6 8
E1*
Fn
F0
F1*
Hn
H0*
H1
In
I0
I2
I3
I4
I9
Ln
L0
L1
L2*
L3
Mn
M0
M1*
M2
M3
Nn
N0
N1*
On
O0
O1
O3
P
Qn
Q0*
Q1
T
Vn
V0
V1*
Wn
W0
W1
W2*
Xn
X0
X1
X2
X3
X4*
X5
X6
X7
Yn
Y0
Zn
Z0
Local Character echo ON (modem displays keyboard commands).
On-Line Echo Command. This is a non-functional command for
compatibility across modems.
Function enabled (NOT SUPPORTED, ERROR).
Local echo OFF (remote system may send a remote echo of data it receives).
Switchhook Control - Provides control over the line relay.
Modem goes on-hook (hangs up).
Goes off-hook.
Identification/Checksum Options - Displays the following information
about the modem:
Returns default speed and controller firmware version (same as I3).
Performs a ROM check and calculates and verifies the checksum displaying
OK or ERROR.
Returns default speed and controller firmware version (same as I0).
Returns data pump status code.
Returns country code (e.g., NA Ver. 1).
Speaker Volume Control. Sets speaker loudness.
Selects low volume.
Selects low volume.
Selects medium volume.
Selects high volume.
Speaker Control. Determines whether the modem’s speaker function is on
or off.
Speaker always off.
Speaker on until carrier present.
Speaker always on when the modem is off-hook.
Speaker on until carrier detected, except while dialing.
Modulation handshake. Controls whether or not the local modem performs
a negotiated handshake at connection time with the remote modem .
When originating or answering, handshake only at the communication rate
specified by S-Register S37 and the ATB command.
When originating or answering, start handshake only at the communication
standard specified by S-Register 37 and ATB. During handshake, fallback
to a lower speed may occur except in \N1 mode.
Return to Online Data Mode. Returns from command mode to data mode.
Instructs the modem to exit on-line command mode and return to (see AT
Escape Sequence, +++).
Retrain and return to online data mode.
Issues a rate renegotiation before returning to on-line data mode.
Select Pulse Dialing. Configures the modem to use pulse dialing. Dialed
digits are pulse-dialed until a T-command or dial modifier is received (e.g.,
ATDT). Tone dial is the default setting.
Result Code Display Option. Controls whether the result codes are displayed
to the DTE.
Result codes enabled.
Result codes disabled.
Enable Tone Dialing. Instructs the modem to use DTMF tones while dialing.
Dialed digits are tone-dialed until a P-command or dial modifier (ATDP)
is received.
DCE Response Format Controls whether result codes (including call
progress and negotiation progress messages) are displayed as words or
their numeric equivalents.
Displays result codes as digits.
Displays result codes as text. (OK for OK)
Select Extended Result Codes - Determines which result codes will describe
the type of connection and protocol that results from handshaking and
negotiation.
CONNECT result code reports DTE speed. Disable protocol result codes.
CONNECT result code reports DTE speed. Enable protocol result codes.
CONNECT result code reports DCE speed. Disable protocol result codes.
Select Result Codes/Call Progress Options - Sets the result code displayed
according to the following matrix:
Dial tone and busy signal detection not selected; CONNECT response
messages displayed for all speeds.
Dial tone and busy signal detection not selected; appropriate CONNECT
response messages or codes displayed for data rate.
Dial tone detection only; NO DIAL TONE message or code appears if dial
tone not detected within 5 seconds.
Busy signal detection only; BUSY message or code appears if dialed number
is busy.
Dial tone and busy signal detection; appropriate CONNECT message or
code displayed.
Dial tone and busy signal detection; appropriate CONNECT message or
code displayed.
Dial tone and busy signal detection; appropriate CONNECT message or
code displayed.
Dial tone and busy signal detection; displays only the basic result codes.
Ensures compatibility with previous generation modems.
Ensures compatibility with lower speed modems.
Recall Stored Profile. Instructs the modem to go on-hook and restore the
profile saved by the last &W command.
Reset to user-specified profile.
