Panasonic KX-TD500 Installation Manual page 38

1.6 Specifications
1.
Standard SLT interface.
Maximum loop resistance : 600 ohms. (including SLT)
Power supply : +30 V (with current limitation circuit.)
2 DTMF receivers, dial pulse detector.
2.
Power Failure Transfer (PFT) by each port.
When a power failure occurs, SLT Tip / Ring are led by a PFT relay, but SLT PFT modular
and ELCOT/LCOT / GCOT modular should be connected to each other in advance.
3.
Diagnostic transfer (DT) by each port.
Diagnostic relay is placed in Tip / Ring of each port. During diagnostic test, only one
diagnostic relay in the SLT of a system is activated.
SLC Card (KX-T96174) Operation
The LED indicator on the SLC card lights when system reset or SLC local resets occurs.
SLC-M Card (KX-T96175) Functions
Single Line Telephone Circuit card
1.
Same as SLC card.
2.
Same as SLC card.
3.
Same as SLC card.
4.
SLT with Message Waiting Lamp interface
Power supply to Message Waiting
Lamp: +80 VDC (when 1mA)
SLC-M Card (KX-T96175) Operation
Same as SLC card
OPX Card (KX-T96185) Functions
Off Premise Extension (4 OPX Lines / card)
OPX Power Unit is necessary.
OPX Power Unit should be connected with OPX card, and Single Line Telephones for OPX
should be connected with OPX card.
DHLC Card (KX-TD50170)
1.
Standard SLT interface.
Power supply : +30V(with current limitation circuit).
2 DTMF receivers, dial pulse detector.
2.
Interface for APT/DPT and DSS console.
The interface for the APT/DPT and DSS console is similar to the DLC card.
For a DPT/APT, DSS console and SLT. (8 extensions or 16 extensions with XDP/card. Please refer to Section "2.4.13 Extra
*1
Device Port (XDP) Connection" for XDP.)
38
Functions
*1
System Outline