Telecom Technical Specifications




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Telecom Technical Specifications





PSTN01


November 17,2003

Revise July 20,2007








Technical Specificaitons for Terminal Equipment for Connection to Public Switched Telephone Network

NATIONAL COMMUNICATIONS COMMISSION


Technical Specificaitons for Terminal Equipment for Connection to Public Switched Telephone Network

CONTENTS

1.Scope 5

2.Definition、Symbols and Abbreviations 10

2.1 Definition 10

2.2 Symbols 11

2.3 Abbreviations 11

3.EMC Requirement 12

4.Safety Requirement 12

5.Telecommunication requirement 12

5.1 Public switch telephone network interface requirement 12

5.1.1 Basic requirements 12

5.1.2 Surge Protection 12

5.1.2.1 Telephone Line Surge Test: 14

5.1.2.1.1 Metallic Surge Test: 14

5.1.2.1. 2 Longitudinal Surge Test: 14

5.1.2.2 AC Power Line Surge Test: 15

5.1.3 Line Polarity: 16

5.1.4 Leakage current limitations 16

5.1.5 Insulation resistance 17

5.1.6 Characteristics of TE for ringing signals 18

5.1.6.2 Ringing Impedance 19

5.1.6.3 On-hook AC impedance 20

5.1.7 Off-hook DC resistance 21

5.1.8 Sending level limitations of signals 23

5.1.9 Transverse balance limitations 24

5.1.10 Return loss 26

5.1.11 Pulse dialing 27

5.1.12 Dual tone multiple frequency (DTMF) dialing 28

5.1.12.1 Frequency combination 28

5.1.12.2 Signaling level 29

5.1.12.3 Signaling level difference 30

5.1.12.4 Tone duration 31

5.1.12.5 Pause duration 32

5.1.13 Series equipment 32

5.1.13.1 DC voltage drop of series equipment 32

5.1.13.2 Insertion loss of series equipment 33

5.2 Handset function 34

5.2.1 Transmission objective reference equivalent 34

5.2.1.1 Sending objective reference equivalent (According to OREM-A specification) 34

5.2.1.2 Receiving objective reference equivalent (According to OREM-A specification) 35

5.2.2 Transmission characteristics frequency response 36

5.2.2.1 Sending frequency response (According to OREM-A specification) 36

5.2.2.2 Receiving frequency response (According to OREM-A specification) 37

5.2.3 Side-tone objective reference equivalent (According to OREM-A specification) 39

5.2.4 Distortion 40

5.2.4.1 Sending distortion (According to OREM-A specification) 40

5.2.4.2 Receiving distortion (According to OREM-A specification) 41

5.2.5 Receiver volume control 42

5.2.6 Continuous sound pressure level of receiver 43

5.3 Cordless Phone function in connecting to PSTN 44

5.3.1 Radio frequency requirement 44

5.3.2 Security code requirement 44

5.3.3 Transmitter requirement 45

5.3.3.1 Carrier frequency 45

5.3.3.2 Modulation sensitivity (Use for Base station only) 45

5.3.3.3 Audio distortion 46

5.3.4 Receiver requirement 47

5.3.4.1 Useable sensitivity 47

5.3.4.2 Useable bandwidth 48

5.3.4.3 Audio distortion 48

5.3.4.4 Signal and noise ratio 49

5.3.4.5 Adjacent channel rejection 50

5.3.4.6 Spurious response rejection 51

5.3.5 Radiated Field Intensity and Interference test 52

5.4 Transmission characteristics of public automatic switching exchange 53

5.4.1 General function 53

5.4.1.1 AC Power Failure 53

5.4.1.2 Release of the PSTN Line 53

5.4.2 Quiescent state noise 54

5.4.3 Transmission Loss 55

5.4.4 Cross talk 56

5.5 Protocol requirement 57

5.6 Caller ID requirement 57

5.6.1 FSK signals inspection standard 57

5.6.1.1 AC / DC Termination 57

5.6.1.1.1DC Termination 57

5.6.1.1.2 AC Termination 58

5.6.1.2 Timing 59

5.6.1.2.1 Alerting case 59

5.6.1.2.2 Start Time 60

5.6.1.2.3 End Time 60

5.6.1.3 Signaling case 61

5.6.1.3.1 Frequency, Level, Twist and Interference tolerance 61

5.6.1.4 Packet case 61

5.6.1.4.1 Channel seizure 61

5.6.1.4.2 Mark 62

5.6.1.4.3 Message type 62

5.6.1.4.4 Checksum 63

5.6.1.5 Presentation layer messages case 63

Table 10: Presentation layer messages 65

5.6.2 DTMF signaling Test criteria 65

5.6.2.1 DC resistance in the NIT state 65

5.6.2.2 Leaving the NIT state 66

5.6.2.3 DTMF signaling 67

5.6.2.4 DTMF Code / Number 67

5.6.2.5 Guarding against interference from the parallel equipment 68

5.7 Automatic redialing function requirement 69

5.7.1 Automatic dialing function requirement 69

5.7.1.1 Automatic repeated call attempts 69

5.7.1.2 Disconnection Time of automatic dialing 70

5.7.2 Automatic answer function requirement 70

Appendix I FSK Test status and Test Data 72

Appendix II DTMF Test Status and Test Data 81

Appendix III Recommentations of Test Environment and Test Equipments 82

Test environment 82





1.Scope


    1. Accordance

The specification is issued pursuant to paragraph 1 of Article 42 of the Telecommunications Acts.


