CHAPTER
1
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2
3
4
5
6
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1
BASIC OF TELEPHONE
1. INTRODUCTION TO THE TELEPHONE ................................. 1-2
1.1
Parts of the Telephone .................................................... 1-2
1.2
Making a Call .................................................................. 1-3
1.3
How do you make a call? ................................................ 1-4
1.4
Voice Frequencies Carried by the Telephone.................. 1-4
2. STRUCTURE OF A TELEPHONE ........................................... 1-5
2.1
Transmitter (Microphone) ................................................ 1-6
2.2
Receiver (Speaker) ......................................................... 1-7
2.3
Voice Circuit .................................................................... 1-7
2.4
Hook Button .................................................................... 1-8
2.5
Dial .................................................................................. 1-9
2.6
Bell (Speaker)................................................................ 1-10
3. TYPES OF TELEPHONES .................................................... 1-11
3.1
Dial Telephones............................................................. 1-11
3.2
Pushbutton Telephones................................................. 1-11
3.3
Digital Telephones ......................................................... 1-12
4. CIRCUIT DIAGRAM IN THE TELEPHONE ........................... 1-13
4.1
Dial Telephones............................................................. 1-13
4.2
Pushbutton Telephone................................................... 1-14
5. INTRODUCTION TO THE TELEPHONE NETWORK............ 1-15
5.1
Parts of a Telephone Network ....................................... 1-15
5.2
Basic Structure of a Telephone Network System .......... 1-19
5.3
Nationwide Telephone Network (In case of Japan) ....... 1-20
6. TELEPHONE EXCHANGES .................................................. 1-25
6.1
Types of Exchanges ...................................................... 1-25
6.2
The Exchange ............................................................... 1-26
Содержание FACSIMILE BASIC 2000
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