Panasonic KX-TD500 Installation Manual page 31

1.6 Specifications
TSW Card
Functions
Operation
DHLC Card (KX-TD50170)
Functions
1-18 System Outline
(1) Time switch.
Capability of switching voice is 768ch x 768ch.
(2) Generation of call progress tones.
Call progress tones are dial tone, busy tone, reorder tone
and ringback tone.
(3) Conference circuit.
TSW card has 3 party x 8 conference's circuits.
(4) Paging interface.
TSW card has 2 pre-amp. circuits for paging. In order to
adjust volume, each amp circuit is equipped with a knob.
(5) Music-in interface.
TSW card has 2 interface circuits for music on hold or
BGM.
(1) A knob for adjusting volume of external paging is turned
with a screw driver from front of TSW card.
(2) The LED indicator on the TSW card lights when system
resets or TSW local reset occurs.
Digital Hybrid Line Circuit card is for a Digital/Analog PT,
DSS console and SLT. (8 extensions or 16 extensions with
XDP*/card)
* Refer to Section 2.4.8 "Extra Device Port (XDP)
Connection" for XDP.
(1) Standard SLT interface.
Maximum loop resistance : 600 ohms (including SLT)
Power supply : +30V (with current limitation circuit)
2 DTMF receivers, dial pulse detector.
(2) Interface for Analog/Digital PT and DSS console
The interface for the Analog/Digital PITS and DSS console
is similar to the DLC card.
(3) Interface for Digital PT (KX-T7235, KX-T7436) with
OHCA feature