IP from any ISP (internet service provider). Do the SIM cards get an IP address similar to if you are on a LAN 192...* or 172...* or 10...*? Or do they get Public IP addresses?