Black Box 3600 User Manual page 173

Current Modulation S91
The S91 register is for reference only.
Bit Value Command Description
3-0 0000 --
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
7-4 -- --
S92 - S94
Reserved
Auto mode
V.21
B103
Reserved
B212A
V.22 bis
V.27 (lease line only)
Reserved
V.29 (lease line only)
Reserved
V.33 (lease line only)
V.32 bis
V.34
Reserved
Modem 3600
Status Registers
10-29