Maintenance-Object Repair Procedures
555-233-143
8-950
Issue 1 May 2002
IPSV-CTL (Ipserver Interface Control)
The TN2312AP IPSI circuit packs are duplicated in a high- or critical-reliability
system. As part of duplicated IPSIs, PKTINTs, Archangels, and Tone-Clocks are
also duplicated. However, to simplify recovery algorithms, only one IPSI can be
“active” in a given PN. (The one exception to this rule is the IPSI’s tone-detection
module. Both IPSIs may have active tone detectors.) During an IPSI
interchange, their PKTINTs, Archangels, and Tone-Clocks can be distributed
between the two IPSIs. But during stable operation, the active PKT-INT,
Archangel, and Tone-Clock must all reside on the same IPSI.
Each IPSI’s state of health (SOH) with the following elements in descending order
of priority:
■
Tone-Clock
■
PKT-INT
■
Archangel
The active media server’s maintenance software is responsible for maintaining
the SOH of both IPSIs (active and standby) in each PN. If an active IPSI’s SOH is
lower than the standby’s, IPSI interchange is initiated. The following list contains
failures/actions that would result in the interchange:
■
Active IPSI has a faulty Tone-Clock.
1. IPSI’s hardware detects loss of clock, and its firmware initiates clock
interchange.
2. IPSI’s firmware notifies software of loss of clock.
3. Software interchanges PKT-INT.
4. Software interchanges Archangel.
■
Active IPSI has a faulty PKT-INT.
1. Software detects faulty PKT-INT.
2. Software interchanges PKT-INT.
3. Software interchanges Archangel.
4. Software interchanges Tone-Clock.
Table 8-369.
MO’s Name
(in Alarm
Log)
Alarm Level
Initial SAT Command to
Run
Full Name of MO
IPSV-CTL
NA
set ipserver-interface
Ipserver Interface Control
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...