Oki Electric Industry
π/4 Shift QPSK MODEM
Oki Electric Industry
ITU-T G.721 ADPCM TRANSCODER
Oki Electric Industry
π/4 Shift QPSK MODEM
Oki Electric Industry
π/4 Shift QPSK MODEM/ADPCM CODEC
Oki Electric Industry
π/4 Shift QPSK MODEM/ADPCM CODEC
Oki Electric Industry
ITU-T G.721 ADPCM TRANSCODER
Oki Electric Industry
π/4 Shift QPSK MODEM
Oki Electric Industry
ITU-T G.721 4ch ADPCM TRANSCODER