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COMSPHERE DualFlow Data Service Units
2-12 December 1996 3615-A2-GB20-20
Verifying the Network
Perform
a Health and Status check on the DDS circuit
to ensure that the network is functioning.
. Procedure
1.
Select
Local (F1).
2.
Select
Stat (F1).
3.
Select
H/S (F1).
4.
Select
Devic (F1).
5.
Press the
key to return to the top-level menu.
6.
Select
Local (F1).
7.
Select
Bckup (F2).
8.
Select
DrBU to drop the backup call.
No error messages should appear
. Refer to
Appendix C, the
Device Health and Status Messages
section, should there be a problem with the DDS Line.
Other Tests
The
following lists the tests available on your DSU.
Refer to the T
est Branch
section of Chapter 4 for further
test information, as well as more detail on how to
configure and operate the DSU. Refer to Appendix A to
determine how best to access each test.
•
Device T
est (Devic)
•
Local Loopback
(LL) – DSU only
•
DTE Loopback
(DTE)
• Digital Loopback (DL)
• Remote Digital Loopback (RL) – DBM only
• Bilateral Loopback
• Digital T
est
(DT) – DBM only
• End-to-End Test (EE) – DBM only
•
Bit Err
or Rate T
est (BERT)
•
Lamp T
est (Lamp)