    1. Application

This Technical Standard related to Terminal Equipment (TE), Series Equipment or Bridging equipment which is used in connecting to Public Switched Telephone Network (PSTN). It defines the general technical condition and requirements for inter-working and non-interference for Customer Equipment connected to PSTN.
The Terminal Equipment is defined in types A to I by their interface types. The following 3 pages is Test Matrix with the individual types:

A. TE in connecting to PSTN: with Telephone Functions.

B. TE in connecting to PSTN: with Answering Systems Functions.

C. TE in connecting to PSTN: with Cordless Phone Functions.

D. TE in connecting to PSTN: with FAX Machine Functions.

E. TE in connecting to PSTN: with Modem Functions.

F. TE in connecting to PSTN: with Caller ID Functions.

G. TE in connecting to PSTN: with PBX Functions.

H. TE in connecting to PSTN: with Key System Functions.

I. TE in connecting to PSTN: Functions other than Typpe A to H.


Test requirement product types list

Sec.

Titles

A

B

C

D

E

F

G

H

I

3.

EMC requirement

Y

Y

Y

Y

Y

Y

Y

Y

Y

4.

Safety requirement

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1

Public switch telephone network interface requirement

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.1

Basic requirement

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.2

Surge Protection

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.2.1

Telephone Line Surge Test

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.2.2

AC Power Line Surge Test



















5.1.3

Line polarity

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.4

Leakage current limitations

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.5

Insulation resistance

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.6

Characteristics of TE for ringing signals

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.6.1

Response to ringing signal

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.6.2

Ringing impedance

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.6.3

On-hook AC impedance

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.7

Off-hook DC resistance

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.8

Sending level limitation of

signals


Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.9

Transverse balance limitations

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.10

Return loss

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.11

Pulse dialing



















5.1.12

Dual tone multiple frequency (DTMF) dialing

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.12.1

Frequency combination

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.12.2

Signaling level

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.12.3

Signaling level difference

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.12.4

Tone duration

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.12.5

Pause duration

Y

Y

Y

Y

Y

Y

Y

Y

Y

5.1.13

Series equipment



















5.1.13.1

DC voltage drop of series equipment



















5.1.13.2

Insertion loss of series

equipment





















Test requirement product types list



Sec.

Titles

A

B

C

D

E

F

G

H

I

5.2

Handset function

Y

















5.2.1

Transmission objective reference

equivalent



Y

















5.2.1.1

Sending objective reference equivalent

Y

















5.2.1.2

Receiving objective reference equivalent

Y

















5.2.2

Transmission characteristics frequency response

Y

















5.2.2.1

Sending frequency response

Y

















5.2.2.2

Receiving frequency response

Y

















5.2.3

Side-tone objective reference equivalent

Y

















5.2.4

Distortion

Y

















5.2.4.1

Sending distortion

Y

















5.2.4.2

Receiving distortion

Y

















5.2.5

Receiver volume control

Y

















5.2.6

Continuous sound pressure level of receiver

Y

















5.3

Cordless phone function in connecting to PSTN





Y













5.3.1

Radio frequency requirement





Y













5.3.2

Security code requirement





Y













5.3.3

Transmitter requirement





Y













5.3.3.1

Carrier frequency





Y













5.3.3.2

Modulation sensitivity





Y













5.3.3.3

Audio distortion





Y













5.3.4

Receiver requirement





Y













5.3.4.1

Useable sensitivity





Y













5.3.4.2

Useable bandwidth





Y













5.3.4.3

Audio distortion





Y













5.3.4.4

Signal and noise ratio





Y













5.3.4.5

Adjacent channel rejection





Y













5.3.4.6

Spurious response rejection





Y













5.3.5

Radiated Field Intensity and Interference Test





Y












Test requirement product types list



Sec.

Titles

A

B

C

D

E

F

G

H

I

5.4

Transmission characteristics of public automatic switching exchange













Y

Y



5.4.1

General function













Y

Y



5.4.2

Quiescent state noise













Y

Y



5.4.3

Transmission loss













Y

Y



5.4.4

Cross talk













Y

Y



5.5

Protocol requirement







Y

Y









5.6

Caller ID requirement











Y







5.6.1

FSK signals inspection standard











Y







5.6.1.1

DC / AC Termination











Y







5.6.1.2

Timing











Y







5.6.1.3

Signaling case











Y







5.6.1.4

Packet case











Y







5.6.1.5

Presentation layer messages case











Y







5.6.2

DTMF signaling Test criteria











Y







5.6.2.1

DC resistance in the NIT state











Y







5.6.2.2

Leaving the NIT state











Y







5.6.2.3

DTMF signaling











Y







5.6.2.4

DTMF Code/Number











Y







5.6.2.5

Guarding against interference from

the parallel equipment













Y







5.7

Automatic dialing function requirement



















5.7.1

Automatic dialing function requirement



















5.7.1.1

Automatic repeated call attempts



















5.7.1.2

Disconnecting Time of automatic dialing



















5.7.2

Automatic answer function requirement



















Notes:

1).Y means the item of requirements which Terminal Equipment should comply with.

2).※means the item of requirements which Terminal Equipment should comply with if the function is provided.

3).Terminal Equipment should comply with item 5.4.4 Cross talk requirements.

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