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19.1. Feature Description Previous topic Parent topic Child topic Next topic

To support the Payload Switching feature, the Direct Media Connection DMC feature is used for Voice over IP (VoIP) connections in OpenScape 4000.
Direct Media Connections DMC can be described and defined in the following way:
  1. The payload (voice channel) of an OpenScape 4000 internal or networkwide voice connection will be exchanged within a LAN in which a direct IP connection is possible without conversion into a TDM data stream.
    By the use of the feature "DMC Any-to-any" payload data is transported within a HiPath 4000/OpenScape 4000 network directly between the IP endpoints without several IP-TDM conversions of the payload. This direct payload connection is called Direct Media Connection (DMC).
    DMC has two purposes:
  • Avoid degradation of speech quality by minimizing the number of IP/TDM hops/conversions.
  • Optimize the bandwidth: for those cases activation of VAD is very important.
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