NEC UNIVERGE SV8500 - Page 139

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CHAPTER 2 Operations of SV8500 Server
<4-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 MBR key on the active GT circuit card.
When the speech path is changed over, all TSW, DLKC, MUX cards are
also changed over.
PLO Changeover: To change the ACT/STBY of PLO, operate MB key on active PLO card.
Figure 2-7 Switching Network General Block Diagram (4-IMG)
Note 1:
When CPU changes over, EXB will also change over.
Note 2: When GT changes over, all the speech path including DLKC/TSW/MUX cards will change over.
Note 3: The system changeover is available by the MBR key on the front of the CPU card in ACT state.
EMA
EXB0
EXB1
CPU0
CPU1
IMG 0
TSW I/O BUS
TSW I/O BUS
TSW 00
GT 0
GT 1
TSW 10
TSW 01
TSW 11
TSW 02
TSW 12
TSW 03
TSW 13
DLKC 1
DLKC 0
PLO 1
PLO 0
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
IMG 1
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
IMG 2
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
IMG 3
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
[PIR]
[SV8500 Server]
[TSWR]
Note 1:
Note 3:
Note 2: