Setting The Audio Protocol For The Microsoft Client Running On A Single Core Pc - Polycom RealPresence 800s Administrator's Manual

Polycom® RealPresence Collaboration Server 800s Administrator's Guide
In some configurations, the following flags may require modifications when
MS_ENVIRONMENT flag is set to YES:
Table I-2
Flag Name
SIP_FREE_VIDEO_RESOURCES
SIP_FAST_UPDATE_INTERVAL_
ENV
Setting the audio protocol for the Microsoft Client running on a single
core PC
By default, Lync Clients are connected to conferences using the G.722.1 audio algorithm.
However, when these clients are hosted on single processor workstations, they may
experience audio quality problems when this algorithm is used.
The System Flag FORCE_AUDIO_CODEC_FOR_MS_SINGLE_CORE is used to force the
use of a specific Audio algorithm such as G.711 when a Lync Client is detected as being
hosted on a single core processor.
This flag can be set to:
•
•
Possible values: AUTO, G711A, G711U, G722
Default: G711A
I-18
Additional Microsoft Environment Flags in the Collaboration Server
MCMS_PARAMETERS_USER Tab
AUTO – No forcing occurs and the Collaboration Server negotiates a full set of Audio
algorithm during capabilities exchange.
G711A/U or G722 – Set this flag value according to the hosting workstation capabilities.
If the Collaboration Server detects single core host during capabilities exchange it will
assign a G.711 or G.722 Audio algorithm according to the flag value.
Value and Description
Default value in Microsoft environment: NO.
When set to NO, video resources that were allocated to
participants remain allocated to the participants as long as
they are connected to the conference even if the call was
changed to audio only. The system does not allocate the
resources to other participants ensuring that the participants
have the appropriate resources in case they want to return to
the video call.
The system allocates the resources according to the
participant's endpoint capabilities, with a minimum of one CIF
video resource.
When this flag is set to YES, video ports are dynamically
allocated or released according to the in the endpoint
capabilities. For example, when an audio Only call is
escalated to Video and vice versa or when the resolution is
changed.
Default setting is 0 to prevent the Collaboration Server from
automatically sending an Intra request to all SIP endpoints.
Enter n (where n is any number of seconds other than 0) to
let the Collaboration Server automatically send an Intra
request to all SIP endpoints every n seconds.
It is recommended to set the flag to 0 and modify the
frequency in which the request is sent at the endpoint level
(as defined in the next flag).
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