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User Guide
Command
H1
I0
I_
I1
I2
I3
I4
L_
L0
L1
L2
L3
M_
M0
M1
M2
M3
N_
O_
O0
O1
P
Q_
Q0
Sr?
Sr=n
T
V_
V0
V1
W_
W0
W1
W2
X_
X0
X1
X2
X3
X4
Z0
Z_
Z1
Function
Force modem off-hook (make busy)
Note: H1 command is not supported for Italy
Display product-identification code
Factory ROM checksum test
Internal memory test
Firmware ID
Reserved ID
Low speaker volume
Low speaker volume
Medium speaker volume
High speaker volume
Internal speaker off
Internal speaker on until carrier detected
Internal speaker always on
Internal speaker on until carrier detected and
off while dialing
Included for compatibility only, provides no
effect
Return to Data Mode
Return to Data Mode and initiate an equalizer
retrain
Set Pulse dial as default
Modem sends responses
Read and display value in register r.
Set register r to value n (n = 0-255).
Set Tone Dial as default
Numeric responses
Word responses
Report DTE speed only
Report line speed, error correction protocol,
and DTE speed.
Report DCE speed only
Hayes Smartmodem 300 compatible
responses/blind dialing.
Same as X0 plus all CONNECT
responses/blind dialing
Same as X1 plus dial tone detection
Same as X1 plus busy detection/blind dialing
All responses and dial tone and busy signal
detection
Reset and retrieve active profile 0
Reset and retrieve active profile 1
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