Panasonic KX-TD500 Installation Manual page 39

1.6 Specifications
6.
Interface for diagnostic transfer by each port
The interface for diagnostic transfer is similar to the SLC card.
DHLC Card (Digital Hybrid Line Circuit card ) (KX-TD50170) Operation
1.
The LED indicator on the DHLC card lights when the system resets or DHLC local reset
occurs.
DLC Card (Digital Proprietary Line Circuit card)(KX-TD50172) Functions
1.
Digital PT and DSS console interface (16 circuits/card)
Maximum loop resistance : 40 ohms
Power supply : +15V (supplied through the data line)
2.
Digital PT (KX-T7235, KX-T7436) interface with OHCA feature
When a Digital PT with OHCA feature is connected to a port, a DPT OHCA card (KX-
TD50105) should be mounted on the TSW card.
DLC Card (Digital Proprietary ITS Line Circuit card)(KX-TD50172) Operation
1.
The LED indicator on the DLC card lights when the system resets or DLC local reset
occurs.
ESLC Card (Enlarged Single Line Telephone Circuit with Message Waiting card (16
extensions/card)) (KX-TD50175) Functions
1.
Standard SLT interface
Maximum loop resistance: 600 ohms (including SLT)
Power supply: +30V (with current limitation circuit)
4 DTMF receivers, and dial pulse detectors.
2.
Interface for power failure transfer by ports 1 to 8
The interface for power failure transfer is similar to the SLC card.
3.
Interface for diagnostic transfer (DT) by each port
The interface for diagnostic transfer is similar to the SLC card.
ESLC Card (Enlarged Single Line Telephone Circuit with Message Waiting card (16
extensions/card)) (KX-TD50175) Operation
1.
The LED indicator on the ESLC card lights when the system resets or ESLC local reset
occurs.
LCOT Card (Loop Start Central Office Trunk card (8 CO Lines/ card)) (KX-
T96180) Functions
1.
Loop start CO interface.
CPC detection, 1 DTMF generator.
With loop start, you seize a line by bridging through a resistance the tip and ring (both
wires) of your telephone line.
40
System Outline