NEC SV8500 Operation And Maintenance Manual - page 154
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CHAPTER 2
Operations of SV8500 Server
Note:
If the MBR or MB key is set to upward, the GT card is placed in make-busy status. Return the key to the
original position (downward).
STEP 3
Confirm the changed lamp indications.
•
See the figure below to check the lamp indications.
Figure 2-18 LED Indications Before and After Speech Path System Changeover
STEP 4
Make test calls to see that the TSW card is operating normally.
STEP 5
Analyze system messages.
•
When TSW ACT/STBY is changed, system Messages 7-E, 7-F, and 1-T will be issued.
Be sure to use “MBR” key on the ACT GT card. If “MB” key is operated before operating
“MBR” key on the ACT GT card, the card will be reset. During this initialization, all channels
that are related to this card will be placed in MB status, disconnecting all active calls.
WARNING
MB
OPE/MB
MB
TSW MBR
MB
MUX ACT
DLKC TSW
MUX
TSW ACT
MB
OPE/MB
MB
TSW MBR
MB
MUX ACT
DLKC TSW
MUX
TSW ACT
Meaning
ON
OFF
Before
After