| GSM | GPRS |
| Uses one among 7 slots | Uses as many as 4+1 time slots |
| Connecting resources to each unit from remote location to the back office is done through a direct dial up | Does not claim any resources until some data is sent. The information is divided into packets |
| Circuit switched mode of operations | Packet switched mode of operations |
| Dedicated channel all the way to the destination is provided to the customer | One or more dedicated channels are assigned by the operator specifically for shared use |