Mission Statement:

The Physical Layer Transmission Work Area provides test plans, technical documentation, and marketing papers to enable multi-vendor interoperability in deployments for both access and in-premises networks.

Work Area Directors:

Herman Verbueken, Nokia

Evan Sun, Huawei

Business Impact:

The focus of the PHYtx WA is to develop technical recommendations which will help service providers deploy equipment that will give a better quality of experience for their end users.

Standardized interoperability and certification, create a trusted base of equipment and services providing operators with an accelerated time to market, avoiding large investments in time and customizations. Interoperability provides invaluable intelligence as feedback to both developers and implementers of new products and services.


  • Definition of test plans for access network physical layer transmission technologies (such as VDSL2 and Gfast) and Reverse Power Feeding technologies
  • Definition of test plans for in-premises network physical layer transmission technologies such as power line communications
  • Creation of best practice or use cases documentation for advanced features, such as  Fiber extensions, cable models.

Active Project Streams

Project Stream


PS Leaders

Non-PS Assigned

Projects that don’t fit under the scope of an existing Project Stream or if they fit under the scope of more than one Project Stream, are developed under the Non-PS Assigned category or are handled on Work Area level.

Physical Layer Transmission Work Area Email Lists

PHYtx Calls, Minutes, Agendas

See also:

Active Non-PS assigned Projects

WT/MD/SD# Projects
AbstractRelated ContributionsEditors
WT-285i2a1Copper Transmission Models for Testing above 30 MHzIssue 2 Amendment 1 adds the Australian cable models as appendix GWT-285
WT-476Performance Test Plan for use of G.hn technology in access scenariosThe goal is to provide performance requirements between a G.hn Aggregation Multiplexer (GAM) and one or more G.hn Network Terminations (GNTs). The focus is on the device level (DLL and PHY) testing, similar to how TR-380 is defined.  This performance test plan will include test setup information, equipment configuration requirements, test procedures, and performance requirements for each test case.WT-476
DTP-337i4c1G.fast Certification Test Plan

This document provides a certification test plan for ITU‑T Recommendation G.9700 “Fast access to subscriber terminals (G.fast) – Power spectral density specification” and G.9701 “Fast access to subscriber terminals (G.fast) – Physical layer specification”. This test plan is specifically conceived for the basic interoperability objectives of the Broadband Forum G.fast Certification Program.

Technical content in this corrigendum is to correct some wrong references to other Broadband forum documents.

WT-338i3Reverse Power Feed  Test Plan

With short copper loops required by G.fast Distribution Point Units (DPUs) that push the deployment of the DPU/MDUs closer to the customer premise, local power and forward power may not be viable to cost or location. To power the DPU, power will come from the customer premises location over the copper pair; this is referred to as Reverse Power Feed (RPF).

This document specifies tests for the RPF functions of a DPU and the customer premises’ Power Supply Equipment (PSE) either as a stand-alone device or as a function integrated in a G.fast Network Termination.

Issue 3 will define a set of RPF-over-coax functional and safety test cases for the Power Source Equipment (PSE) implemented according to ETSI specification TS 101 548-2, either as a stand-alone device or as a function integrated in the G.fast (G.9700 and G.9701) network termination, and reversely powered DPU implementations.


Completed or Inactive  Project Streams