User Manual

User's Manual
4
A Answer
The modem will go off-hook and attempt to answer an incoming call. Upon successful
completion of handshake, the modem will go on-line in answer mode.
Notes:
If +FCLASS=0 is selected, the modem will enter the connect state after exchanging carrier with
the remote system. If no carrier is detected within the period specified in S7, the modem hangs
up. Any character entered while connecting will abort the connection process.
If +FCLASS=1, the modem will go off-hook in V21 answer mode. It will generate the V21 2100
Hz answer tone for 3 +/- 0.5 seconds, and following a delay of 70 ms, will proceed as if the
+FTH=3 command were issued. At any stage up to (but excluding) the +FTH=3 command state,
any character will abort the communication.
If +FCLASS=8 (#CLS=8), the modem will go off-hook and a voice session will take place.
Related S-Reg: S0
Bn CCITT Control
B0 Connect at V.22 1200 bps
Result codes:
OK n=0
Error Otherwise
Dn Dial
Directs the modem to go on-line, dial according to the string entered, and attempt to establish a
connection.
The Dial String may consist of any of the characters described below:
* T Tone dialing (first character in the string)
P Pulse dialing (first character in the string)
L Redial last dialed number (first character in the string)
0-9 Digits 0 to 9.
* Asterisk (tone only)
# Hash (tone only)
W Wait for dial tone; the modem will wait for dial tone before dialing the digits following
“W”. S6 register will be used for timeout. (X3 or higher)
, (Comma); Pause for the time specified by S8 before resuming the dialing
; (Semicolon) Return to command mode after dialing. This allows the user to issue
additional AT commands while remaining off-hook. Actual call progress will be entered
only after a dial command issued without the “;” terminator.
S=n Dial the number stored in the directory; n=0-3 (see &Z).
! Flash; The modem will go on hook for a time defined by S24.
@ Wait for silence; The modem will wait for at least 5 seconds of silence before resuming
the dialing. If no such silence is detected before the expiration of the call abort timer (S7),
the modem will terminate with NO ANSWER response (or BUSY if applicable). If
answer tone arrives during execution of this parameter, the modem handshakes. (X3 or
higher)
(),< > (space) String format characters - ignored
<i> any other character - ignored.
Notes:
If +FCLASS=0 is selected, the modem will attempt to connect with another data modem. The
modem will use the time period specified in S6 and S7 as time-outs in the handshake process. If
a timeout expires, the modem will go on-hook and respond with NO CARRIER response. The
command will be aborted in progress is a DTE character is entered before completion of the
handshake.