Polycom SIP 3.1 manual Local / Centralized Conferencing, Manage Conferences

		Configuring Your System
	Configuration changes can performed centrally at the boot server:
Central	Configuration file:	Specify whether to allow a transfer during the proceeding state of a
(boot server)	sip.cfg	consultation call.
		• For more information, refer to SIP <SIP/> on page A-10.
		Specify whether a transfer is blind or not.
		• For more information, refer to Call Handling Configuration <call/>
		on page A-64.

Local / Centralized Conferencing

The phone can conference together the local user with the remote parties of a configurable number of independent calls by using the phone’s local audio processing resources for the audio bridging. There is no dependency on network signaling for local conferences.

The phone also supports centralized conferences for which external resources are used such as a conference bridge. This relies on network signaling.

	Note		Conferences are not available when the G.729 codec is enabled on the
			SoundStation IP 4000 conference phone.
			Configuration changes can performed centrally at the boot server:
Central		Configuration file:		Specify the conference hold behavior (all parties on hold or only host
(boot server)		sip.cfg		is on hold).
				• For more information, refer to Call Handling Configuration <call/>
				on page A-64.
				Specify whether or not all parties hear sound effects while setting up a
				conference.
				• For more information, refer to Call Handling Configuration <call/>
				on page A-64.
				Specify which type of conference to establish and the address of the
				centralized conference resource.
				• For more information, refer to Conference Setup <conference/>
				on page A-16.
			Manage Conferences
	Note		This feature is supported on the SoundPoint IP 550, 560, 650, and 670 desktop
			phones and the SoundStation IP 7000 conference phone.

This feature requires a license key for activation on all phones except the SoundStation IP 7000. Using this feature may require purchase of a license key or activation by Polycom channels. For more information, contact your Certified Polycom Reseller.

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