Polycom 40/0 Manual De Usuario

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System Configuration
Polycom, Inc. 
39
 
 
 
Click OK. The server restarts to apply your changes.
Configure SNMP
Your system provides a standard SNMP (Simple Network Management Protocol) interface which supports 
SNMP version 1, version 2, and version 3 queries with confidentiality, authentication, and integrity functions 
Parameter
Description
Enable QoS for Signaling and 
Media
Enable configuration of the QoS settings. if not selected, the system uses 
the default QoS settings.
Type
DiffServ and Precedence are two methods for encoding packet priority. The 
priority set here for audio and video packets should match the priority set in 
the network routers.
Differv: Select when the network router uses Differv for priority 
encoding. If this option is selected, enter values in the Audio and Video 
fields. The value range is 0-63. 
Note: If you select DiffServ but your router does not support this 
standard, IP packets queue on the same communication links with data 
packets. This non-prioritized queueing greatly increases the latency and 
jitters in their delivery and can negatively impact performance. 
Precedence: Select this option when the network router uses 
Precedence for priority encoding, or when you are not sure which 
method is used by the router. Precedence should be matched with None 
in the ToS field. The value range is 0-5. If this option is selected, enter 
values in the Audio and Video fields. The value range is 0-5. 
Note: Precedence is the default mode as it is capable of providing 
priority services to all types of routers and is currently the most common 
mechanism. 
Audio / Video
Specify the priority for audio and video IP packets. 
The recommended priority is 4 for audio and video to ensure that the packet 
delay for both is the same, that audio and video packets are synchronized, 
and to ensure lip and audio synchronization (lip sync). 
Control
Specify the priority for controlling packets.
ToS
Select the ToS (Type of Service) that defines optimization tagging for routing 
the conference audio and video packets. 
Delay: The recommended default for video conferencing: prioritized 
audio and video packets tagged with this definition are delivered with 
minimal delay.
None: No optimization definition is applied. This is a compatibility mode 
in which routing is based on Precedence priority settings only. Select 
None if you do not know which standard your router supports. 
QoS settings applies to SIP and H.323 calls only, it does not apply to 
streaming.