![](/images/new-backgrounds/1173373/173373261x1.webp)
Command | bit | dec | hex | Function and description | Ref. |
|
|
|
| number | S29 |
| 3 | 8 | 8 | DCD ON/OFF sequence | &C1 |
|
|
|
| follows UNIX standard, DCD | S21.4 |
|
|
|
| high before connect message is |
|
|
|
|
| sent, DCD off after last DCE |
|
|
|
|
| response is sent |
|
| 4 | 16 | 10 | &N0 | |
|
|
|
| disabled |
|
| 5 | 32 | 20 | Disable MNP5 | &Kn |
S39= | bit | dec | hex | Bit mapped register | +000 |
| 2 | 4 | 4 | Answer in originating mode | ATA |
| 3 | 8 | 8 | Class 2 Fax Bitfax compatibility: |
|
|
|
|
| +FCON at 2400 next phase at |
|
|
|
|
| 19200 |
|
| 4 | 16 | 10 | Class 2 Fax mode DTE shifting: |
|
|
|
|
| +FCON at current DTE, shift to |
|
|
|
|
| 19,200 when entering into the |
|
|
|
|
| next phase |
|
| 5 | 32 | 20 | Disable srambler/descrambler in |
|
|
|
|
| V.26bis mode. Enables |
|
|
|
|
| compatibility with older V.26bis |
|
|
|
|
| modems which have no such unit |
|
|
|
|
| (default) |
|
S40= | bit | dec | hex | Bit mapped register | +000 |
| 1 | 2 | 2 | No result code displayed in | Q2 |
|
|
|
| answer mode |
|
| 2 | 4 |
| Enables caller ID detection |
|
| 3 | 8 |
| Enables type 1 ring detection |
|
| 4 | 16 |
| Enables type 2 ring detection |
|
| 5 | 32 |
| Enables type 3 ring detection |
|