Page 650 - 5G Basics - Core Network Aspects

2 Transport aspects

Summary

Recommendation ITU-T G.9700 specifies power spectral density (PSD) mask requirements for fast access to
subscriber terminals (G.fast), a set of tools to support reduction of the transmit PSD mask, profile control
parameters that determine spectral content, including the allowable maximum aggregate transmit power
into a specified termination impedance, and a methodology for transmit PSD verification. It complements
the physical layer (PHY) specification in Recommendation ITU-T G.9701.

Amendment 1 provided support for a new 106 MHz profile with +8 dBm maximum aggregate transmit
power.
Amendment 2 aligns the text of clause 6.5 on notching of specific frequency bands with ITU-T G.9701
(2014) and its latest amendments, completes the specification of 212 MHz profiles, adds Annex X
''Adaptation to the coax medium'' in support of Annex X ''Operation without multi-line coordination
intended for a crosstalk free environment'' that has been specified in amendment 3 to ITU-T G.9701, and
updates the table of International amateur radio frequencies in Appendix I.

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