NEC SV8500 Operation And Maintenance Manual - page 82
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CHAPTER 1
General
Figure 1-15 Speech Path Block Diagram (1-IMG)
MUX
MUX
MUX
TSW
TSW
TSW
TSW
MUX
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
PIR 3
PIR 2
PIR 1
PIR 0
[Symbols]
: Speech Path
: Circuit Card (ACT)
: Cable
: Circuit Card (STBY)
TSW : PH-SW10-A, etc.
MUX : PH-PC36
MUX
MUX
MUX
MUX