Chapter 3 - Class 1 Fax Commands
Table
|
| Action by | Action by |
Command | Respone | Local Modem | Remote PC |
AT+FCLASS=1 | OK | Set Class to 1 |
|
| RING | Detect Ringing | Dial, send CNG |
ATA |
| Off hook, |
|
|
| Send CED, | Get CED |
|
| Send V.21 carrier | Detect carrier |
| CONNECT | Send flags | Detect flags |
<CSIframe data> |
| Send CSI data | Receive FCS |
<DLE><ETX> |
| Send FCS |
|
| CONNECT | Send flags |
|
<DISframe data> |
| Send DIS data | Receive DIS |
<DLE><ETX> |
| Send FCS and flags |
|
| OK | Drop carrier |
|
AT+FRH=3 |
| Detect carrier | Sends V.21 carrier |
| CONNECT | Detect flags | Send flags |
| <TSI frame data> | Receive TSI | Send TSI frame |
| <DLE><ETX> | Receive FCS | Send FCS |
| OK | Accept FCS |
|
AT+FRH=3 | CONNECT |
|
|
| <DCS packet data> | Receive DCS | Send DCS frame |
| <DLER><ETX> | Receive FCS | Send FCS |
| OK | Accept FCS |
|
AT+FRH=3 | NO CARRIER | Detect loss of | Drop carrier |
|
| carrier |
|
AT+FRM=96 |
|
| Wait 75 msec. |
| CONNECT | Detect carrier | Send V.29 carrier |
| <TCF data> | Receive TCF | Send TCF data |
| <DLE><ETX> | Detect carrier loss | Drop carrier |
| NO CARRIER |
|
|
AT+FTH=3 |
| Send V.21 carrier | Detects carrier |
| CONNECT | Send flags | Detects flags |
<CFRframe data> |
| Send CFR frame | Receives CFR |
<DLE><ETX> |
| Send FCS |
|
| OK | Drop carrier |
|
AT+FRM=96 |
|
|
|
| CONNECT | Detect carrier | Send V.29 carrier |
| <page image data> | Receive page | Send page data |
| <DLE><ETX> | Detect carrier loss | Drop carrier |
AT+FRH=3 |
|
| Wait 75 msec. |
|
| Detects carrier | Sends V.21 carrier |
| CONNECT | Detects flag | Sends flag |
| <EOP frame data> | Receives EOP | Sends EOP packet |
| <DLE><ETX> | Receives FCS | Send CRC |
| OK | Accepts FTS |
|
AT+FRH=3 | NO CARRIER | Detects loss of | Drops carrier |
|
| carrier |
|
AT+FTH=3 |
| Send V.21 carrier | Detect carrier |
| CONNECT | Send flags | Detect flags |
<MCF frame data> |
| Send MCF frame | Receive MCF frame |
<DLE><ETX> |
| Send FCS |
|
| OK | Drop carrier |
|
AT+FRH=3 |
| Receives carrier | Send V.21 carrier |
| CONNECT | Detects flags | Send flags |
| <DCN frame data> | Receives DCN | Send DCN frame |
| <DLE><ETX> | Receives FCS | Send FCS |
| OK | Accepts FCS |
|
AT+FRH=3 | NO CARRIER | Detect loss of | Drops carrier |
|
| carrier |
|
ATH0 | OK | Hangs up |
|
MT3334SMI | 39 |
