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Configuring QoS settings
Cisco TelePresence ISDN Gateway 2.1 Online help (Printable format) 68 of 135
Configuring QoS settings
To configure Quality of Service (QoS) on the ISDN Gateway for audio and video, go to Network > QoS.
QoS is a term that refers to a network's ability to customize the treatment of specific classes of data. For
example, QoS can be used to prioritize audio transmissions and video transmissions over HTTP traffic.
These settings affect all audio and video packets to H.323 endpoints. All other packets are sent with a
QoS of 0.
The ISDN Gateway allows you to set a six-bit value for Type of Service (IPv4) or Traffic Class (IPv6),
which can be interpreted by networks as either Type of Service (ToS) or Differentiated Services
(DiffServ).
Note: Do not alter the QoS settings unless you need to do so.
Further information about QoS, including values for ToS and DiffServ, can be found in the following
RFCs, available on the Internet Engineering Task Force web site
www.ietf.org:
RFC 791
RFC 2474
RFC 2597
RFC 3246
In this section:
About QoS configuration settings
ToS configuration
DiffServ configuration
Default settings
About QoS configuration settings
The table below describes the settings on the Network > QoS page.
Field
Field description Usage tips
IPv4 configuration
Audio
Six bit binary field for prioritizing audio data
packets on the network.
Do not alter these settings unless
you need to.
Video
Six bit binary field for prioritizing video data
packets on the network.
IPv6 configuration