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DS1-BD (DS1 Interface Circuit Pack)
Issue 1 May 2002
8-613
555-233-143
Red Alarm Inquiry Test (#140)
DS1 Interface circuit pack raises a Red alarm when the framing pattern of the
incoming DS1 bit stream has been lost. The Red Alarm Inquiry test checks the
framing status of a DS1 Interface circuit pack. DS1 Interface circuit pack takes 3
seconds to recognize and report a Red alarm and 10 seconds to recognize and
report the resolution of a Red alarm.
When the DS1 Interface circuit pack detects a Red alarm, the circuit pack will
transmit a Yellow alarm to the remote DS1 endpoint and send a RED ALARM
message to the maintenance software. After the Red alarm is confirmed, the
maintenance software places all trunks of the circuit pack into the out-of-service
state. The inquiry test will be run every 10 minutes until the Red alarm is cleared.
When the Red alarm is cleared, the DS1 Interface circuit pack will stop
transmitting the Yellow alarm to the remote DS1 endpoint. The maintenance
software restores all trunks of the DS1 Interface circuit pack to the service state
before the Red alarm occurs.
Loss of Multiframe Alarm: If the DS1 Interface circuit pack is administered using
DMI-BOS signaling, the DS1 Interface circuit pack raises a Loss of Multiframe
Alarm (LMA) when it cannot interpret the incoming signaling bits to synchronize to
the multiframe pattern received in the 24
th
channel. Once DS1 Interface circuit
pack detects an LMA, the circuit pack will transmit a Remote Multiframe Alarm
(RMA) to the remote DS1 endpoint. Maintenance software handles both Red
alarm and LMA alarm(s) using the same mechanism.
Содержание S8700 Series
Страница 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Страница 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Страница 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Страница 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Страница 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Страница 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...
Страница 1121: ...CARR POW Carrier Power Supply Issue 1 May 2002 8 399 555 233 143 Figure 8 19 Power Distribution Unit J58890CH 1 ...
Страница 1447: ...E DIG RES TN800 reserve slot Issue 1 May 2002 8 725 555 233 143 E DIG RES TN800 reserve slot See ASAI RES ...
Страница 1735: ...LGATE AJ Issue 1 May 2002 8 1013 555 233 143 LGATE AJ See BRI SET LGATE BD See BRI BD LGATE PT See BRI PT ...
Страница 1846: ...Maintenance Object Repair Procedures 555 233 143 8 1124 Issue 1 May 2002 Figure 8 62 TN787 MMI MULTIMEDIA INTERFACE CIRCUIT PACK ...