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FEATURES Passed European GSM Phase I Type Approval Complete Baseband Processing Chipset Performs: Speech Coding/Decoding, According to GSM 06.XX DTMF and Call Progress Tone Generation Equalization with 16-State Viterbi, Soft Decision Channel Coding/Decoding According to GSM 05.03 All ADC and DAC Interface Functions Includes all Radio, Auxiliary and Voice Interfaces Support for GSM Data Services Embedded 16-Bit Microcontroller Layer 1 Software Provided with Chipset Full Phase 2 Protocol Stack Software Available Integrated SIM- and Keyboard Interface Ultralow Power Design 2.