Panasonic KX-TD500 System Reference Manual page 84

3.03 OHCA Card (KX-T96136)
connector
(5-pin)
connector
(4-pin)
OHCA
@
"OHCA" is marked.
1) Connection to the HLC card (KX-T96170)
OHCA card
1. Insert the connector (plug) on the OHCA card into the connector (jack) on the PLC
card.
2. Install the HLC card into a free slot. See page 2-C-20.
Two extensions are available for the OHCA function with one OHCA card. Refer to
page 2-C-8.
The OHCA function is provided with the following PITS telephones only:
KX-T123235, KX-T123230D or KX-T7130.
connector
(9-pin)
HLC card
2-C-6
• This card is installed on the HLC card or PLC
card.
9-pin connector
(plug)
5-pin connector
(plug)
4-pin connector
(plug)
9-pin connector
(jack)
5-pin connector
(jack)
4-pin connector
(jack)