Panasonic KX-TD500 Installation Manual page 42

1.6 Specifications
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.
RCOT Card (KX-T96183) Operation
The LED indicator on the RCOT card lights when the system reset or RCOT local reset occurs.
E&M Card (KX-T96184) Functions
1.
E&M (Tie) Line Types.
Type 5 only.
2.
Transmission.
2-wire or 4-wire voice path (Programmable)
(Note) Maximum cabling distance of E&M line cord (twisted cable):22 AWG : Under 9.6
km (6 miles)
3.
Transmission levels.
2-wire voice path ...... -3 dB (transmit / receive)
4-wire voice path ...... -3dB normal (transmit / receive)
Programmable (-6 dB, -3 dB, 0 dB, +3 dB)
4.
Signalling.
DTMF or Pulse
5.
E lead.
Battery: -48 VDC, -20 mA to ground (max.)
Sensitivity: 5 mA or 2000
6.
M lead.
Permitted current : 30 mA (max.)
Permitted voltage: 100 V (max.)
E&M Card (KX-T96184) Operation
1.
The LED indicator on the E&M card lights when the system reset or E&M card reset
occurs.
T1 Digital Trunk Card (KX-T96187) Functions
T1 interface. (1 circuit / card)
T1 is a digital transmission link with a capacity of 1.544 Mbps.
T1 can carry 24 voice conversations.
Frame Format :
42
to ground (max.) (min.)
D4 / ESF
System Outline