📄 class_1.txt
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Command options:
+FTM=3 v.21 ch 2 300 bps
+FTM=24 v.27 ter 2400 bps
+FTM=48 v.27 ter 4800 bps
+FTM=72 v.29 7200 bps
+FTM=96 v.29 9600 bps
+FTM=73 v.17 7200 bps long
+FTM=74 v.17 7200 bps short
+FTM=96 v.29 9600 bps
+FTM=97 v.17 9600 bps long
+FTM=98 v.17 9600 bps short
+FTM=121 v.17 12000 bps long
+FTM=122 v.17 12000 bps short
+FTM=145 v.17 14400 bps long
+FTM=146 v.17 14400 bps short
+FRM=n Receive Data. +FRM=n causes the modem to enter the
receiver mode using the modulation defined below. An ERROR
response code results if this command is issued while the
modem is on-hook.
Parameters: See Command options
Command options:
+FTM=3 v.21 ch 2 300 bps
+FTM=24 v.27 ter 2400 bps
+FTM=48 v.27 ter 4800 bps
+FTM=72 v.29 7200 bps
+FTM=96 v.29 9600 bps
+FTM=73 v.17 7200 bps long
+FTM=74 v.17 7200 bps short
+FTM=96 v.29 9600 bps
+FTM=97 v.17 9600 bps long
+FTM=98 v.17 9600 bps short
+FTM=121 v.17 12000 bps long
+FTM=122 v.17 12000 bps short
+FTM=145 v.17 14400 bps long
+FTM=146 v.17 14400 bps short
+FTH=n Transmit data with HDLC Framing. +FTH=n causes the modem
to transmit data using HDLC protocol and the modulation
defined below. An ERROR response code results if this
command is issued while the modem is on-hook.
Parameters: See Command options
Command options:
+FTM=3 v.21 ch 2 300 bps
+FTM=24 v.27 ter 2400 bps
+FTM=48 v.27 ter 4800 bps
+FTM=72 v.29 7200 bps
+FTM=96 v.29 9600 bps
+FTM=73 v.17 7200 bps long
+FTM=74 v.17 7200 bps short
+FTM=96 v.29 9600 bps
+FTM=97 v.17 9600 bps long
+FTM=98 v.17 9600 bps short
+FTM=121 v.17 12000 bps long
+FTM=122 v.17 12000 bps short
+FTM=145 v.17 14400 bps long
+FTM=146 v.17 14400 bps short
+FRH=n Receive data with HDLC Framing. +FRH=n causes the modem to
receive frames using HDLC protocol and the modulation defined
below. An ERROR response code results if this command is
issued while the modem is on-hook.
Parameters: See Command options
Command options:
+FTM=3 v.21 ch 2 300 bps
+FTM=24 v.27 ter 2400 bps
+FTM=48 v.27 ter 4800 bps
+FTM=72 v.29 7200 bps
+FTM=96 v.29 9600 bps
+FTM=73 v.17 7200 bps long
+FTM=74 v.17 7200 bps short
+FTM=96 v.29 9600 bps
+FTM=97 v.17 9600 bps long
+FTM=98 v.17 9600 bps short
+FTM=121 v.17 12000 bps long
+FTM=122 v.17 12000 bps short
+FTM=145 v.17 14400 bps long
+FTM=146 v.17 14400 bps short
Table 6-3 Fax Class 1 Calling Sequence (One Page)
|----------------------------------------------------------------------|
| DTE Commands | DCE Responses | Remote Fax | Notes |
|--------------|------------------|-----------------|------------------|
| AT+FCLASS=1 | OK | | Set to Class 1 |
|----------------------------------------------------------------------|
| PHASE A |
|----------------------------------------------------------------------|
| ATDTx | dials | answers | +FRH=3 implied by|
| | | | dialing |
| | CONNECT | Send HDLC flags | |
|----------------------------------------------------------------------|
| PHASE B |
|----------------------------------------------------------------------|
| | | Send NSF frame | |
| | <NSF>,OK | | |
| AT+FRH=3 | CONNECT | | |
| | | Send CSI frame | |
| | <CSI>,OK | | |
| AT+FRH=3 | CONNECT | | |
| | | Send DIS frame | Last frame bit=1 |
| | <DIS>,OK | drop carrier | |
| AT+FTH=3 | Send HDLC flags | receive flags | |
| | CONNECT | | |
| <TSI> | Send TSI frame | Receive TSI | Last frame bit=0 |
| | CONNECT | | |
| <DCS> | Send DCS frame | Recieve DCS | Last frame bit=1 |
| | detect last frame| | |
| | bit | | |
| | <OK>,drop carrier| | |
| AT+FTS=8 | <OK>,wait 80ms | | |
| AT+FTM=96 | send v.29 | | |
| | CONNECT | | |
| <TCF> | Send TCF data | Receive & check | |
