to press the START button, the caller can press a designated DTMF tone, which will activate the modem to report and subsequently be ordered to answer the fax call.
Setting Up EDR
The new EDR can be used at home where multiple phones are installed in parallel. Once this function is enabled, the modem will go into EDR mode after the ring disappears, and it will be able to detect the data/fax CNG tone and DTMF tones, and report them as different types of rings. The EDR settings are defined in
S51 Bit-mapped register: (default: 0)
Bits | Bin. | Dec. | Description |
(7,6) | 00 | 0 | Disable data CNG tone detection |
|
|
| (default). |
| 01 | 64 | Report RING for data CNG tone. |
| 10 | 128 | Report RING 1 for data CNG tone. |
| 11 | 192 | Report RING 3 for data CNG tone. |
(5,4) | 00 | 0 | Disable |
| 01 | 16 | Report RING for fax CNG tone. |
| 10 | 32 | Report RING 1 for fax CNG tone. |
| 11 | 48 | Report RING 2 for fax CNG tone. |
(3,2) | 00 | 0 | Disable DTMF tone detection (default). |
| 01 | 4 | Report RING for a DTMF tone. |
| 10 | 8 | Report RING <DTMF> for a DTMF |
|
|
| tone. |
| 11 | 12 | Reserved |
(1,0) | 00 | 0 | Disable EDR (default). |
| 01 | 1 | Report RING twice. |
| 10 | 2 | Report RING four times. |
| 11 | 3 | Report RING six times. |
