KX-NS0290CE - Panasonic PBX Service Manual (repair manual). Page 6

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PRI BLOCK

SLT BLOCK

PRI I/F

NUMBER OF PORT

PRI30 : 30 PORTS

Transfer rate

PRI30 : 2.048Mbit/s

Line code

PRI30 : HDB3

Framing

PRI30 : CRC-Multiframe or SMF(Sub Multiframe)

PRI FRAMER IC

Lantiq PEF2256H VER.2.2

DPLL

Build-in IC

Line i/f circuit

Main frontend parts
 Pulse trans
 Surge protector
 EMC filter
 Termination : 120

Ω

 RJ45 connecter

Line SYNC

Line SYNC clock Freq. : 2.048MHz

LED 

Status information LED : 5

SERR (RED)  OFF NORMAL / ON ALARM
RAI (RED)  OFF NORMAL / ON ALARM
AIS(RED)   OFF NORMAL / ON ALARM
SYNC(GREEN) ON/FLASH Normal
* FLASH = External Clock Master
DLK(GREEN) ON NORMAL / OFF ALARM

Line I/F connector

CO

RJ45 (Selected by SW501)

Extention

Onboard DC/DC circuit

Input : +15V
Output :  +3.3V

Self diagnosing function

Loopback test by FRAMER IC
Local Loopback function by primary Relay

EXT Interface

Number of Ports

2 Ports

Line interface circuit

2chSLIC/2chCODEC
(PEF4365T/PEB3265F) function
-52V/26mA feeding function
Dial Pulse signal detection function
DTMF signal detection function
Bell signal issuing sending
Hook detecting function
Ring trip detecting function
2w/4w converting function
CODEC function
Test function (loopback, Tone generation)
Programmable digital filtering function
Serial interface function
Caller ID(FSK)generator function
Surge protective function

EXT line interface connector

RJ45* Connector x 1

LED display circuit

None

Onboard DC/DC circuit

Input  :  +15V
Output :  +80V / -55V / +3.3V