OPERATING THE TRANSCEIVER
USING DIGITAL VOICE
ENVOY® TRANSCEIVER GETTING STARTED GUIDE 67
NOTE: Receiving DV stations, which have both MELPe and
TWELP vocoders available by default,
automatically switch to the appropriate rate and
vocoder type when a signal is detected.
NOTE: The 600 bit/s and 1200 bit/s rates are available as
sales options for the DV options (with or without
encryption). The AES-256 DV Encryptor has
standard data rates of 1200 bit/s and 2400 bit/s.
NOTE: 600 bit/s and 1200 bit/s rates are not available if the
RM50 module has non-export controlled version
firmware.
Table 4: Digital voice rates
Digital voice option Vocoder type Available voice
rates (bit/s)
DV
DV with AES-256 Encryption upgrade
MIL/STANAG 2G Data + DV
MIL/STANAG 2G Data + DV with
AES-256 Encryption upgrade
MELPe 1200, 2400
TWELP 600, 1200, 2400
AES-256 DV Encryptor – 1200, 2400
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