AS CA-S043.2:2016 pdf download.Requirements for Customer Equipment for connection to a metallic local loop interface of a Telecommunications Network——Part 2: Broadband.
4.2 Definitions
4.2.1 Broadband capability
A means of transmission of signals that uses frequencies above 20 kHz.
4.2.2 Equipment Class
A classification of CE used in this Standard to identity applicable requirements for CE designed or intended for connection to a metallic local loop interface.
Note: Table 1 lists the Equipment Classes and test critena used in this Standard. Each Equipment Class has a related Appendix which lists the requirements for the class. The Equipment Class and test cnteria do not relate to the class types of any other regime or country.
4.2.3 Power Spectral Density (PSD)
The power level and frequency content of a transmitted signal.
4.2.4 Public Switched Telephone (PSTN)
That part of the Telecommunications Network which enables any customer to establish a connection for voice frequency communication with any other customer either automatically or with operator assistance. Note: The PSTN has a nominal transmission bandwidth of 3 kHz.
4.2.5 Referenced Documents
Those documents set out in the column titled Group B’ in the tables in the Appendices.
4.2.6 Vectoring
The coordinated transmission and/or coordinated reception of signals of multiple DSL transceivers using techniques to mitigate the adverse effects of crosstalk to improve performance.
5 REQUIREMENTS
5.1 General
5.1.1 Applicable requirements
CE shall comply with the requirements of an Equipment Class as specified in Clauses 5.2 to 5.6. The Appendix detailing the test criteña and Referenced Documents for each Equipment Class is specified in Table 1.
5.1.2 Multiple Equipment Classes
Where more than one Equipment Class applies to the CE, the CE shall comply with each Equipment Class requirement.
5.1.3 Group A and Group B requirements CE shall comply with all the requirements of either: (a) Group A which specifies the parameter values and testing requirements; or (b) Group B which specifies either the test criteria or the requirements in the Referenced Documents for the applicable Equipment Class.
Where the CE does not support all line code options in an Equipment Class (e.g. where there are multiple types of coding), the CE shall comply with each requirement that has been implemented of the applicable Equipment Class.
Note 1: It is expected that most equipment which complies with international standards will comply under the relevant Group B requirements in this Standard. Group A requirements, which correspond to tighter (i.e. lower) PSD masks than the Group B requirements, are available as an alternative path for compliance of systems which cannot comy with the line code aspect of the Group B requirements.
Note 2: For Equipment Class 1 Ov, there is no option to comply with Group A requirements, because the line code and vectonng operation need to be consistent across aJI Class lOv services in the cables.
5.1.4 Non-compliant line code
CE that does not comply with a line code specified in Group B for the applicable Equipment Class, except Equipment Class lOv, shall use the Group A requirements.
5.2 Total average power
The total average power transmitted by CE shall not exceed the total average power limit over the specified frequency range, measured when the CE is transmitting maximum power, excluding any transient startup or initialisation phases.
5.3 Total average power in Voiceband
For each equipment class, the total average transmitted power in the voiceband shall be less than or equal to -lOdBm measured in 0 to 4 kHz, with 600 2 measuring impedance.
Note: This requirement is intended to limit pair to pair crosstalk into voice services to acceptable levels. For systems such as ADSL that coexist with voice serices on the same line, tighter requirements exist. Refer to AS/CA S041 [2].Compliance wth Clause 5.2 should be demonstrated using the methodology speOfied in Clause 6.4.1.
5.4 Power Spectral Density (PSD)
The PSD transmitted by CE shall not exceed the PSD mask, at any frequency, measured when the CE is transmitting maximum power, excluding any transient startup or initialisation phases. Compliance wth Clause 5.3 should be demonstrated using the methodology spec fled in Clause 6.4.2.
5.5 Line code
Where Group B requirements are used, the CE shall comply with the requirements for line code. Compliance wth Clause 5.4 should be by attestation by the supplier of the equipment.AS CA-S043.2 pdf download.
AS CA-S043.2:2016 pdf download
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