Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
19
Table 3. AT Command Set (Continued)
Function and Description
Command
#CID=
Caller ID
Options
This command controls how the modem displays North American caller
identification information. If Caller ID has been disabled in the country
configuration, the modem responds with an ERROR result code to a #CID=
command.
Caller ID information is displayed only when it is provided by the telephone
company, and only when the terminal data rate is 2400 bps or higher. Lower
data rates are too slow to display Caller ID information.
The modem receives Caller ID information between telephone rings. The
country configuration contains a parameter controlling whether the modem
uses Bell 202 or V.23 to receive Caller ID information.
#CID=0
This command does not display Caller ID information. This
option is the default value.
#CID=1
#CID=2
#CID=?
This command returns the information as formatted data.
This command returns the information as unformatted data.
This command returns the current setting of the
#CID=command.
D
Dial
The D command initiates a telephone call using the digits and dial modifiers in
the dial string following the command. Any commands following the dial string
on a command line are ignored, unless a semicolon is the last character in the
dial string. If the modem was already off-hook when the Dialcommand is
issued, the modem dials immediately without trying to detect a dial tone.
Characters other than digits and dial modifiers in a dial string are ignored;
however, ignored characters are counted in the command line buffer.
If line-current sensing is enabled and line current is detected before the modem
is taken off-hook when the modem must dial, a NO CARRIER result code is
displayed and the modem enters the IDLE state.
If the modem is not required to perform a dial function (for example, ATD with
no dial string), the modem assumes the call was manually established and
attempts to make a connection.
The X1 command may be used to disable the modem's need to detect dial tone
or busy tone before handshaking.
The D command is not valid when the modem is in the ON-LINE state or when
&Q2 or &Q3 is in effect.
See “Dial Modifiers” on page 34 for more information.
PS001907-0904
AT Command Set
ZILOG [ ZILOG, INC. ]
