Panasonic KX-TD500 Installation Manual page 28

1.4 Service Cards Description
T1 Digital Trunk Card (KX-T96187);
This card interfaces 1 T1 line and the TDM bus. It is available to connect a T1 line to the system
per T1 card. A T1 line has a capacity of 24 voice conversations.
E1 Digital Trunk Card (KX-T96188);
This card interfaces 1 E1 line and the TDM bus. It is available to connect an E1 line to the
system per E1 card. An E1 line has a capacity of 30 voice conversations.
LCOT with Pay-Tone Detection (PCOT) Card (KX-T96189);
This card is a version of the LCOT card with the capability to detect a pay-tone of CO line.
This is useful to charge management with a pay-tone which is sent from CO line.
Enhanced Loop Start Central Office Trunk (ELCOT) Card (KX-TD50180);
This card interfaces 8 central office loop start trunks and the TDM bus. It provides 8 CO lines
to the system per ELCOT card. With loop start, a line is seized by bridging through a resistance
the tip and ring (both wires) of the telephone line. This card supports Caller ID service or Pay
Tone service.
ISDN Basic Rate Access Interface (BRI) Card (KX-TD50288);
This card interfaces ISDN Basic Access line (2B+D). It is available to connect 8 BRI-ISDN
lines to the system per BRI-ISDN card. A BRI-ISDN line has capacity of 2 voice
conversations.
ISDN Primary Rate Access Interface (PRI30) Card (KX-TD50290);
This card interfaces ISDN Primary Access line. (1 circuit/card)
A PRI-ISDN line has capacity of 30 voice conversations.
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System Outline