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Enter your chosen QoS values in the SIP ToS/Diffserv (Range: 0 - 63) and RTP ToS/Diffserv (Range: 0 - 63) fields.

 Value range: 0 - 63.

 Common values for VoIP (default setting):

SIP

34

High service class for fast switching of the data flow (Expedited Flow)

RTP

46

Highest service class for fast forwarding of data packets (Expedited Forwarding)


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Do not change these values without consulting your network operator first. A higher value does not necessarily mean a higher priority. The value determines the service class, not the priority. The prioritisation procedure used in each case meets the requirements of this class and is not necessarily suitable for transferring voice data.
Detailed information on the Diffserv protocol can be found in RFC 2474 and RFC 3168.

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