Read Panasonic KX-NS500 / KX-NS520 / KX-NS500RU / KX-NS520RU (serv.man2) Service Manual Supplement online
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Table.3 Main Unit Option Card Description
Card
Description
SD(L/M/S)
SD card is used for strage memory of UM. SD card is implemented on CPU Board (MPR) .
The capacity of SD card are:
SD(M):16GB§SD(L):8GB§SD(XS):2GB
In the case of NS300, it is necessary to implement it when using a VoIP functions.
The capacity of SD card are:
SD(M):16GB§SD(L):8GB§SD(XS):2GB
In the case of NS300, it is necessary to implement it when using a VoIP functions.
RMT
Modem card which is userd for remote maintenance purpose.
This card is implemented on MRP card.
This card is implemented on MRP card.
DSP(L/M/S)
DSP option cards (KX-NS0112/NS0111/NS0110) are used to realize VoIP function, UM function, a voice confer-
ence function.
NS300 can implement only DSP-S.
ence function.
NS300 can implement only DSP-S.
EXP-M
EXP-M is the expansion interface card which connects up to three expansion units to a Main Unit.
In each unit interval, below signals are connected:
1) 8.192MHz clock to supply from a Main Unit to an expansion unit by reference clock
2) Frame header signal of 8KHz
3) TDM bus of 8.192MHz from/to basic and expansion unit.
The TDM bus takes advantage of 128 time slots for a voice, control, addition information channel.
Exchange of the non-blocking is possible by a time switch in the Main Unit.
In each unit interval, below signals are connected:
1) 8.192MHz clock to supply from a Main Unit to an expansion unit by reference clock
2) Frame header signal of 8KHz
3) TDM bus of 8.192MHz from/to basic and expansion unit.
The TDM bus takes advantage of 128 time slots for a voice, control, addition information channel.
Exchange of the non-blocking is possible by a time switch in the Main Unit.
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