Installation
Figure 3-15. Shared Diagnostic Unit Circuit Card, Rear View
|
| Table |
|
| Shared Diagnostic Unit Status Indicators |
|
|
|
Label | Color | Description |
|
|
|
OK | green | Normal operation. |
|
|
|
Alrm | red | Fault in SDU. |
|
|
|
Diag In | yellow | Incoming message from NMS (to a DSU, DBM, or Model 3811 or Model 3911 |
|
| modem in the carrier). |
|
|
|
Diag Out | yellow | Outgoing message to NMS (from a DSU, DBM, or Model 3811 or Model 3911 |
|
| modem in the carrier). |
|
|
|
December 1994 |
