Cisco Systems 8961 Configuration System Enterprise Phone, Administration Guide, Cisco Unified IP

Chapter 8 Configuring Features, Templates, Services, and Users

Telephony Features Available for the Cisco Unified IP Phone

Table 8-1	Telephony Features for the Cisco Unified IP Phone (continued)
Feature		Description	Configuration Reference
Automatic Port		When the Cisco Unified CM administrator uses the	To configure the parameter in the Cisco
Synchronization		Remote Port Configuration feature to set the speed	Unified CM Administration application,
		and duplex function of an IP phone remotely, loss	choose Device > Phone, select the appropriate
		of packets can occur if one port is slower than the	IP phones, and scroll to the Product Specific
		other.	Configuration Layout pane.
		The Automatic Port Synchronization feature	To configure the setting on multiple phones
		synchronizes the ports to the lowest speed among	simultaneously, enable Automatic Port
		the two ports, which eliminates packet loss. When	Synchronization in the Enterprise Phone
		automatic port synchronization is enabled, it is	Configuration (System > Enterprise Phone
		recommended that both ports be configured for	Configuration).
		autonegotiate. If one port is enabled for
		autonegotiate and the other is at a fixed speed, the
		phone synchronizes to the fixed port speed.
		Note If both the ports are configured for fixed
		speed, the Automatic Port Synchronization
		feature is ineffective.
		Note The Remote Port Configuration and
		Automatic Port Synchronization features
		are compatible only with IEEE 802.3AF
		Power of Ethernet (PoE) switches.
		Switches that support only Cisco Inline
		Power are not compatible. Enabling this
		feature on phones that are connected to
		these types of switches could result in loss
		of connectivity to Cisco Unified CM, if the
		phone is powered by PoE.
Barge		Allows a user to join a non-private call on a shared	For more information, refer to:
		phone line. Barge features adds a user to a call and	• Cisco Unified Communications Manager
		converts it into a conference, allowing the user and
			Administration Guide, “Cisco Unified IP
		other parties to access conference features.
			Phone Configuration” chapter.
		Note The Cisco Unified IP Phone can still use
			• Cisco Unified Communications Manager
		barge when the Built in Bridge Enable
			System Guide, “Cisco Unified IP Phone”
		service parameter is set to off. To prevent a
			chapter.
		user from using the barge feature on the
			• Cisco Unified Communications Manager
		The Cisco Unified IP Phone, you must
		disable Barge in Feature Control Policy for	Features and Services Guide, “Barge and
		the phone.	Privacy” chapter.
			• Cisco Unified Communications Manager
			Administration Guide, “Feature Control
			Policy Configuration.”

Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)

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