D2366 GSM Radio Signal Analyser – Operation Manual – D2366-OPS2/EU/F10/v4 -
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APPENDIX 2
Glossary of Terms
BER – Bit Error Rate
A count or level of interfering signals received by the test set.
CELL – Cellular Identity Number
A number to uniquely identify each GSM/GPRS base station in the UK.
FSSI – Forward Signalling Strength Indication
This is a value indicating the radio signal strength received from the base station at a
GSM communicator or the GSM radio signal analyser.
GPRS – General Packet Radio Service
A packet-based network, within the GSM system, where cost is determined by data
quantity (as distinct from a circuit switched network, where cost is determined by time).
Data rates range from14.4kbps, using just one of the available TDMA time slots, up to a
theoretical 115 kbps when all eight time slots are used. Being a packet-switched system,
the bandwidth within each GPRS cell sector will be divided between all the subscribers.
GSM – Global System for Mobile communication
A second generation cellular telecommunication system, originally for Europe, now global.
A circuit-switched network, where cost is determined by time. It operates in 3 frequency
bands: 900MHz, 1800MHz and 1900MHz.
SIM – Subscriber Identity Module
This is usually referred to as a SIM card. The SIM is the user subscription to the mobile
network. The SIM contains relevant information that enables access onto the subscripted
operator’s network.