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6–4
DTE RATE
DTR OPTIONS
DCD OPTIONS
+ FIXED AT&B1 Modem serial port speed is always fixed, no
matter what link rate (modem speed) is con-
nected. If S44.6=1 and a non-ARQ connec-
tion is made, DTE rate follows link rate as if
&B0 were set. (Default)
FOLLOWS
LINK RATE
AT&B0 Modem serial port speed is set in accordance
with the link rate. If S44.6=1, the DTE speed
is fixed at 38400 bps when the link speed is
above 9600, at 9600 when the link speed is
7200, and at link speed when it is below 7200.
Note: If you wish to keep your DTE rate fixed, you should choose a buff-
ered transfer. (see DATA FORMAT)
IGNORED AT&D0 The modem assumes that DTR is always ON
and ignores the DTR signal on the serial port.
108.1 AT&D1 An OFF-ON DTR transition causes the modem to
dial the number specified under the DEFAULT
DIAL of the MODEM OPTIONS submenu. An
ON-OFF transition disconnects the modem from
the line.
+ DTR / 108.2 AT&D2 An ON-OFF transition of the DTR signal will dis-
connect the modem from the line. (Default)
108.2 + RST AT&D3 Same as &D2 but DTR OFF also causes reset
from profile 0.
Note: Not all computers provide a DTR signal at their serial port connector.
If this is true for your computer (e.g., Apple Macintosh), you must
use the IGNORED setting (AT&D0).
+ TRACKS
CARRIER
AT&C1 DCD ON when a carrier is detected (see also
S38b3). If S42.7=1, DCD only pulses off for
0.5 sec when carrier loss occurs. (Default)
ALWAYS ON AT&C0 The modem forces DCD to always remain ON.