Verifying Dbm Operation; Verifying Tdm/Flex Operation - Paradyne COMSPHERE 3550 Series User Manual

COMSPHERE 3550 Series Data Service Units

Verifying DBM Operation

If a DBM is installed, test the tributary DBM for
dial tone, and verify that the DSU can place and receive
calls.
"
Procedure
1. Select Bckup (F2).
2. Select Dial to establish a dialed call to the
tributary.
(Refer to Chapter 4
telephone numbers.)
3. Select !Dial to switch to the dial circuit.
4. Perform a Digital Test following the DBM path
rather than the DSU path.
(No error message should appear.)
5. Select DrBU to drop the backup call.
6. Perform a Digital Test on the DBM. Follow the
Verifying the Network procedure, selecting DBM
instead of DSU (Step 2).

Verifying TDM/Flex Operation

If a TDM/Flex is installed, perform a Digital Test on
each port.
2-12
for the procedure for entering
Other Tests
The following lists the tests available on your DSU.
Refer to the Test Branch
test information, as well as more detail on how to
configure and operate the DSU. Refer to
determine how best to access each test.
Device Test (Devic)
Local Loopback (LL)
DTE Loopback (DTE)
Digital Loopback (DL)
Remote Digital Loopback (RL)
Bilateral Loopback
Digital Test (DT)
End-to-End Test (EE)
Bit Error Rate Test (BERT)
Lamp Test (Lamp)
July 1999
section of Chapter 4 for further
Appendix A
3550-A2-GB20-40
to