Dual band,Dual mode,GSM,GPRS

Dual band

Dual band mobile phones can work on networks that operate on different frequency bands. This is useful if you move between areas covered by different networks. Some networks operate on two bands, for instance GSM-1800 in town centers and GSM-900 in the rest of the country.
Dual mode

Dual mode mobile phones have more than one air interface and hence can work on more than one network. One example is phones that operate on both digital and analog networks. They are quite useful if you want the advantages of a digital phone, but regularly visit areas where analog is the only service available.
EDGE

Enhanced Data Rates for GSM Evolution. An enhanced modulation technique designed to increase network capacity and data rates in GSM networks. EDGE should provide data rates up to 384 Kbps. EDGE will let operators without a 3G license to compete with 3G networks offering similar data services. EDGE is not expected before 2001 at the earliest.
EPOC

Deprecated term. Refer to Symbian OS.
E-TACS

Extended Total Access Communications System: a 1G mobile phone network developed in the UK and available in Europe and Asia.
FCT

Fixed Cellular Terminal

- also known as : GSM Gateway, GSM Modem, GSM Router, Mobile Gateway, channel bank, GSM channel Bank, ISDN GSM Gateway, analogue GSM gateway.
Fixed Cellular Terminal Mobile Device that allows fixed telephony devices such as PBX Telephone Systems to connect directly to the GSM Mobile Phone Network - This may be to allow PBX users to call colleages on their mobiles free of charge, or call other mobile users at reduced rates (depending upon available tariffs) - or for use in remote offices where no fixed line services are available (eg building site / remote monitoring post) - for landline substitution then Fixed Cellular Terminals are available that can provide voice, fax and data over the GSM network such as the Ericsson F251m .
GPRS

General Packet Radio Service: a radio technology for GSM networks that adds packet-switching protocols, shorter set-up time for ISP connections, and offer the possibility to charge by amount of data sent rather than connect time. GPRS promises to support flexible data transmission rates typically up to 20 or 30 Kbps (with a theoretical maximum of 171.2 Kbps), as well as continuous connection to the network. A 2.5G enhancement to GSM, GPRS is the most significant step towards 3G, needing similar business model, and service and network architectures. GPRS started to appear in some networks during 2000.
GSM

Global System for Mobile communications, the most widely used digital mobile phone system and the de facto wireless telephone standard in Europe. Originally defined as a pan-European open standard for a digital cellular telephone network to support voice, data, text messaging and cross-border roaming. GSM is now one of the world's main 2G digital wireless standards. GSM is present in more than 160 countries and according to the GSM Association, accounts for approximately 70 percent of the total digital cellular wireless market. GSM is a time division multiplex (TDM) system. Implemented on 800, 900, 1800 and 1900 MHz frequency bands.