104
Appendix
&Tn n
= 4 or 5 Respond to Remote Digital Loopback Signal
&T4 Enable response to remote digital loopback signal.
*** &T5 Disable response to remote digital loopback signal.
$Tn n
= 0 or 1 Calling Tone
$T0 Enable calling tone.
*** $T1 Disable calling tone.
#Tn n
= 0 or 1 Trellis-Coded Modulation
#T0 Disable trellis-coded modulation.
*** #T1 Enable trellis-coded modulation.
Un n
= 0–3 Loopback Test Modes
U0 Enable analog loop originate mode.
U1 Enable analog loop answer mode.
U2 Enable remote digital loopback mode.
U3 Enable local digital loopback mode.
Vn n
= 0 or 1 Result Codes (Verbose/Terse)
V0 Result codes sent as digits (terse response).
*** V1 Result codes sent as words (verbose response).
#Vn n
= 0 or 1 V.32terbo Handshake
*** #V0 Enable V.32terbo tones in answer mode.
#V1 Disable V.32terbo tones in answer mode.
W
In dialing Wait for New Dial Tone
command Causes modem to wait for new dial tone. (
X2
or
X4
must be selected.)
&Wn n
= 0 or 1 Store Configuration
&W0 Store current settings in NVRAM; modem will load these at power-on or with the
ATZ
command instead of reading factory ROM defaults.
*** &W1 Do not store settings.
Xn n
= 0–4 Result Codes and Call Progress Selection
*** X0 Basic result codes (
CONNECT
only); does not look for dial tone or busy.
X1 Extended result codes (w/
CONNECT 1200, CONNECT 2400
, etc.); does not
look for dial tone or busy signal.
X2 Extended result codes with
NO DIAL TONE
; does not look for busy signal.
X3 Extended result codes with
BUSY
; does not look for dial tone.
X4 Extended result codes with
NO DIAL TONE
and
BUSY
.
#Xn n
= 0 or 1 Number of XOFF Characters Sent
*** #X0 Single XOFF character sent after buffer is full.
#X1 Multiple XOFF characters sent (one for every character received after buffer is
full).
Yn n
= 0 or 1 Long Space Disconnect
*** Y0 Disable sending or responding to long space break signal on disconnect.
Y1 Enable sending or responding to long space break signal on disconnect. (Both
modems must have
Y1
set.)
Z
n/a Modem Reset
Reset modem to default values. Defaults come from NVRAM if
&W0
is set, from ROM
if
&W1
is set.
,
In dial Dialing Pause
command Comma; causes dialing pause for time set by
S8
.