ITU-T G.9710 PDF

This Recommendation specifies the power spectral density for multi-gigabit fast access to subscriber terminals (MGfast), which supports transmission at an aggregate net data rate (the sum of upstream and downstream rates) up to approximately 10 Gbit/s on metallic wires, including twisted pairs and coaxial cables. The adaptations to these two media are specified in Annexes P and Q respectively. In this edition of the Recommendation, only one peer MTU-R/NT is connected to the MTU at the optical network unit (MTU-O); multiple MTU-R/NTs connecting to a single MTU-O is out of scope of this edition of the Recommendation. MGfast spectral usage complies with the 424 MHz and 848 MHz PSD types, while in this edition of the Recommendation only the 424 MHz power spectral density (PSD) type is specified.

It specifies:

− power spectral density (PSD) limit mask requirements;

− a set of tools to support reduction of the transmit PSD mask; and

− a methodology and termination impedance requirements for transmit PSD verification.

This ensures that the technology can address:

− regional requirements;

− operator deployment requirements, for example, compatibility with other digital subscriber line (DSL) technologies;

− applicable electromagnetic compatibility (EMC) regulations or standards; and

− local EMC issues.

Conformance of equipment with this ITU-T Recommendation may not ensure compliance with specific national or regional regulations on electromagnetic compatibility when installations are taken into service.