Itu-T V.90 Operation Commands - ActionTec External USB 56K Modem User Manual

Actiontec External USB 56K Modem User Manual
H0 Hangs up the telephone line*
H1 Picks up the telephone line
Ln Speaker volume
L0 Off or low speaker volume
L1 Low volume
L2 Medium volume*
L3 High volume
ITU–T V.90 Operation Commands
Three S-registers support K56flex, V.90, and V.34 connections. The S37 register is
used to control the upstream V.34 rate. The S38 register is used to control the maxi-
mum downstream speed at which the Modem attempts to connect. To disable V.90,
set S38 to 0. The S109 register is used to select between K56flex and V.90 protocols.
Dial Line Rate (S37)
S37 = 0 maximum modem speed*
S37 = 1 reserved
S37 = 2 1200 bits/s and 75 bits/s
S37 = 3 300 bits/s
S37 = 4 reserved
S37 = 5 1200 bits/s
S37 = 6 2400 bits/s
S37 = 7 4800 bits/s
S37 = 8 7200 bits/s
S37 = 9 9600 bits/s
S37 = 10 12000 bits/s
S37 = 11 14400 bits/s
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