DOWNLOAD Panasonic KX-NS500UC (serv.man2) Service Manual ↓ Size: 12.71 MB | Pages: 127 in PDF or view online for FREE

6

*1 Except the 19-inch rack mounting equipment

Main CPU

Cortex A8 600 MHz

Power Input

100 V AC to 130 V AC: 2.2 A/200 V AC to 240 V AC: 1.3 A;50 Hz/60 Hz

Power Consumption (when fully mounted)

110 W

External Backup Battery

External battery port is not supported.

Memory Backup Duration

7 years

Dialling  

Trunk

Dial Pulse (DP) 10 pps, 20 pps
Tone (DTMF) Dialling with Caller ID (FSK/DTMF)
1600 

  Maximum

Extension 

Dial Pulse (DP) 10 pps, 20 pps
Tone (DTMF) Dialling with Caller ID (FSK)
SLC1 and 2 port support PFT in combination with the LCOT1 and LCOT2 port connected to 
an analogue trunk respectively.

Mode Conversion 

DP-DTMF, DTMF-DP

Ring Frequency 

20 Hz/25 Hz (selectable)

Operating
Environment

Temperature

 0 

C to 40 C

Humidity

10%to 90% (non-condensing)

Conference Call Trunk 

From 10 x 3-party conference call to 4 x 8-party conference call

Music on Hold (MOH)

Maximum 8 ports (Level Control: 31.5 dB to +31.5 dB per 0.5 dB)
MOH: Selectable Internal/External Music Source port

External Paging

Maximum 6 Ports (Volume Control: -15.5 dB to per 0.5 dB)

LAN Port

1 (for LAN connection)

10BASE-T/100BASE-TX (Auto MDI/MDI-X)

Extension Connection Cable

SLT

1-pair wire (T, R)

DPT

1-pair wire (D1, D2) or
2-pair wire (T, R, D1, D2)

PT-interface CS

1-pair wire (D1, D2)

PT-interface CS (High-density) 

4-pair wire (D1, D2)

DSS Console and Add-on Key Module

1-pair wire (D1, D2)

Air-cooling method

FAN

Dimension

430 mm (W) x 88 mm (H) x 367 mm (D)

Weight (when fully mounted)

Under 4.5 kg 

*1

 

Terminal Equipment Loop Limit

• SLT: 600 

 including set

• Doorphone: 20 



Minimum Leakage Resistance

15 000 

 maximum

Maximum Number of Extension
Instruments per Line

1 for SLT

Ring Voltage

65 Vrms at 20 Hz/25 Hz depending on the Ringing Load

Trunk Loop Limit

1600 

 maximum

Hookswitch Flash/Recall Timing Range

24 ms to 2032 ms

Door Opener Current Limit

24 V DC/30 V AC, 1 A maximum

External Sensor Current Limit

Power  to  the  external  sensor is provided from the DPH2 card and must be grounded
through the DPH2 card. For the connection diagram. 
The PBX detects input from the sensor when the signal is under 100 

.

Paging Terminal Impedance

600 



MOH (Music on Hold) Terminal Impedance

10 000 



7

The NS500 series PBX is constructed in Main Unit (NS500) and up to three expansion unit (NS520).
In Main Unit (NS500), CPU Board (MPR) (Master Processor)  which controlls whole call of this system is equipped, and, in an
expansion unit, CPU Board (SPR) (Slave Processor) controlling various line interfaces in the unit is equipped with.
Each expansion units are connected to Main Unit with star topology, and time slot exchange function is equipped in Main Unit.
The exclusive interface between basic and expansion units are built with one pair of TDM interface of 8.192MHz, and voice chan-
nel, control channel and addition information channel are secured.
All interface cards except digital extension intefarce (DHLC/DLC) are controlled by CPU Board (MPR)/CPU Board (SPR) directly.

Card

Description

CPU Board (MPR) 

Master CPU of NS500 system which controls Main Unit and up to three expansion unit. 

Main Unit Mother Board
(LCOT6+MCSLC16+DLC2)

Ext and Trunk combo card which support analog trunk (6ch), analog extension line (16ch) and digital exclusive
line (2ch).

