1 교환기 변천사. 2 목 차 1. 교환기 개요 2. 기술적인 추세 3. 교환기 변천사...

1

교환기 변천사

2

목 차

1. 교환기 개요

2. 기술적인 추세

3. 교환기 변천사

4. 시스템 기능

5. 기능 설명

3

1. 교환기 개요

1.1. 개념

C.O

Building

사설교환기

- Network Side : 효율적인 Network 관리- User Side : 경제적 (Installation, Operation) 다양한 서비스 유지보수의 용이

** PSTN : Public Service Telephone Network** C.O : Central Office

Concentration

PSTN

4

1. 교환기 개요

1.2. 시스템 Block Diagram

SubscriberLine

Interface

SubscriberLine

Interface

TrunkLine

Interface

TrunkLine

Interface

Control Part

Control Part

I/OInterface

I/OInterface

SignalingPart

SignalingPart

SwitchSwitch

Administrator

PSTN

5


2.1. 서비스 추세

Integrated

Visualized

Personalized

Intelligent

VoiceConnection

6


2.2. 기능 추세

Broadband Switching

IP T

elep

hony

Narrow band Switching

CTI

Ser

vice

CDMA 2G/3G

DECT

CT-2

Optic Switching

Switching

Wireless

교환기

Solution/Internet

WLAN

Inte

rnet

Ser

vice

현 상황

MIP

Tel

eph

ony

MIP : Mobile IP

** CTI : Computer Telephony Integration** CT-2 : Cordless Telephony generation 2** DECT : Digital European Cordless Telecomm.** CDMA : Code Division Multiple Access

7

Analog

Digital

WDMExchange

** ISDN : Integrated Service Digital Network** ATM : Asynchronous Transfer Mode ** WDM : Wavelength Division Multiplex

ElectronicExchange

ISDNExchang

e

ATMExchang

e

ManualExchange

Automatic

Exchange

Voice IntegratedData

1950 1960 1970 1980 1990 2000

용량

Optic

연도

DigitalExchange


2.3. 시스템 추세

IPExchang

e

8


3.1. 기본 구성

C.O

교환기

PSTN일반전화기

시스템 운영자프린터

전용선

타 PABX

9


3.2. 기능추가 - Digital 기기

C.OPSTN

일반전화기

AdministratorPrinter

전용선

Other PABX

Digital Trunk (T1,E1)Digital 폰

2B+D교환기

10


3.3. 기능추가 - ISDN

C.OPSTN

일반전화기


전용선

Other PABX

Digital Trunk (T1,E1)Digital Phone

ISDN Trunk (PRI,BRI)ISDN Phone

ISDN PC

2B+D

2B+D교환기

11


3.4. 기능추가 - CTI

C.OPSTN 일반전화기

전용선

Other PABX

Digital Trunk (T1,E1)

ISDN Trunk (PRI,BRI)

Agents /Tele-marketer


DB Manager

CTI Server

CTI Server

LAN

Digital Phone

ISDN Phone

ISDN PC

2B+D

2B+D

PBX

Driver

PBX

Driver

교환기

12

PBX

Driver

PBX

Driver


3.5. 기능추가 - Wireless

C.OPSTN 일반전화기

전용선

Other PABX


ISDN Trunk (PRI,BRI)Digital Phone

ISDN Phone

ISDN PC

2B+D

2B+D

Hand HeldPhone

Base Station



DB Manager

CTI Server

CTI Server

LAN

교환기

13

교환기


3.6. 기능추가 - Internet

C.OPSTN

일반전화기

전용선

Other PABX



CordlessPhone

Base Station


CTI Server

CTI Server

LAN Switch


Internet

Multimedia PC

IP 전화기

VOIP

CallManager

CallManager

** VOIP : Voice Over Internet Protocol

DB Manager

Digital Phone

ISDN Phone

ISDN PC

2B+D

2B+D

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ATM network

C.O / Leased LinePSTN

일반전화기



CordlessPhone

Base Station


CTI Server

CTI Server


Internet

Multimedia PC

IP 전화기

VOIP

CallManager

CallManager

DB Manager

3.7. 기능추가 - ATM Backbone

Cell SwitchSTM1 (155M)

Digital Phone

ISDN Phone

ISDN PC

2B+D

2B+D

** STM1 : Synchronous Transfer Mode type 1

LAN Switch

교환기

15

4.1. 시스템 기능 On-line Diagnostics (Fault Detect / Recovery) 과금 / 통계 원격 유지보수 (Remote Polling/ Remote Alarm)

4.2. Networking 기능 Analog / Digital / ISDN / SS7 / Wireless / Internet

4.3. 부가기능 Voice Mail System Computer and Telephony Integration Internet Telephony Gateway (VoIP) Wireless CDMA

4. System 기능

** SS7 : Signaling System No.7

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5. 기능 설명

5.1. ISDN (Integrated Service Digital Network)

5.2. Wireless CDMA

5.3. Internet Telephony

5.4. CTI (Computer Telephony Integration)

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PSTN / ISDN

NT1

5.1. ISDN

PRI30B+D

BRI2B+D

ISDN Phone

ISDN PC

ISDN G4 Fax

ISDN Picture Phone

** PRI : Primary Rate Interface (30B+D) ** BRI : Basic Rate Interface (2B+D) ** B : Bearer channel (64Kbps)** D : Data channel (64 or 16Kbps)** NT1 : Network Termination Type 1

BRI2B+D

BRI2B+DISDN Phone

교환기

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InfoMobile : 삼성 Inforex Mobile 시스템PLMN : Public Location Mobile NetworkHLR/VLR : Home/Visitor Location RegisterationMSC : Mobile Subscriber ControllerBSC : Base Station ControllerBTS : Base Station Transceiver System

5.2. Wireless CDMA

PLMN

IS-634

Hand Off

InfoMobileOffice Zone

BSCBSCMSCMSC

HLR/VLRHLR/VLR

PSTN/ISDN

BTSBTS

BTSBTS

Public Zone

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5.3. Internet Telephony

Gatekeeper

Multimedia PC

Web Video Phone

Telephone

교환기 교환기

IP Network (Internet)

PSTN

Telephone

TelephoneTelephone

Internet Phone

VOIPVOIP

>>> Email 수신송신자 : [email protected]송신일 : 1996년7월22일제 목 : Web Phone사업계획 보고내 용 : 사업부장께 Web Phone사업 추진보고 일정이 다음과 같이↓계속

1 2 3

4 5 6

7 8 9

* 0 #

FALSH SPK

↑ ↓

인터넷폰

RDAILMUT E

M 1

M 2

M 3

이름

기 능

20

5.4. Computer and Telephony Integration

VMS

FMS

VMS

FMS

Clients type A

PBX Driver

CTI Server

PBX Driver

CTI Server

WEB

Server

WEB

Server

ARSARS

L A N

InternetPSTN

Gateway

Server

Gateway

Server

** ACD : Automatic Call Distribution ** VMS : Voice Mail System** ARS : Automatic Response System ** FMS : Fax Mail System

DB Manager

Clients type B

ACDACD

교환기

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감사합니다

1 교환기 변천사. 2 목 차 1. 교환기 개요 2. 기술적인 추세 3. 교환기 변천사...

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