| AT+FRH=3 | CONNECT | | |
| | Send CFR frame | | Last frame bit=1 |
| <CFR>,OK | drop carrier | | |
| | OK | | |
|----------------------------------------------------------------------|
| PHASE C |
|----------------------------------------------------------------------|
| AT+FTM=96 | send v.29 | | |
| | CONNECT | | |
| age data | send page data | receive data | |
| | OK | | |
| AT+FTH=3 | send HDLC flags | receive flags | |
| | CONNECT | | |
|----------------------------------------------------------------------|
| PHASE D |
|----------------------------------------------------------------------|
| <EOP> | send EOP frame | receive EOP | Last frame bit=1 |
| | OK,drop carrier | | |
| AT+FRH=3 | CONNECT | | |
| | | send MCF frame | Last frame bit=1 |
| | <MCF>,OK | | |
| AT+FTH=3 | send HDLC flags | receive flags | |
| | CONNECT | | |
| <DCN> | send DCN frame | receive DCN | Last frame bit=1 |
| | OK,drop carrier | | |
|----------------------------------------------------------------------|
| PHASE E |
|----------------------------------------------------------------------|
| ATH0 | OK,hang up | hang up | |
|----------------------------------------------------------------------|
Table 6-4 Fax Class 1 Answering Sequence (One Page)
|----------------------------------------------------------------------|
| DTE Commands | DCE Responses | Remote Fax | Notes |
|--------------|------------------|-----------------|------------------|
| AT+FCLASS=1 | OK | | |
|----------------------------------------------------------------------|
| PHASE A |
|----------------------------------------------------------------------|
| | | Fax machine dial| |
| | RING | | |
| ATA | modem answers | | |
| | send HDLC flags | receive flags | +FTH=3 implied by|
| | | | answering |
| | CONNECT | | |
|----------------------------------------------------------------------|
| PHASE B |
|----------------------------------------------------------------------|
| <NSF> | send NSF frame | receive NSF | last frame bit=0 |
| | CONNECT | | |
| <CSI> | send CSI frame | receive CSI | last frame bit=0 |
| | CONNECT | | |
| <DSI> | send DSI frame | receive DSI | last frame bit=1 |
| | OK, drop carrier | | |
| AT+FRH=3 | CONNECT | | |
| | | send TSI frame | last frame bit=0 |
| | <TSI>,OK | | |
| AT+FRH=3 | CONNECT | | |
| | | send DCS frame | last frame bit=1 |
| | <DCS>,OK | drop carrier | |
| AT+FRM=96 | | | |
| | | send v.29 | |
| | CONNECT | send TCF frame | |
| | <TCF> | drop carrier | |
| | NO CARRIER | | |
| AT+FTH=3 | CONNECT | | |
| <CFR> | send CFR frame | receive CFR | last frame bit=1 |
| | OK,drop carrier | | |
|----------------------------------------------------------------------|
| PHASE C |
|----------------------------------------------------------------------|
| AT+FRM=96 | | | |
| | | send page data | |
| | <page data> | drop carrier | |
| | NO CARRIER | | |
|----------------------------------------------------------------------|
| PHASE D |
|----------------------------------------------------------------------|
| AT+FRH=3 | CONNECT | | |
| | | send EOP frame | last frame bit=1 |
| | <EOP>,OK | | |
| AT+FTH=3 | CONNECT | | |
| <MCF> | send MCF frame | receive MCF | last frame bit=1 |
| | OK,drop carrier | | |
| AT+FRH=3 | CONNECT | | |
| | | send DCN frame | last frame bit=1 |
| | <DCN>,OK | | |
|----------------------------------------------------------------------|
| PHASE E |
|----------------------------------------------------------------------|
| ATH0 | OK,hang up | hang up | |
|----------------------------------------------------------------------|
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