DCP Operation
|
| Table |
|
| (1 of 2) |
|
| 392xPlus DCP LEDs |
|
|
|
Label | Color | Indicates |
|
|
|
Pwr | green | Power has been applied to the modem. |
|
|
|
Alrm | red | Flashing ± A major alarm has been detected in a remote 392xPlus modem. |
|
| ON ± A major alarm has been detected in the local modem. (For Health and Status |
|
| alarm conditions, refer to Table |
|
| chapter.) |
|
|
|
Diag | green | The modem is receiving diagnostic communications (either a command or a status poll). |
(3920Plus |
|
|
only) |
|
|
|
|
|
Test/142 | yellow | Flashing ± The modem is involved in a firmware upgrade. Normal operation is not |
|
| possible. |
|
| ON ± The modem is involved in a test. Normal operation is not possible. |
|
| OFF ± The modem is not involved in a test or firmware upgrade. |
|
|
|
Dial | yellow | Flashing ± The modem is attempting to establish a call over the dial network, or the |
|
| modem is in Dial Standby mode. |
|
| ON ± The modem has established a dial connection. |
|
| OFF ± A dial connection does not exist. |
|
|
|
RI/125 | green | A ringing signal is being received. |
(3921Plus |
|
|
only) |
|
|
|
|
|
Busy | yellow | The modem is placed in a forced busy condition and is |
(3921Plus |
|
|
only) |
|
|
|
|
|
Serv | yellow | The modem's dial line is connected to the carrier service line rather than the normally |
(3921Plus |
| assigned dial network. |
only) |
|
|
|
|
|
SQ | yellow | The receive telephone line signal is degraded or the modem's data path has been |
|
| blocked (SQ flashes). |
|
|
|
Rate | yellow | ON ± The modem is connected at a data rate lower than the data rate it is configured for. |
(3920Plus |
| OFF ± The modem is connected at its configured data rate. |
only) |
| |
|
| |
|
|
|
Front Panel | yellow | The modem is connected to the carrier's SDCP. |
(3921Plus |
|
|
only) |
|
|
|
|
|
November 1996 |
