Case study

Agent Phone: Polycom CX300 HID protocol findings

Agent Phone uses a Polycom CX300 desk phone as an attention and dictation controller for coding agents. Its HID documentation preserves earlier protocol research and adds device-probe findings on report byte layouts, the voicemail LED, and host-controlled microphone mute. The Python daemon implements those controls alongside the phone’s audio and keypad handling.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 1
Last commit: 2026-10-12
Language: Python

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: macOS, Python 3.11+, a Polycom CX300, and hidapi for the documented USB setup.
Prerequisites: Dictation setup uses ffmpeg and whisper.cpp.
License: Code is under PolyForm Noncommercial 1.0.0; the CX300 protocol documents are additionally CC BY 4.0.

Cite

BibTeX

@misc{agent-phone-cx300-case,
  title = {{Agent Phone: Polycom CX300 HID protocol findings}},
  howpublished = {\url{https://github.com/SJM7/agent-phone}},
  url = {https://github.com/SJM7/agent-phone},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/agent-phone-cx300-case/}}
}

Plain text

Agent Phone: Polycom CX300 HID protocol findings. https://github.com/SJM7/agent-phone (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/agent-phone-cx300-case/

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About this entry

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Primary sources

README.md GitHub · SJM7/agent-phone · Revision d3a2ef7
docs/cx300-hid-protocol.md GitHub · SJM7/agent-phone · Revision d3a2ef7