New systems article covering the full VoIP stack: vendor model (PacketDial brand / NetSapiens
platform / OIT wholesaler / YMCS phones), the PBX API + packetdial skill (reads + gated writes +
onboard-domain), the Yealink/YMCS side + yealink-ymcs skill (one ACG key -> all client sites, RPS),
the onboarding pipeline, vault paths, and known gotchas. Sources: the 3 06-22 session logs + both
skill docs + the vendor-stack memory. Indexed under Systems.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Mike Swanson
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