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Unify OpenScape Desk Phone CP205 Manual

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administration.fm
A31003-C1000-M102-5-76A9, 09/2017
OpenScape Desk Phone CP200/CP205/CP400/CP600 HFA, Administration Manual
53
Administration
IP Network Parameters
Administration via WBM
Network > QoS
Administration via Local Phone
3.3.1.2 Layer 3 / Diffserv
Diffserv assigns a class of service to an IP packet by adding an entry in the IP header.
Traffic flows are classified into 3 per-hop behavior groups:
1. Default
Any traffic that does not meet the requirements of any of the other defined classes is placed
in the default per-hop behaviour group. Typically, the forwarding has best-effort forwarding
characteristics. The DSCP (Diffserv Codepoint) value for Default is "0 0 0000".
2. Expedited Forwarding (EF referred to RFC 3246)
Expedited Forwarding is used for voice (RTP streams) by default. It effectively creates a
special low-latency path in the network. The DSCP (Diffserv Codepoint) value for EF is
"101110".
3. Assured Forwarding (AF referred to RFC 2597)
Assured forwarding is used for signaling messages by default (AF31). It is less stringent
than EF in a multiple dropping system. The AF values are containing two digits X and Y
(AFXY), where X is describing the priority class and Y the drop level.
Four classes X are reserved for AFXY: AF1Y (low priority), AF2Y, AF3Y and AF4Y (high
priority).
|
--- Admin
|
--- Network
|
--- QoS
|
--- Service
|--- Layer 2
|--- Layer 2 voice
|--- Layer 2 signalling
|
--- Layer 2 default
Layer 2 signalling
Layer 2 default
Layer 3 voice
Layer 3 signalling
Layer 2 voice
Layer 2
5
0
QoS
3
Layer 3
EF
AF31
;
… 53 …


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