... 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 GSM 900 GSM 1800 GSM 1900Figure 1-10 GSM frequency bands GSM 900The original frequency band specified for GSM was 900 MHz.Most GSM networks worldwide use this ... (MS) 22 GSM GEOGRAPHICAL NETWORK STRUCTURE 23CELL 23LOCATION AREA (LA) 23MSC SERVICE AREA 25PLMN SERVICE AREA 25 GSM SERVICE AREA 26 GSM FREQUENCY BANDS 28 GSM 900 28 GSM 1800 28 GSM 1900 ... and extended version of GSM 900 can be used, whichprovides extra network capacity. This extended version of GSM is called E -GSM, while the primary version is called P -GSM. GSM 1800In 1990, in...