NEC Univerge SV8500 Operation And Maintenance Manual page 594

(a) ALM lamp (Red) indicates abnormal software behavior.
(b) SYS ALM lamp indicates MJ alarm when it is steady ON. Also it indicates MN alarm when it is flash-
ing in a certain interval.
(c) Check the alarm status before starting fault repair procedure. If any change is detected, record it.
(3) System Changeover (For Dual Configuration)
SV8500 server has TP block and SP block. The latter can be divided to "SP block for SIP Station" and "SP
block for other than SIP Station". When CPU card is changed over, TP block and "SP block for SIP Station"
are switched over in combination. This is indicated by shaded background in the figure below. On the other
hand, "SP block for other than SIP Station" operates in load sharing (N+1), which means both the "SP block
for other than SIP Station" are placed in ACT mode.
SV8500 Server
SV8500 Server #0
for SIP Station
other than SIP Station)
: ACT
(a) TP Changeover
• CMOD command from PCPro: Use this operation when available.
• Changeover by key operation: See
(b) SP Changeover
[1] TP block
SP block
(ACT)
ACT/STBY
TP #0
SP #0
(ACT)
(ACT)
SP #0
load sharing N+1
: STBY
"How to Change over CPU
CHAPTER 4
[2] SP block (for SIP Station)
[3] SP block (other than SIP Station)
SV8500 Server #1
(for SIP Station)
(other than SIP Station)
– 547 –
Fault Repair Procedures
(STBY)
TP #1
SP #1
(STBY)
(ACT)
SP #1
Card" for more details.