Card

Description

CPU Board (SPR)

CPU Board (SPR) is a sub CPU card controlling the line card in the expansion unit.

Expansion Unit Mother Board
(MCSLC16)

Extension line card.

MPR

CortexA8

600MHΈ

Master

FPGA

DPT

I/F

2port

PLD1

Extension

ίEXT_PLDὸ

MCSLC16

S-lab

SLIC/CODEC

x8

LCOT6

DSPG

DE56x3

DSP

RMT

NAND

1GB

SRAM

512KB

EXP-M

DDR3

512MB

Extension

Trunk/DPH

TD

M

B

u

s

CP

U

B

u

s

IIO

SPI

LED(2)/SW(1)/USB Host(1)

Mother Board

CPU

SD Card

PLD2

Trunk

ίCO_PLDὸ

Fig.1 Block Diagram

Main Unit

8

Card

Description

SD(L/M/S)

SD card is used for strage memory of UM. SD card is implemented on CPU Board (MPR) .
The capacity of SD card are:
SD(M):16GB§SD(L):8GB§SD(XS):2GB 
In the case of NS500, it is necessary to implement it when using a VoIP functions.

RMT

Modem card which is userd for remote maintenance purpose.
This card is implemented on MRP card.

DSP(L/M/S)

DSP option cards (KX-NS0112/NS0111/NS0110) are used to realize VoIP function, UM function, a voice confer-
ence function.
NS500 can implement only DSP-S.

EXP-M

EXP-M is the expansion interface card which connects up to three expansion units to a Main Unit. 
In each unit interval, below signals are connected:
   1) 8.192MHz clock to supply from a Main Unit to an expansion unit by reference clock
   2) Frame header signal of 8KHz
   3) TDM bus of 8.192MHz from/to basic and expansion unit.
The TDM bus takes advantage of 128 time slots for a voice, control, addition information channel.
Exchange of the non-blocking is possible by a time switch in the Main Unit.

9

The Main Unit is constructed by CPU Board (MPR)  and Mother Board. The block diagram and operation of each card are
described here.

Fig.2 shows detail block diagram of CPU Board (MPR) , and each function of CPU Board (MPR) is described in Table.4.

Device/Function Block

Description

CPU

CPU controls exchange and monitoring functions of the whole NS500 system.

DDR3

DDR3 is main memory of CPU Board (MPR). Operating system, application program and concerning data are
stored in this memory.

NAND Flash

Program and system data are stored in this memory.

SRAM

SRAM is backed up by battery, and system information is stored this non-volatilized memory.

FPGA

FPGA provides basic PBX function such as time switch, tone generation and so on.

USB

USB master port for maintenance.

L2SW/LAN(RJ45)

LAN port is used for VoIP and Web-MC connection.

SD Card

UM voice data are stored in this SD card.

RTC

RTC is battery backed up clock which maintains system clock of NS500 system.

ARM

Cortex- A8

600MHz

L1 32K/32K w/SED

L2 256K w/ECC

176K ROM 64K RAM

64K RAM

Crypto

DDR

Interface

DDR3

512MB

NAND

NAND

FLASH

1GB

UART

McASP

Ethernet

USB

SD

GPIO

Interrupt

etc.

DC/DC(+3.3V,+1.8V,+1.1V)

I2C

AC_ALM, DC_ALM,System Reset, FPGA_REBOOT, DONE

EXP-M

Connector

DSP

op

tio

n

Con

nec

tor

RMT

O

pti

on

Con

nec

tor

Master

FPGA

USB

TypeA

LAN

RJ45

RMII

USB- Host- I/F

SRAM

512KB

LED

RTC

+5V

External bus

ER,DR

SLID

E

S

W

SD-I/F

80PIN

C

O

N

N

E

C

T

O

R

(C

P

U

In

terf
ace)

TDM

L2SW

PHY

ST

A

T

US

PBX

MO

D

E

PHY

PHY

DC/DC

+3.3V

+15V

8bit

8bit

16bit

SD-Card

Connector

16bit

+5V

+VBAT

Exp

ansion

bu

s

UART- I/F

+5V

Fig.2 CPU Board (MPR) Block Diagram