Specifications

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AS/CA S002:2010 COPYRIGHT
OCTOBER 2010
4.2.27 Telecommunications Reference Conductor (TRC) 9
4.2.28 Telephone typewriter 9
4.2.29 Twist 9
4.2.30 Voice Frequency (VF) 9
5 REQUIREMENTS 10
5.1 General 10
5.1.1 Fail-safe operation 10
5.1.2 Line polarity 10
5.1.3 Transmitted voltages 11
5.1.4 Line-powered CE 11
5.1.5 Line connection 11
5.1.6 Keypads and dials 12
5.1.7 Insulation resistance of ring-in/loop-out PSTN lines 13
5.1.8 Emergency services access 14
5.2 Classification of CE 15
5.2.1 General 15
5.2.2 Line terminating equipment 15
5.2.3 Series equipment 16
5.2.4 Bridging equipment 17
5.3 Functional requirements 17
5.3.1 Number storage facility 17
5.3.2 Interconnection of PSTN lines 17
5.3.3 Intrusion tones 17
5.3.4 Supervisory tones 18
5.3.5 Automatic operation 19
5.4 Transmission requirements 22
5.4.1 Operational interference for transmission other than
speech and music 22
5.4.2 Power and voltage limits of transmissions other than
speech and music 22
5.4.3 Impedance 24
5.4.4 Impedance balance 24
5.4.5 Noise performance 24
5.4.6 Longitudinal power limits 25
5.5 Signalling requirements 25
5.5.1 Two-wire ring-in/loop-out PSTN line interface 25
5.6 Cordless telephones 32
5.6.1 Radiofrequency (RF) Standards 32
5.6.2 Security Measures 32