Compaq 244100-005 - Deskpro 2000 - 16 MB RAM White Paper page 36

Compaq V.90 Integrated Modem Commands
S37 Dial Line Rate (default 0)
This register sets the maximum line data rate. In K56flex and V.90 mode, S37 controls the
upstream V.34 rate.
S37 = 0
S37 = 1
S37 = 2
S37 = 3
S37 = 4
S37 = 5
S37 = 6
S37 = 7
S37 = 8
S37 = 9
S37 = 10
S37 = 11
S37 = 12
S37 = 13
S37 = 14
S37 = 15
S37 = 16
S37 = 17
S37 = 18
S37 = 19
S38 K56flex Downstream Rate
To force a particular K56flex downstream rate, use S-register S38. S38=0 disables K56flex, and
may allow a more reliable V.34 connection. S38=1 default allows the modem to select the
downstream rate automatically. Other values of S38 force the downstream rate, with fallback to
V.34 if unsuccessful at the configured rate:
S38 = 0
S38 = 1
S38 = 2
S38 = 3
S38 = 4
S38 = 5
ECG021/1298
auto rate
reserved
1200/75 bits/s
300 bits/s
reserved
1200 bits/s
2400 bits/s
4800 bits/s
7200 bits/s
9600 bits/s
12000 bits/s
14400 bits/s
16800 bits/s
19200 bits/s
21600 bits/s
24000 bits/s
26400 bits/s
28800 bits/s
31200 bits/s
33600 bits/s
56K disabled
56K enabled - automatic rate selection (default)
32000 bits/s
34000 bits/s
36000 bits/s
38000 bits/s
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