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Table 3. Modem command list (continued)
3: Upon connection, the modem
reports DCE speed and the error
correction protocol.
XX
X
Extended Result Codes
XX
X
<value> <value>
0: CONNECT result code is
given upon entering online
data state. Dial tone and busy
detection reporting are disabled.
1: CONNECT <text> result code
is given upon online data state.
Dial tone and busy detection
reporting are disabled.
2: CONNECT <text> result code
is given upon entering online
data state. Dial tone detection
reporting is enabled, and busy
detection reporting is disabled.
3: CONNECT <text> result code
is given upon entering online
data state. Dial tone detection
reporting is disabled, and busy
detection reporting is enabled.
4: CONNECT <text> result code
is given upon entering online
data state. Dial tone and busy
detection reporting are both
enabled.
&C&C
&C
RLSD Behavior
&C&C
&C
[<value>]
<value>
0: RLSD is always ON.
1: RLSD follows the state of the
carrier.
&D&D
&D
DTR Behavior
&D&D
&D
[<value>]
<value>
0: Modem ignores DTR.
1: Upon an on-to-off transition
of DTR, the modem enters online
command state and issues an
OK result code; the call remains
connected.
2: Upon an on-to off transition
of DTR, the modem instructs the
underlying modem to perform
an orderly cleardown of the call.
The disposition of any data in the
modem pending transmission to
the remote modem is controlled
by the +ETBM parameter;
otherwise, this data is sent
before the call is cleared, unless
the remote modem clears the
call rst (in which case pending
data is discarded). The modem
disconnects from the line.
Chapter 2. Using your computer 55