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VoIP Overview
Issue 5 October 2007 79
QoS
QoS can be controlled either locally or remotely. If control is local, it is possible to configure
QoS, RTCP, and RSVP parameters. If control is remote, QoS parameters are determined by the
MGC.
The following table lists the QoS fields and their descriptions.
QOS Control The source of QoS control. This parameter can only be changed via
the CLI. Possible values are:
● Local - The processor uses the local QoS parameters. If the
processor is using the local QoS parameters, the 802 Priority,
EF DSCP, and BBE DSCP fields can be configured.
● Remote - The processor receives its QoS parameters from the
Media Gateway Controller. All QoS parameters are read-only.
Table 26: VoIP resources - QoS Parameters
Field Description
802 Priority Priority based on a CoS standard which assigns rights and privileges
to users of a telephony network. Possible values are 0 - 7.
EF DSCP A type of differentiated service used to provide guaranteed bandwidth
across a network.
If sufficient bandwidth is available, the Expedited Forwarding class can
be used.
The values range are 0 - 63.
BBE DSCP A DiffServ class which is used per call to achieve the greatest possible
bandwidth. The values range between 0 - 63.
Table 25: VoIP resources - General Parameters (continued)
Field Description
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