Panasonic KX-TD500 Installation Manual page 42

1.6 Specifications
Frame Format :
Line Coding
Channel Type :
Signalling
(DTMF : 24 receivers and 6 generators)
T1 Digital Trunk Card (KX-T96187) Operation
The LED indicator on T1 card lights when the system resets, or T1 card local reset or T1 line
fault occurs.
E1 Digital Trunk Card (KX-T96188) Functions
1.
E1 interface (1 circuit/card).
E1 is a digital transmission link with a capacity of 2.048Mbps.
E1 can carry 30 voice conversations
Frame Format : PCM30/PCM30-CRC
Line Coding : AMI/HDB3
Channel Type : DR2/E&M-C/E&M-P
Signalling : Pulse / DTMF / MFC-R2
E1 Digital Trunk Card (KX-T96188) Operation
1.
The LED indicator on E1 card lights when the system resets, or E1 card local reset or E1
line fault occurs.
PCOT (Loop Start Central Office Trunk with Pay Tone Detection) Card (4 CO
Lines/card)(KX-T96189) Functions
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.
Pay tone detection (12kHz/16kHz)
2.
Power failure transfer (PFT) by each port.
Tip/Ring of CO are connected to a CO interface circuit, and directly to PCOT PFT modular.
When power failure occurs, CO Tip/ring leads are directly connected to SLT Tip/Ring leads,
but PCOT 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 PCOT of a system is activated.
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D4 / ESF
: AMI / B8ZS
LCO / GCO / DID / OPX / TIE
: Pulse / DTMF
System Outline