1
Scope
2 References
2.1 Normative
2.2 Informative
3 Terms and definitions
4 Abbreviations, acronyms and
conventions
4.1 Abbreviations and acronyms
4.2 Conventions
5 Introduction
5.1 Media Terminal
Adapter (MTA)
6 CM/MTA monitoring requirements
6.1 CM/MTA alarms
6.1.1 CM failures
6.1.2 MTA failures
6.2 CM/MTA telemetry
6.2.1 Telemetry signals (External interface)
6.2.2 Telemetry Signal 1 – AC Fail
6.2.3 Telemetry Signal 2 – Replace Battery
6.2.4 Telemetry Signal 3 - Battery Missing
6.2.5 Telemetry Signal 4 - Battery Low
6.2.6 OSS event reporting
7 CM/MTA power requirements
7.1 Power considerations
7.2 Typical CM/MTA traffic model
7.3 Power passing tap limitations
7.4 Average power calculations
7.5 Power factor considerations
7.6 CM/MTA average power requirements
7.7 Service requirements under AC fail
conditions
7.8 Power source compatibility
7.9 Network powering
7.9.1 Center conductor delivery
7.9.2 Composite pair delivery
7.9.3 Network power characteristics
7.10 Local powering with battery backup
7.10.1 CM/MTA to UPS interface
8
MTA analog port requirements
8.1 Loop Start Signalling
8.2 General Supervision
8.3 General Ringing
8.4 Voice Grade Analog Transmission
Annex A -
Primary line events
Appendix I - Bibliography
Appendix II -
Typical CM/MTA traffic model
Appendix III -
Analog interface values for North America
III.1 Loop start signalling
III.1.1 Idle state voltage
III.1.2 Loop closure detection
III.1.3 Loop open detection
III.1.4 Off-hook delay
III.1.5 On-hook delay
III.1.6 Ringsplash
III.1.7 Distinctive ringing
III.1.8 Transmission path
III.2 General supervision
III.2.1 Off-hook loop current
III.2.2 Immunity to line crosses
III.2.3 System generated open intervals
III.2.4 Open switching interval distortion
III.2.5 Dial pulsing
III.2.6 DTMF signalling
III.2.7 Dialtone removal
III.3 General ringing
III.3.1 Alerting signals
III.3.2 Ringing delay
III.3.3 Ringing source
III.3.4 Ringing capability
III.3.5 Ringing capacity
III.3.6 Ring trip
III.3.7 Ring trip reporting delay
III.3.8 Ring trip immunity
III.4 Voice grade analog transmission
III.4.1 Input impedance
III.4.2 Hybrid balance
III.4.3 Longitudinal balance
III.4.4 MTA loss
III.4.5 MTA loss tolerance
III.4.6 Frequency response
III.4.7 60 Hz loss
III.4.8 Amplitude tracking
III.4.9 Overload compression
III.4.10 Idle channel noise
III.4.11 Signal to distortion
III.4.12 Impulse noise
III.4.13 Intermodulation distortion
III.4.14 Single frequency distortion
III.4.15 Generated tones
III.4.16 Peak-to-average ratio
III.4.17 Channel crosstalk