363-206-295
Maintenance Description
Issue 1
December 1997
9-27
Tests
9
Transmission Tests
9
Technicians can use DDM-2000 OC-12 Multiplexer internal testing capabilities for
installation and manual troubleshooting. DS3 test signal generators and detectors
are integrated in the system, eliminating the need for external test equipment to
do DS3 transmission testing.
The DDM-2000 OC-12 Multiplexer lets technicians test specific signals and
system components. For example, technicians can manually enable the
integrated test signal generators and detectors for a DS3 low-speed interface.
These signal tests can be run selectively in the multiplex or demultiplex direction.
Refer to the
test-trmsn-t3
command in Section 11, "Commands and
Reports."
Operations Interface Tests
9
The DDM-2000 OC-12 Multiplexer also provides tests for LED indicators, office
alarms, and the system controller. Refer to the
test-led
,
test-alm
, and
test-sysctl
commands in Section 11, "Commands and Reports."
Performance Monitoring (PM)
9
The DDM-2000 OC-12 Multiplexer uses PM to support proactive maintenance
and tariff verification of the network. Proactive maintenance refers to the process
of detecting degrading conditions not severe enough to initiate protection
switching or alarming but indicative of an impending hard or soft failure. Hard and
soft failures result in reactive maintenance.
Proactive maintenance consists of monitoring performance parameters
associated with the SONET sections, lines, and paths within the SONET network.
Table 9-4 lists the SONET and DS3 performance parameters monitored by the
DDM-2000 OC-12 Multiplexer. These parameters are thresholded to indicate
degraded performance. When a PM threshold is crossed, it is reported to the OS
connected to an TL1/X.25 link. All threshold crossings associated with a particular
path can be correlated, and the likely source of the degradation can be identified.
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
Страница 506: ...INS PROG 8 of 8 Page INS PROG COMMANDS RELATED rtrv eqpt rtrv ne OC 12 DDM 2000 1997 December 1 Issue 11 89 ...
Страница 528: ...RTRV ATTR ALM 2 of 2 Page RTRV ATTR ALM COMMANDS RELATED set attr alm OC 12 DDM 2000 1997 December 1 Issue 11 111 ...
Страница 565: ...RTRV OC3 3 of 3 Page RTRV OC3 COMMANDS RELATED rtrv sync 11 148 1997 December 1 Issue OC 12 DDM 2000 ...
Страница 664: ...SET FEAT 3 of 3 Page SET FEAT COMMANDS RELATED rtrv feat OC 12 DDM 2000 1997 December 1 Issue 11 247 ...
Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
Страница 1145: ...Order Circuit 363 206 295 NTP 029 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1146: ...Order Circuit 363 206 295 NTP 030 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1182: ...Turnup System 363 206 295 NTP 033 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1243: ...Clearing Trouble 363 206 295 TAP 107 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1393: ...363 206 295 DLP 513 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1394: ...363 206 295 DLP 514 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1456: ...363 206 295 DLP 523 7 of 7 Page 1997 December 1 Issue OC 12 via Access Broadcast Video for Cross connections of Example 4 Figure ...
Страница 1465: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 2 Page Schematic Ring Virtual ATM Sample 1 Figure ...
Страница 1469: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 6 Page Ring Virtual ATM OC 12 DDM 2000 for Cross connections of Example 4 Figure ...
Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...