Chapter 6. Diagnostics
6-10
OSU 300 User Manual
61200663L1-1
Payload Loopback
During this test, all data for the selected DSX-1 interface is looped
back to the far-end unit. The end result is all DSX-1 interfaces of the
far-end unit are looped back. All other ports are unaffected. See
Figure 6-14 for an illustration of this test.
Figure 6-14. Payload Loopback Test
DTE Loopback
During this test, the combined information from the four DSX-1
interfaces is locally looped at the multiplexer of the OSU 300 back
towards the Quad DSX-1 interface card. The end result of this test is
OSU 300
OSU 300
T3
DSX-1
Quad DSX-1
DS3 MUX
DS3 MUX
Local port in
Payload Loopback
Far-end unit
in Data Mode
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Страница 104: ...Appendix C Acronyms Abbreviations C 4 OSU 300 User Manual 61200663L1 1...
Страница 116: ...Appendix D Glossary D 12 OSU 300 User Manual 61200663L1 1...
Страница 122: ...Index Index 6 OSU 300 User Manual 61200663L1 1...