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Specifications and Regulatory Information
Modem Reference Information
Command
Function (3Com)
F0
Turn online echo on
F1
Turn online echo off
H0
Hang up (go on-hook)
H1
Pick up (go off-hook)
I0
Display the 4-digit product code
I1
Display the checksum
I2
Display the RAM test results
I3
Display the firmware version
I4
Display the current modem settings
I5
Display user profiles
I7
Display the product configuration
I8
Display blacklist screen
I10
Display VXD configuration screen
I11
Display V.34 link screen
L0
Set modem speaker volume off
L1
Set modem speaker volume on (low)
L2
Set modem speaker volume on (medium)
L3
Set modem speaker volume on (high)
M0
The modem's speaker is always off
M1
The modem's speaker is on until a connection is made
M2
The modem's speaker is always on
M3
The modem's speaker is off during dialing, and on after dialing until the connection is made
O0
Return to online mode
O1
Return to online mode and retrain (automatically return to the highest speed)
S$
Display the list of S-register settings
Sr=n
Set S-Register "r" to "n"
Sr?
Display the value of S-Register "r"
V0
Display result codes in numeric form
V1
Display result codes in verbose form (words)
X0
Report basic call progress result codes, i.e., OK, CONNECT, RING, NO CARRIER, (also, for busy, if
enabled, and dial tone not detected), NO ANSWER and ERROR
X1
Report basic call progress result codes and the connect rates—OK, CONNECT, RING, NO CARRIER
(also, for busy, if enabled, and dial tone not detected), NO ANSWER, CONNECT XXXX and ERROR
X2
Report basic call progress result codes and the connect rates i.e., OK, CONNECT, RING, NO CARRIER
(also, for busy, if enabled), NO DIAL TONE, NO ANSWER, CONNECT XXXX and ERROR
X3
Report basic call progress result codes and connection rate i.e., OK, CONNECT, RING, NO CARRIER, NO
ANSWER, CONNECT XXXX, BUSY and ERROR
X4
Report all call progress result codes and connection rate i.e., OK, CONNECT, RING, NO CARRIER, NO
ANSWER, CONNECT XXXX, BUSY, NO DIAL TONE and ERROR
Y0
On the next reset, use &W0 settings
Y1
On the next reset, use &W1 settings
Y2
On the next reset use, &F0 settings
Y3
On the next reset, use &F1 settings
Y4
On the next reset, use &F2 settings
Z0
Reset the modem according to the settings of ATY
Z1
Reset the modem and use &W0 settings
Z2
Reset the modem and use &W1 settings
Z3
Reset the modem using &F0 settings and load factory default profile 1
Z4
Reset the modem using &F1 settings and load factory default profile 0
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Reference Guide
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Troubleshooting
