... 36x 3.55 mm Industrial Class Device. Cinterion GSM/GPRS module MC39iFeaturesDual Band GSM/GPRS 900/1800MHzCompliant to GSM phase 2 ... : 9gVoice: FR/EFR/HR/AMR, noise suppression and echo cancellationPCM audio, Emergency callsSMS: Text and PDU mode, Point to point (MO ... : non transparent, CSD up to 14.4kbps, USSD,Interfaces: UART, RF connector, 40 pin system connector,SIM card interface, Keypad and ...