NEC SV8500 Operation And Maintenance Manual - page 150
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CHAPTER 2
Operations of SV8500 Server
STEP 4
Return TSW MBR key downward on the TSW that was placed in ACT.
Note:
If the MBR key remains in the UP position, the TSW card stays in make-busy state. Be sure to return the
key to the DOWN position, except in special circumstances.
Note:
PLO can be switched over by PLO MBR key. For this reason, TSW changeover does not affect that of
PLO.
STEP 5
Make test calls to see that the TSW card is operating normally.
STEP 6
Analyze system messages.
•
When TSW ACT/STBY is changed, system Messages 7-E, 7-F, and 1-T will be issued.
slot13
slot14
slot13
slot14
slot13
slot14
MB
TSW MBR
PLO MBR
PLO ACT
MUX ACT
TSW ACT
MB
TSW MBR
PLO MBR
PLO ACT
MUX ACT
TSW ACT
TSW MBR to Upward
Return the key.
㪖
MB
TSW MBR
PLO MBR
PLO ACT
MUX ACT
TSW ACT
MB
TSW MBR
PLO MBR
PLO ACT
MUX ACT
TSW ACT
MB
TSW MBR
PLO MBR
PLO ACT
MUX ACT
TSW ACT
MB
TSW MBR
PLO MBR
PLO ACT
MUX ACT
TSW ACT
TSW MBR to Downward
ACT
STBY
STBY
ACT
Make sure that
TSW ACT lights green
on the mate TSW.
Be sure to use “TSW MBR” key on the TSW-ACT TSW card. If “TSW MB” key is operated
before operating “TSW MBR” key on the TSW-ACT TSW card, the card will be reset. During
this initialization, all channels on the card will be placed in MB status, disconnecting all active
WARNING