Panasonic KX-T336 System Reference Manual page 39

7.00 LCOT Card
Functions
LCOT (KX-T96180)-----Loop Start Central Office
Trunk card (8 CO Lines/
card)
(1)Loop start CO interface.
CPC detection, 1 DTMF driver.
With loop start, you seize a line by bridging
through a resistance 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 each
other with connection cord 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.
Operation
LED indicator on the LCOT card lights when the
system reset or LCOT local reset occurs.
8.00 RCOT Card
Functions
RCOT (KX-T96183) ----Loop Start Central Office
(1)Loop start CO interface.
CPC detection, 1 DTMF driver.
With loop start, you seize a line by bridging
through a resistance 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 RCOT PFT
modular. When power failure occurs, CO
Tip/Ring leads are directly connected to SLT
Tip/Ring leads, but RCOT PFT modular and
SLT PFT modular should be connected each
other with connection cord 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 RCOT of a system is activated.
Operation
LED indicator on the RCOT card lights when the
system reset or RCOT local reset occurs.
1-E-5
(70695)
Trunk with Polarity
Reversal Detection card
(8 CO Lines/card)