363-206-295
Operations Interfaces
Issue 1
December 1997
6-13
Office Alarms
6
The DDM-2000 OC-12 Multiplexer provides relay contacts for wiring to the office
audible and visual alarms. Contacts are provided for each alarm condition: CR
(critical), MJ (major), and MN (minor).
The MJ and CR contact closures are designed to allow these office alarms to be
ORed together and reported as an office MJ alarm.
The CR alarms are fail-safed against power failures. They are activated even if the
shelf loses both power feeders.
The audible office alarms for a given site are silenced through activation of the
ACO function. Visual alarms are not extinguished by the ACO function.
An alarm hold-off delay is provided, to prevent transient failures from causing
unnecessary maintenance activity. The office alarms will not be activated unless a
condition of greater duration than the alarm hold-off delay occurs. When a failure
clears, an alarm clear delay prevents premature clearing of the alarm.
As with the user panel indicators, when multiple alarms are active, the highest
level office alarm (audible and visual) is activated. When the highest level alarm
clears, the office alarm "bumps down" to the next highest level active alarm.
If the ACO function has been activated to silence all active audible alarms, then
when a "bump down" occurs the audible alarms remain silent. (That is, the lower
level visual alarm is activated, but the corresponding audible alarm is not re-
activated.) If another alarm occurs while the ACO is active, the highest level
audible alarm is activated even if the new alarm is a lower level condition. (For
example, if a MJ and MN alarm were active and silenced via the ACO and another
MN alarm occurred, the MJ audible alarm would sound.)
See Section 8, "Administration and Provisioning," for more information.
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 ...
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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 ...