NEC SV8500, Operation And Maintenance Manual

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CHAPTER 2 Operations of SV8500 Server
<1-IMG>
CPU Card Changeover: The ACT/STBY of CPU card can be changed by the CMOD command or
operating the MBR key on the CPU card front panel.
Speech Path Changeover: The ACT/STBY of speech path system (TSW) can be changed over by the
CMOD command or operating the TSW MBR key on the active TSW cir-
cuit card. When the TSW is changed over, all MUX cards in the system are
also changed over.
PLO Changeover: PLO is included in the TSW. To change the ACT/STBY of PLO, operate
PLO MBR key on the PLO active TSW card.
Figure 2-6 Switching Network General Block Diagram (1-IMG)
Note 1:
When CPU changes over, EXB will also change over.
Note 2:
When TSW changes over, all the speech path including MUX cards also change over.
Note 3:
TSW has a MBR key (Make Busy Request). System changeover is available also by this key.
Note 4:
System changeover is available by the MBR key on the front of the CPU card in ACT state.
IMG 0
TSW 0
TSW: PH-SW10-A
MUX: PH-PC36
PCM H
W
PM BU
S
PCM H
W
PM BU
S
PCM H
W
PM BU
S
PCM H
W
PM BU
S
MUX MUX MUX MUX
Line/Trunk PM
EMA
EXB0 EXB1
CPU0
CPU1
(PLO 0)
TSW 1
(PLO 1)
[PIR]
[SV8500 Server]
Note 1:
Note 2:
Note 3:
Note 4: