KX-NS5282X, KX-NS5284X - Panasonic PBX Service Manual (repair manual). Page 6

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Item

Specification

BRI Line Interface

Number of Ports

2Ports(4BLine:2B x 2) / 4Ports(8BLine:2 x 4)

Layer 1 Specification

ITU-T I.430

Transmission Mode

4Line(TX+/TX-/RX+/RX-)
  *Send/Receive Wiring is Changeable With Mechanical Switch.

Line Code

AMI

Transfer Rate

192Kbit/s

Transmission Capacity

144kbps=2B+D(B=64kbps, D=16kbps)

Interface Reference Point

T Point(Line Mode)  S Point(Extention Mode)

Power Supply

Line Mode:Power Is Not Supplied.
Extension Mode:Do Not Supply.

Network Connection Topology Point to Point

  or Point to Multipoint
  *Termination Resistor is builted-in this Card.
  *System is used in Point to Multipoint at Line Mode, This Card Must Install in
    most far-end from DSU.

Termination Resistor

100

(Fixed)

BRI Line Interface IC

Lantiq(formerly, Infineon) PSB21150 x 4pcs.
Main Function
 Framer
 Line Driver/Receiver
 HDLC Controller(D channel)
 Clock Generation/Monitor
 Elastic Buffer(B Channel)

Line Interface Circuit

Main Frontend Circuit

(Except Interface IC)

 Pulse Transformer
 Surge Absorber

Interface Connector

RJ45 x 2/4

Line Status LED

Green LED:2/4(1 per port)