US Robotics COURIER - Transferring Calls (!); Wait for an Answer(@)

COURIER HIGH SPEED MODEMS
called Quote mode. Quotation marks are inserted at the begin-
ning of the alphabetic string:
ATDT"BBS NEWS <Enter>
NOTE: If you are including another command after the dial
string,
use closing quotation marks before the additional
command.
Transferring Calls (!)
This command applies to modems in installations where other
modems share the phone line. The modem flashes the switch-
hook, i.e., goes off hook 0.5 seconds, on hook for 0.5 seconds, and
off hook again to dial the specified extension. The following
example includes instructions to return to Command mode (;)
and to hang up (H).
ATDT !1234;H <Enter>
Wait for an Answer (@)
Some online services answer the phone and return a tape-
recorded request for information before processing transactions.
In such instances, the @ command can be used in the Dial string
to tell the modem to detect at least one ring, wait for five seconds
of silence at the other end of the call, and then continue to exe-
cute the Dial string.
To
use the@ command, set the modem to X3, X4 or X7. If the
modem is set to X2 or lower, the modem returns an ERROR
message when encountering the@ character in a command
string. If set to XS or X6, the modem hangs up when it detects a
voice
answer and sends the VOICE result code.
In the next example, the modem is set to the X4 result code
option and dials a banking service. Each occurrence of@ in the
example indicates a five-second wait for silence, that is, for taped
requests from the bank for a password (12345), an account num-
ber (6789) and a transaction code (2). The transaction code might
indicate, for example, a request for an account balance.
ATX4 DT5551234@ 12345 @6789@ 2 <Enter>
If the necessary conditions do not occur-no rings, or no follow-
ing five seconds of silence-the modem times out as it normally
6-6 Asynchronous Operations
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