At command summary tables 2, Table 5. data mode command summary, At command summary tables – Intel 537EX User Manual
Page 14: Data mode command summary, Intel confidential

14
536EX Chipset Developer’s Manual
Intel Confidential
AT Command Summary Tables
AT Command Summary Tables
2
This section contains summary tables of all AT commands, S-registers, and between AT commands
and S-registers. These commands are fully described in the relevant sections of the 536EX
Developer’s Manual.
Table 5. Data Mode Command Summary
Note
Command
Function
Default
Range
Reported
by &Vn
**
A/
Repeat last command
none
–
no
A
Answer
none
–
no
Cn
Carrier control option
1
0, 1
no
C0
Transmit carrier always off
C1
Normal transmit carrier
D
Dial command
none
–
no
*
En
Command mode echo
1
0, 1
yes
E0
Disables echo
E1
Enables echo
Hn
Switch hook control
0
0, 1
no
H0
Hangs up the telephone line
H1
Picks up the telephone line
In
Identification/checksum option
0
0–7, 10–11,
14, 20–23
no
I0
ROM Checksum
I1
Modem Name
I2
Manufacturer
I3
Chipset
I4
Firmware Version
I5
Modem Chip Hardware Configuration
I6
DSP Patch Level
I12
Country Code
I7–I11, I13,
I14, I20–
I25
Reserved
*
Ln
Speaker volume control
2
0–3
yes
L0
Low speaker volume
L1
Low speaker volume
L2
Medium speaker volume
*
Value saved in NVRAM.
**
Command not preceded by an ‘AT.’