Panasonic KX-TA1232 Service Manual page 27

(7) SMDR BOARD
SMDR BOARD leads signal of RS-232C out with DIN 25 pin connector.
7.2. RESOURCE OF OPTION
(1) EXPANSION CO UNIT (KX-TA123280)
EXPANSION CO UNIT is an optical unit for extending the CO lines from 8 up to 12 lines. the
differences between this unit and the basic one are follows;
- The number of lines are 4. (8 for basic one)
- 1 line for the transfer function when the power fails
(2) EXPANSION EXT UNIT 8KX-TA123270)
EXPANSION EXT UNIT is an optical unit for extending the EXT lines from 16 up to 24 or 32
lines.The differences between this unit and the basic one are as follow;
- No diagnostic function for the CO board
(3) DOOR-PHONE UNIT (KX-TA123260)
DOOR-PHONE UNIT is an optical unit for connecting the door-phone and the door-opener with
the system. The system can be installed with one card, and one of this unit can cover 4 units of
the door-phone and 4 units of the door-opener.
Function
Current supply
2-4 w. convert
A/D, D/A convert
Detect connection of
Door phone
Door-opener control
(4) DISA CARD (KX-TA123291)
DISA CARD is an optical card that automatically. responds to the incoming signals on the CO
lines without through operator, and by receiving the secondary dial (DTMF signals) that calls the
specific extension and between the CO lines. The number of channels is 2.
Supplying the current to the door-phone.
Converting 2 w. signals from the door phone into 4 w.
Converting between the 4 w. analog signals and the PCM digital signals
CODEC
Detect if this board is connected with the door-phone.
4 channels of the relay contact out-put for the door-opener control.
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Description