363-206-295
Technical Specifications
10-40
Issue 1
December 1997
DDM-2000 OC-12 System Reliability Predictions
1
0
Example:
The unavailability of one two-way DS3 channel within one DDM-2000 OC-12 system configured to
multiplex DS3 to OC-12, located in an uncontrolled environment, is 0.499 minutes per year (that is,
fraction of time per year when the DS3 channel is unavailable). The mean time between outage of
the DS3 channel is 483 years (that is, average length of time until a DS3 outage occurs).
Notes
:
1. Hardware failure rates are calculated per the RPP method, TR-NWT-000332, Issue 4,
"Reliability Prediction Procedure."
2. The environmental factor for the CO = 1.0 and for the RT = 1.5, per TR-NWT-000332, Issue 4,
"Reliability Prediction Procedure."
3. Bellcore criteria (Outage Requirements and Objectives) is based on TA-TSY-000418, Issue 3,
"Generic Reliability Assurance Requirements for Fiber Optic Transport Systems." Outage is in
minutes per year.
4. Mean time to repair is assumed to be 2 hours for the CO and 4 hours for RT environment.
Table 10-21. DDM-2000 OC-12 System Reliability Prediction (Note 1)
Application
Environment
(Note 2)
Bellcore Criteria (Note 3)
Prediction
(Outage,
min/yr)
MTBF
Years
(Note 4)
Requirement
Objective
DS3 to OC-12
DS3 to OC-12
CO
RT
1.75
5.25
0.25
0.75
0.163
0.499
736
483
EC-1 to OC-12
EC-1 to OC-12
CO
RT
1.75
5.25
0.25
0.75
0.253
0.764
473
314
OC3 to OC-12
OC3 to OC-12
CO
RT
1.75
5.25
0.25
0.75
0.0015
0.0131
61,900
13,760
OS Interface TL1/X.25
CO
14
7.1
16.9
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 ...
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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 ...
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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 ...