COMSPHERE DualFlow Data Service Units

Verifying Network Addresses, the Network, and DBM Operation

Establish a backup connection and perform a Digital Test over the backup connection to ensure that the switched network is functioning. Access the DSU's identity (ID) subbranch for the tributary DSU to ensure that the DSU is properly addressed.

Verify that no alarms appear in the Device Health and Status subbranches. Refer to the Verifying Operation and Testing Connections section of Chapter 2 for procedures that lead you through each of these procedures.

Other Tests

The following lists the tests available on your DSU. Refer to the Test 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 Test (Devic)

Local Loopback (LL) ± DSU only

DTE Loopback (DTE)

Digital Loopback (DL)

Remote Digital Loopback (RL) ± DBM only

Bilateral Loopback

Digital Test (DT) ± DBM only

End-to-End Test (EE) ± DBM only

Bit Error Rate Test (BERT)

Lamp Test (Lamp)

3-12

December 1996

3615-A2-GB20-20

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Paradyne 3615, 3616 manual Verifying Network Addresses, the Network, and DBM Operation, Other Tests