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U-90E Data/Fax Modem
Command
&Dn
&F
&Gn
&Hn
&Kn
&Ln
5-8
Options
Function & Description
&C1 *
CD tracks presence of carrier (See also
S38.3, S42.7)
Data Terminal Ready (DTR) options. (See
also S25)
&D0
Ignore DTR signal, assume DTR is always
ON.
&D1
108.1, DTR OFF-ON transition causes dial
of the default number. (See also 'AT*Dn'
and S48.4)
&D2 *
108.2, Data Terminal Ready, DTR OFF
causes the modem to hang up.
&D3
Same as &D2 but DTR OFF causes the
modem to hang up and reset from profile 0.
Load factory settings to RAM as active
configuration.
Guard tone options
&G0 *
No guard tone (within USA, Canada).
&G2
1800 Hz guard tone.
Data flow control, DTE/DCE.
&H0
Flow control disabled.
&H3 *
Hardware (CTS/RTS) flow control
&H4
Software (XON/XOFF) flow control.
Modem error control and data compression. S27.0-2
&K0
No error control.(Same as AT&K)
&K1
MNP4 (See also S41.0).
&K2
MNP4+MNP5 (See also S38.5, S41.0).
&K3
V.42+MNP4.
&K4 *
V.42+V.42bis, compatible with &K2 (See
also S38.5).
&L0 *
Dial-up line
Ref.
S21.6-7
S28.4-5
S27.3-5
S14.2-3
AT Command Set Summary
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