Synxcom SM9234D, User Manual

Page: 164 / 216

AT Commands
Page 164
Command: +FLO=?
Response: +FLO: (<method>range)
Example: +FLO: (0-2)
Result Codes
OK <method> = 0-2.
ERROR Otherwise.
Examples
Examples of calling (transmitting) and answering (receiving) one page using fax
class 1 commands are shown in Table A-20 and Table A-21, respectively. The
examples show the interchange between the DTE and the modem for various
cases. Comments are included to explain how to handle various situations.
Commands and responses are in upper case (e.g., AT+FRH=3) and comments are
in lower case. All streams of data denoted by <..frame> are terminated by the
<DLE><ETX> characters.
Table A-20. Fax Class 1 Calling Sequence (Transmitting a Single Page)
DTE Commands
Modem
Responses
Local Modem Action
Remote Station
Action
Notes
AT+FCLASS=1 OK Set Class 1
ATDT<string>
CONNECT
<NSF frame>
<DLE><ETX>
OK Dial and send CNG Look
for V.21
Detect flags Answer
send CED, V.21
Send HDLC flags
Send NSF frame
AT+FRH=3
implied by dialing with
+FCLASS=1.0
AT+FRH=3
CONNECT
<CFI frame data>
<DLE><ETX>
OK
Detect flags
get CSI
get FCS
accept FCS
send CSI frame
check FCS
Frame status OK
AT+FRH=3
CONNECT
<DIS frame data>
<DLE><ETX>
OK
Detect flags
get DIS
get FCS
accept FCS
send DIS frame
check FCS
DTE must detect final
frame bit to anticipate loss
of carrier
AT+FRH=3 NO CARRIER detect loss-of-carrier drop carrier
AT+FRH=3
<TSI frame data>
<DLE><ETX>
<DCS frame data>
<DLE><ETX>
CONNECT
CONNECT
OK send V.21 carrier
send flags
send TSI frame
send FCS
send flags
send DCS frame
send FCS, flags
drop carrier detect carrier
detect flags
get TSI frame
get DCS frame Final frame bit clear tells
the modem to expect
another frame. Final
frame bit set tells the
modem not to expect
another frame
AT+FTS=8;
+FTM=96
<TCF data pattern>
<DLE><ETX>
CONNECT
OK wait 80 ms
send V.29 carrier
send TCF data
drop carrier
detect carrier
get TCF data
AT+FRH=3
CONNECT
<CFR frame data>
<DLE><ETX>
OK detect carrier
detect flags
get CFR frame
check FCS
accept FCS send V.21 carrier
send flags
get CRF frame
send FCS
Final frame bit set.
frame OK