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S37 = 13
S37 = 14
S37 = 15
S37 = 16
S37 = 17
S37 = 18
S37 = 19
S38 K56flex Dial line rate
S38 enables and disables K56flex mode and sets the maximum
K56flex downstream speed that the modem attempts to connect.
S38=0
S38=1
NOTE: Not all modems support K56flex. If this command
returns an ERROR, then K56flex is not supported.
S38 56K Downstream Rate
To force a particular 56K downstream rate, use S-register S38.
S38=0 disables 56K, 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
19200 bps
21600 bps
24000 bps
26400 bps
28800 bps
31200 bps
33600 bps
56K disabled (default)
56K enabled: automatic speed selection of
maximum modem speed
Disable 56K
Automatic rate selection (default)
32 kbps
S-Registers
S-Register values
45
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