363-206-285
Maintenance Description
9-58
Issue 3
June 2001
Unavailable Seconds (UAS)
9
A UAS is a second during which the OC-3 or OC-12 line is "unavailable." A line is
considered "unavailable" from the beginning of X consecutive SESs until the
beginning of Y consecutive seconds, none of which is severely errored. An X is
equal to 10 seconds or, in the case of a failure, the line signal failure. A Y is equal
to 10 seconds of no SES or line signal failure. If there is an unprotected circuit
pack failure, UAS are counted from within 1 second of circuit pack failure to within
1 second of circuit pack recovery. UAS are counted and thresholded
independently for the service and protection lines.
Line Protection Switch Counts
9
Line protection switch count is the count of the number of protection switches
FROM the working line. The count is independently counted and thresholded for
both the service and the protection line. This does not apply to main OC-N lines in
ring releases.
STS Pointer Justification Count (PJC)
9
This feature provides a TCA from a DDM-2000 shelf when the STS pointer
justification count in a performance bin exceeds a user provisioned threshold
value. STS PJCs for each SONET line interface are accumulated in 15 minute
and 24 hour performance monitoring bins. The TCA is sent via a TL1 autonomous
message to the OS and is available through CIT and TL1 PM reports. PJCs are
not accumulated during one second intervals in which an STS-1 is in the LOP or
AIS state.
For each SONET line interface, the system accumulates counts from only one
STS-1 tributary during a 1 second monitoring interval. Excessive pointer
justifications indicate a frequency error in the network or other potential
synchronization problem. For example, a frequency error could be caused by a
shelf in holdover or by a frequency offset in an external timing reference in
networks with more than one shelf externally timed. The TCA can be provisioned
in the frequency offset range from approximately .01 ppm to 10 ppm by setting a
threshold for the pointer justification count equivalent to the frequency offset.
Summary of Contents for DDM-2000 OC-3
Page 4: ......
Page 14: ...xiv Issue 3 June 2001 Contents GL Glossary GL 1 ...
Page 24: ...xxiv Issue 3 June 2001 Figures ...
Page 28: ...Tables xxviii Issue 3 June 2001 A A SONET Overview A 34 SONET Transport Rates A 20 ...
Page 58: ...363 206 285 About This Document lviii Issue 3 June 2001 ...
Page 60: ...1 ii Issue 3 June 2001 Table of Contents ...
Page 80: ...363 206 285 System Introduction 1 20 Issue 3 June 2001 ...
Page 154: ...3 ii Issue 3 June 2001 Table of Contents ...
Page 184: ...4 ii Issue 3 June 2001 Table of Contents ...
Page 252: ...363 206 285 Transmission and Synchronization Interfaces 5 60 Issue 3 June 2001 ...
Page 254: ...6 ii Issue 3 June 2001 Table of Contents ...
Page 278: ...7 vi Issue 3 June 2001 Table of Contents ...
Page 436: ...363 206 285 Circuit Pack Descriptions 7 158 Issue 3 June 2001 ...
Page 440: ...8 iv Issue 3 June 2001 Table of Contents ...
Page 518: ...363 206 285 Administration and Provisioning 8 78 Issue 3 June 2001 ...
Page 588: ...10 iv Issue 3 June 2001 Table of Contents ...
Page 690: ...363 206 285 Commands and Reports 11 20 Issue 2 February 2000 ...
Page 1252: ...11 582 2000 February 2 Issue OC 3 DDM 2000 ...
Page 1254: ...A ii Issue 3 June 2001 Table of Contents ...
Page 1276: ...363 206 285 A SONET Overview A 22 Issue 3 June 2001 ...
Page 1316: ......
Page 1348: ...363 206 285 Acceptance IXL 001 Issue 3 June 2001 Page 2 of 2 DDM 2000 OC 3 MULTIPLEXER ...
Page 1412: ...NTP 003 System Turnup 363 206 285 Page 6 of 6 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1420: ...363 206 285 System Turnup NTP 004 Issue 2 February 2000 Page 8 of 8 DDM 2000 OC 3 MULTIPLEXER ...
Page 1440: ...NTP 008 Circuit Order 363 206 285 Page 6 of 6 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1458: ...363 206 285 Circuit Order NTP 011 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
Page 1462: ...NTP 012 Circuit Order 363 206 285 Page 4 of 4 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1464: ...NTP 013 Circuit Order 363 206 285 Page 2 of 2 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1508: ...363 206 285 System Turnup NTP 020 Issue 2 February 2000 Page 8 of 8 DDM 2000 OC 3 MULTIPLEXER ...
Page 1512: ...NTP 021 Circuit Order 363 206 285 Page 4 of 4 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1528: ...363 206 285 Circuit Order NTP 023 Issue 2 February 2000 Page 8 of 8 DDM 2000 OC 3 MULTIPLEXER ...
Page 1560: ...363 206 285 Circuit Order NTP 025 Issue 2 February 2000 Page 8 of 8 DDM 2000 OC 3 MULTIPLEXER ...
Page 1574: ...363 206 285 Circuit Order NTP 027 Issue 2 February 2000 Page 4 of 4 DDM 2000 OC 3 MULTIPLEXER ...
Page 1610: ...363 206 285 Circuit Order NTP 030 Issue 2 February 2000 Page 8 of 8 DDM 2000 OC 3 MULTIPLEXER ...
Page 1616: ...363 206 285 Circuit Order NTP 031 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
Page 1622: ...363 206 285 Circuit Order NTP 032 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
Page 1634: ...363 206 285 System Turnup NTP 034 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
Page 1652: ...363 206 285 Circuit Order NTP 038 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
Page 1702: ...363 206 285 System Turnup NTP 041 Issue 2 February 2000 Page 8 of 8 DDM 2000 OC 3 MULTIPLEXER ...
Page 1744: ...NTP 045 System Turnup 363 206 285 Page 8 of 8 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1808: ...363 206 285 Circuit Order NTP 052 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
Page 1866: ...363 206 285 System Turnup NTP 057 Issue 3 June 2001 Page 12 of 12 DDM 2000 OC 3 MULTIPLEXER ...
Page 1884: ...363 206 285 System Turnup NTP 059 Issue 3 June 2001 Page 12 of 12 DDM 2000 OC 3 MULTIPLEXER ...
Page 1912: ...NTP 002 Operation 363 206 285 Page 2 of 2 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 2530: ...363 206 285 Page 2 of 2 Issue 3 June 2001 DDM 2000 OC 3 MULTIPLEXER ...