status pnc
Issue 1 May 2002
7-371555-233-143
Most fields on this screen display blanks when the PNC is not duplicated.
Duplicated?
Whether or not the system has a duplicated PNC (critical-reliability option).
Software
Locked?
On a system with duplicated PNC, whether the PNCs are locked by means of the
set pnc lock or reset pnc override-and-lock commands. When this field
displays “yes”, spontaneous or demand PNC interchanges are not possible. To
enable interchanges, use the set pnc unlock command.
Standby
Busied?
On a system with duplicated PNC, whether or not the standby PNC is busied out
with the busy pnc command. Interchanges are prevented when the standby is
busied out.
Direct
Connect?
Whether the system uses direct-connect connectivity or a center stage switch.
Standby
Refreshed?
On a duplicated system, this field indicates whether the standby PNC has
completed a global refresh of duplicated call setup after being released from a
busyout, or after a system reset.
NOTE:
This field does not indicate if a partial unrefresh has taken place in
response to a problem on the standby. Only a “functional” state of health
on the standby (all zeros in the state-of-health vector) guarantees that the
standby’s call setup matches completely that of the active.
Interchange
Disabled?
This field displays “yes” when the anti-thrashing mechanism is in effect,
preventing PNC interchanges. This is the case for 5 minutes after a spontaneous
PNC interchange, and for 30 seconds after a demand interchange. The reset
pnc interchange override-and-lock command overrides antithrashing. This
field does not indicate whether a PNC interchange is currently prevented by a
software lock, by insufficient state of health of the standby, or by busyout of the
standby.
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