User`s guide

AT Register Summary (continued)
Command Description Range
Unit
S23 Option register None —
(see below)
S24
Reserved
—
—
S25
DTR delay value
0-255
1/100 sec
S26
RTS to CTS turnaround
— —
delay
S27
Option register
None —
(see below)
S37 MNP modem Iine
—
—
connect speed
Default
07H
-
005
-
I
40H
I
—
Option Registers
S14 Bit mapped configuration register
bit 0
Unused
bit 1 0
Command echo disabled (E0)
I
1 Command echo enabled (default E1)
bit 2
0
Result codes enabled (default Q0)
1
Result codes disabled (Q1)
bit 3
0
Digit result codes (V0)
1
Word result codes (default V 1)
bit 4
Unused
bit 5
0 Tone dial (T)
1 Pulse dial (default P)
bit 6
Unused
bit 7
0 Answer mode
1
Originate mode (default)
Fax/Modem Command Set B-9