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Brief FCU Series (Fixed Cellular Unit) adopts high quality dual band GSM or GPRS technology to provide voice and data service in a wide variety of industries. Feature TCU-100 integrates GSM dual-band module, data rate up to 9.6Kbps TCU-200 integrates GPRS dual-band module, data rate up to 85.6Kbps for downstream and up to 21.4Kbps for upstream RJ-11 jack for telephone line TCB-100/200 is an optional accessory, which adds GSM/GPRS access to TTIC's payphone series DB9 connector for RS232[...]