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24.3. BLOCK DIAGRAM
KX-TA82470 BLOCK DIAGRAM
Exp308
(2AP)
/Exp208
(3AP)
Card
EXP
CONNECTOR
CO7-8
DTMFR (1,2)
(For EXT)
Q1-4,TOE1,2,STD1,2
Host i/f
PIO
ASIC
CROSS
POINT
(I/O)HOOK17-24,BELL17-24
EXT17-24
EXT17
EXT18
EXT19
EXT20
EXT21
EXT22
EXT23
EXT24
CN701, CN702
IC700
IC701, IC702, IC703
IC704, IC705
(APT I/F) PRX3, PTX3, PTXE1-3
24.4. EXPLANATION OF BLOCK DIAGRAM
24.4.1. Option Card (KX-TA82470)
24.4.1.1. Cross Point Circuit
This is a space division switching system for connecting the following:
The eight extension circuits with the eight CO,DTMF generator, DTMF receiver, INT-CALL ID,MODEM,OGM, VB, paging, music on
hold, tone etc.
It is composed of 3 C-MOS IC´s. (8 x 16 matrix: 1pce 4 x 8 matrix:1pce, 8 x 8 matrix:1pce)
The eight extension circuits with the eight CO,DTMF generator, DTMF receiver, INT-CALL ID,MODEM,OGM, VB, paging, music on
hold, tone etc.
It is composed of 3 C-MOS IC´s. (8 x 16 matrix: 1pce 4 x 8 matrix:1pce, 8 x 8 matrix:1pce)
24.4.1.2. Intercom Circuit
This is the interface circuit of the single line telephone, and it is composed of 8 intercom circuit. (ICM17-24)
24.4.1.3. DTMF Receiver Circuit
The circuit which receives the Dial Tone Multi Frequency by which extension dispatch is carried out with the DTMF receiver
connected to the crossing point.
connected to the crossing point.
24.4.1.4. INT CALLID Circuit
FSK/Dial Tone Multi Frequency generated by DSP in ASIC are connected even to a crossing point through AMP.
The circuit which sends out a CALLID signal to the telephone connected to an extension by connecting the line of INT-CALL-ID with
arbitrary extensions.
The circuit which sends out a CALLID signal to the telephone connected to an extension by connecting the line of INT-CALL-ID with
arbitrary extensions.
24.4.2. DATA COMMUNICATION CIRCUIT
This circuit is composed of the ASIC and the data communication interface circuits for the ICM circuit.
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KX-TA824
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