Cisco TelePresence Server 7010 Product User Manual page 83

Field Field description
Default The network capacity used by the
bandwidth media channels established by the
(both to Cisco TelePresence Server to and
and from from this endpoint or endpoint
the group.
endpoint)
Maximum Sets the maximum payload size (in
transmitted bytes) of the packets sent by the
video Cisco TelePresence Server for
packet size outgoing video streams (from the
Cisco TelePresence Server to
connected video endpoints).
Field Field description
<use Selecting this check box overrides any
default> settings in the next three fields and uses
the equivalent default conference
settings.
Received Selecting this check box allows the
video: flow Cisco TelePresence Server to request
control on that the endpoint/endpoint group send
video lower speed video if it fails to receive all
errors the packets which comprise the far end's
video stream.
Cisco TelePresence Server Product User Guide
Network settings
Usage tips
When the Cisco TelePresence Server makes a call to an
endpoint, it chooses the maximum bandwidth that is
allowed to be used for the media channels which
comprise that call. This field sets that maximum
bandwidth, and is the total bandwidth of the audio,
video, and content channels combined.
This setting overwrites (for this endpoint) the Default
bandwidth (both to and from the server) setting made
for all endpoints on the
settings page.
Video streams generally contain packets of different
lengths. This parameter only sets the maximum size of a
transmitted network datagram. The Cisco TelePresence
Server optimally splits the video stream into packets of
this size or smaller. Thus, most transmitted packets will
not reach this maximum size.
Increasing this value can cause fragmentation of packets
which impairs performance and can cause packet loss.
Decreasing this value too much can also impair
performance.
Note: You should only modify this setting if there is a
known packet size restriction in the path between the
Cisco TelePresence Server and potential connected
endpoints.
Optimization settings
Usage tips
The default conference settings are on the
Configuration > System settings
The Cisco TelePresence Server can send these
messages to endpoints requesting that the
bandwidth of the video that they are sending be
decreased based on the quality of video received
by the Cisco TelePresence Server.
If there is a bandwidth limitation in the path
between the endpoint/endpoint group and the
Cisco TelePresence Server, it is better for the
Cisco TelePresence Server to receive every
packet of a lower rate stream than to miss some
packets of a higher rate stream.
Endpoints and endpoint groups
Configuration > System
page.
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