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ITU-T G.9700 (07/2019)

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Fast access to subscriber terminals ( - Power spectral density specification
Recommendation ITU-T G.9700 specifies power spectral density (PSD) mask requirements for fast access to subscriber terminals (, 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.

The 2019 version of ITU-T G.9700 integrates the previous version and its amendments, and adds a new 106 MHz limit PSD mask intended to be used for transmission over networks with increased shielding, such as those with shielded cables or where cables are buried underground.
Approval date: 2019-07-12
Approval process:TAP
Status: In force
Maintenance responsibility: ITU-T Study Group 15
Further details: Patent statement(s)
Development history
[9 related work items in progress]
Ed. ITU-T Recommendation Status Summary Table of Contents Download
2 G.9700 (07/2019) In force
1.2 G.9700 (2014) Amd. 2 (06/2017) Superseded
1.1 G.9700 (2014) Amd. 1 (09/2016) Superseded
1 G.9700 (04/2014) Superseded