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Songcast OHM/OHU Protocol Specification (Version 1.0)

Introduction

OHM, OHU, together with OHZ (discussed separately here), form a family of OpenHome protocols for the transport of audio around a home network.

  • OHM provides large scale one to many communication using multicast UDP.
  • OHU provides small scale one to many communication using unicast UDP.

Message Format

The OHM and OHU protocols share the same message format.

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