feat: add channel-level echo suppression spec points#433

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mattheworiordan wants to merge 3 commits intomainfrom

feature/channel-echo-param

Commits on Mar 7, 2026

feat: add channel-level echo suppression spec points

mattheworiordan
authored and
ttypic
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fix: revert docstring change for params field

authored and
ttypic
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fix: remove cross-references from RTN2b and TO3h to RTL4n

authored and
ttypic
committed