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TFESP-3G - GSM 3G interface

GSM 3G interface for the telephone communicator TFCOM Transmission formats: Voice, SMS, Ring, DTMF, Data – AES 128 bit and AES 256 bit data encryption – Independent passphrase for each channel – Automatic airtime request for prepaid SIM cards – Plug-in connection to TFCOM board

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TF2TFESP3G GSM 3G interface for the telephone communicator TFCOM