Panasonic KX-TD500, Руководство по установке

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System Outline
Installation Manual 45
ESLC Card (KX-TD50175) Functions
Enlarged Single Line Telephone Circuit with Message Waiting card (16 extensions/card)
1.
Standard SLT interface.
Power supply: +30 V (with current limitation circuit)
4 DTMF receivers, and dial pulse detectors.
2.
Interface for power failure transfer by ports 1 to 8.
When a power failure occurs, SLT Tip/Ring are led by a PFT relay, but SLT PFT modular
and LCOT/GCOT/ELCOT modular should be connected to each other in advance.
ESLC Card (KX-TD50175) Operation
1.
The LED indicator on the ESLC card lights when the system reset or ESLC local reset
occurs.
LCOT Card (KX-T96180) Functions
Loop Start Central Office Trunk card (8 CO Lines/card)
1.
Loop start CO interface.
CPC detection, 1 DTMF generator.
With loop start, you seize a line by bridging through a resistance between the tip and ring
(both wires) of your telephone line.
2.
Power Failure Transfer (PFT) by each port
Tip/Ring of CO are connected to a CO interface circuit, and directly to LCOT PFT modular.
When power failure occurs, CO Tip/Ring leads are directly connected to SLT Tip/Ring
leads, but LCOT PFT modular and SLT PFT modular should be connected to each other in
advance.
3.
Diagnostic Transfer (DT) by each port.
A diagnostic relay is placed in Tip/Ring of each port.
During diagnostic test, only one diagnostic relay in an LCOT of a system is activated.
LCOT Card (KX-T96180) Operation
The LED indicator on the LCOT card lights when the system reset or LCOT local reset occurs.