V.27 Modem / CCITT Recommendation V.27

Fig. 1

Modulazione D8PSK (Differential 8 Phase Shift Keying) a 4800 bps, full duplex.

Fig. 2

Symbol rate ( Fig. 2 ) 1600 Bd, 3 bits per simbolo ( tribit ):

001 = 0 degrees
000 = 45 degrees
010 = 90 degrees
011 = 135 degrees
111 = 180 degrees
110 = 225 degrees
100 = 270 degrees
101 = 315 degrees

Codifica Gray.

Fig. 3