S Registers 37
S23
Bit 0. Detect RDLB (&T4 and &T5 CMD)
■0 = Deny RDLB (&T5 CMD)
■1 = Accept RDLB (&T4 CMD)
Bit 3,2,1. DTE port communications speed (bits/s)
■0 = 300
■4 = 4800
■1 = 57600
■5 = 9600
■2 = 1200
■6 = 19200
■3 = 2400
■7 = 38400
Note: bits 3,2 and 1 of S23 are only valid if bits 3,2 & 1 of S19 = 0.
Bit 5,4. Parity
■0 = Even
■2 = Odd
■1 = Space / none
■3 = Mark
Bit 7,6. Guard Tone (&G CMD)
■0 = None
■2 = 1800 Hz
■1 = 550 Hz
■3 = Not used
