Polycom 3150-16966-002, RMX 1000 manual Ports, 11-8, Type, Audio / Video, Tos

Chapter 11 – IP Service Settings

Parameter

Description

	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.
	ƒ 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
Type	non-prioritized queueing greatly increases the latency and
	jitters in their delivery and can negatively impact
	performance.
	ƒ 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. If this option is selected, enter values in the Audio
	and Video fields, in the value range of 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.
	You can prioritize audio and video IP packets to ensure
	that all participants in the conference hear and see each
Audio / Video	other clearly.
	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).
	Select the Type of Service (ToS) that defines optimization
	tagging for routing the conference audio and video
	packets.
	ƒ Delay: The recommended default for video
Tos	conferencing; prioritized audio and video packets tagged
	with this definition are delivered with minimal delay
	ƒ 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.

Ports

Users can set firewall-allowed ports that are used for multimedia conference calls. In the IP Network Services interface, click Ports to configure the port information.

Figure 11-7IP Network Services – Ports

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