Installing the Model 3551 DSU
To Connect the SDCP to a DSU
For the
.Procedure
1.Press the Select key (refer to Figure
Carr:Slot: |
| 1: 01 A |
|
| 1:0 2 A |
F1 | F2 | F3 |
The cursor is usually positioned under the second position of the slot number (1:0 1 ).
In this example, the first line shows
1 indicates Carrier 1 (Carr)
01 indicates the DSU in Slot 1
A is reserved for future use
On the second line
Press the F1 key ( ↑ ) to increment the number that the cursor is on.
Press the F2 key ( ↓) to decrement the number.
Press the 
and 
keys to move the cursor one position to the left or right, to change either the carrier or slot number.
Press the F3 key to toggle between DSUs, to switch from 1:01A to 1:02A in this example. (In our example, the previously accessed DSU was located in Slot 2 of Carrier 1.)
2.Press the Select key on the SDCP again.
The SDCP accesses the DSU in Carrier 1, Slot 1. The
1: 01 A | DSU | 9.6 C |
Local | Remot |
|
F1 | F2 | F3 |
From the first line of this example, you can see that this is a
9.6 kbps, and is configured as a control (C).
From the second line you can see that there are no NMS messages (no Msg branch over the F3 key) waiting to be read and cleared.
Also note that the SDCP indicator on the selected DSU's faceplate, Front Panel, is lit.
Verifying Network Addresses, the Network, and DBM Operation
Access the DSU's identity (ID) subbranch for each tributary DSU to ensure that the DSUs are properly addressed.
Perform a Digital Test on the DDS circuit to ensure that the network is functioning.
If a DBM is installed, perform the Digital Test by selecting DBM from the Run Test from screen instead of DSU. Next, test the tributary DBM for dial tone, and verify that the DSU can place and receive calls.
Refer to the Verifying Operation and Testing Connections section of Chapter 2 for procedures that lead you through each of these procedures.
December 1996 |
