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Chapter 3 – Fax Class 2 Commands
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 98
Originate and send a two page facsimile with V.34 half-duplex (Class 2.1)
Optional T.30 frames are omitted. +FNR=1,1,, +FIS and +FCS subparameters other than BR and EC
are not shown.
Host
Commands
Modem
Responses
Local Modem
Action
Remote Station
Action
Notes
AT+FCLASS=2.1 OK Set class 2
AT+FIS=,B,,,,3,,, OK
Set for Rec. V.34,
Annex A/T.30,
Annex C/T.30 or
Annex F/T.30
ATD<dial string>
+FCO
+FIS:,B,,,,1,,,
OK
off-hook, dial,
send CNG
detect ANSam
send CM
get JM
send CJ
negotiate Rec. V.34
begin control chan
get DIS
detect ringing
answer
detect CNG
send ANSam
get CM
send JM
get CJ
negotiate Rec. V.34
begin control chan
send DIS
(“Chan” = channel)
Rec. T.30 selected
with
JM signal from
remote terminal
the remote indicated
28
800 bit/s ability
AT+FDT
<1st page data>
<DLE><mps>
+FCS:,9,,,,1,,,
CONNECT
OK
send DCS
get CFR
switch to primary
chan
send page FCD
switch to control
chan
send MPS
get MCF
get DCS
send CFR
switch to primary
chan
get page data
switch to control
chan
get MPS
send MCF
in this example,
24
400 bit/s is
selected
AT+FDT
<2nd page data>
<DLE><eop>
CONNECT
+FHS:00
OK
switch to primary
chan
send page 2 FCD
switch to control
chan
send EOP
get MCF
send DCN
hang-up
switch to primary
chan
get page 2 FCD
switch to control
chan
get EOP
send MCF
get DCN
hang-up