Actiontec electronic 56K user manual Dial command, AT Commands Affecting ITU-T V.90 Operation

	AT or follow with ENTER
A	Answer
D_	Dial command
P	Select pulse dialing; affects current and subsequent dialing
T	Select tone dialing; affects current and subsequent dialing
En	Command echo
E0	Disables echo
E1	Enables echo (default)
Hn	Switch hook Control
H0	Hangs up the telephone line (default)
H1	Picks up the telephone line
Ln	Speaker volume
L0	Off or low speaker volume
L1	Low volume
L2	Medium volume (default)
L3	High volume

AT Commands Affecting ITU-T V.90 Operation

There are 3 S-registers which support K56flex, V.90, and V.34 connections. S38 sets the maximum downstream speed that the modem attempts to connect. To disable V.90, set S38 to 0. The S37 register is used to control the upstream V.34 rate. Use the S109 register to select between K56flex and V.90 protocols.

S37		Dial Line Rate (default 0)
S37 = 0		maximum modem speed (default)
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
S37	= 12	16800 bits/s
S37	= 13	19200 bits/s
S37	= 14	21600 bits/s
S37	= 15	24000 bits/s
S37	= 16	26400 bits/s
S37	= 17	28800 bits/s
S37	= 18	31200 bits/s
S37	= 19	33600 bits/s

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