- 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 mobile telephone systems.
- GPRS (General Packet Radio Service) – high-speed packet oriented mobile data service.
- HW (Hardware) – for this purpose, hardware means an electronic device, circuit, board, component, etc.
- PIN (Personal Identification Number) – SIM card protecting code against unauthorised use.
- PUK (Personal Unblocking Key) – SIM card unblocking code after repeated wrong PIN entering attempts.
- SIM (Subscriber Identity Module) – chip module for GSM identification.
- SMS (Short Message Service) – transmission of short text messages via GSM, the abbreviation is used for messages too.
- SW (Software) – software.
- IMSI (International Mobile Subscriber Identity) – a unique ID assigned by the provider to a SIM card in a mobile network.
- IMEI (International Mobile Equipment Identity) – a unique ID assigned by the provider to a mobile phone or another mobile device (module, e.g.).
- EMID (Electric Meter ID) – e-power meter ID.
