- APN (Access Point Name) – Name of GPRS access point.
- CSD (Circuit Switched Data) – Circuit switched data transmission.
- GSM (Group Switched Mobile system) – Current standard for digital mobile telephone systems.
- GPRS (General Packet Radio Service) – High-rate packet oriented GSM data transmission.
- HW (Hardware) – For this purpose, hardware means an electronic device, circuit, board, component, etc.
- PIN (Personal Identification Number) – Code protecting SIM cards against unauthorised use.
- PUK (Personal Unblocking Key) – Code unblocking SIM cards after repeated wrong PIN attempts.
- SIM (Subscriber Identity Module) – Chip module for GSM identification to be inserted in a GSM device.
- FW (Firmware) – Software responsible for system function.
- SW (Software)
