U-90E
Data/Fax
Modem
AT Command Set Summary
5-3
Command Options
Function & Description
Ref.
'ATT'
I1
Display product information and ROM
checksum
I2
Display modem link status report
I12
Display physical layer status
I13
Display Channel response for V.34
I14
V 90 capability report
I15
V 90 power management report
L
n
n=0-7
4 *
Speaker volume control. The higher the
value, the higher the volume
S24.5-7
M
n
Speaker
control
S21.1-2
M0
Speaker always OFF
M1 *
Speaker ON until call is answered
M2
Speaker always ON
M3
Speaker ON after the last digit is dialed
out and OFF when carrier is detected
N
n
n=0-7
5 *
Ring volume control.'N0' will disable the
audio ring function
S24.1-3
O
Return to on-line state
O1
Force modem to request a retrain
Q
n
Result code displayed
S23.7
Q0 *
Modem returns result code
Q1
Modem does not return result code
Q2
Modem returns result code but quiet after
answering on a RING (see also S42.2)
S40.1
Sr.b=
n
Set bit 'b' of S-register 'r' to value 'n'. 'n' is
a binary digit '0' or '1'
Sr.b?
Display value of bit 'b' of S-register 'r'
Sr=
n
Set S-register 'r' to value 'n'. 'n' must be a
