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
AT+FRH=3 NO CARRIER detect loss-of-carrier drop carrier
AT+FTM=96
<page image data>
<DLE><ETX>
CONNECT
OK
send V.29 carrier
send page data
drop carrier
detect carrier
receive page
AT+FTS=8;
+FRH=3
<EOP frame data>
<DLE><ETX>
CONNECT
OK
wait 80 ms
send V.21 carrier
send flags
send EOP frame
send FCS
drop carrier
detect carrier
detect flags
receives EOP
final frame
AT+FRH=3
CONNECT
<MCF frame data>
<DLE><ETX>
OK
detect carrier
detect flags
get MCF frame
check FCS
accept FCS
send V.21 carrier
send flags
get MCF frame
send FCS
Final frame bit set.
frame OK
AT+FRH=3 NO CARRIER detect loss-of-carrier drop carrier
AT+FRH=3
<DNC frame>
<DLE><ETX>
CONNECT
OK
send V.21 carrier
send flags
send DNC frame
send FCS
drop carrier
detect carrier
detect flags
receive DC|NC
final frame
ATH0 OK hang up hang up
Table 4-5. Fax Class 1 Answering Sequence (Receiving a Single Page)
DTE Commands Modem Responses Local Modem Action Remote Station Action Notes
AT+FCLASS=1 OK Set Class 1
RING<- detect ringing dials [,send CNG]
ATA
<CSI frame data>
