Cisco Systems 8.6 Configuration System Enterprise Phone, Services Guide, External Call Transfer

Chapter 5 Configuring Features, Templates, Services, and Users

Telephony Features Available for the Cisco Unified IP Phone

Table 5-1	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 (and cBarge)		Allows a user to join a non-private call on a shared	For more information, see:
		phone line. Barge features include cBarge and	• Cisco Unified Communications Manager
		Barge.
			Administration Guide, Cisco Unified IP
		• cBarge adds a user to a call and converts it into	Phone Configuration.
		a conference, allowing the user and other	• Cisco Unified Communications Manager
		parties to access conference features.
			System Guide, Cisco Unified IP Phones.
		• Barge adds a user to a call but does not convert	• Cisco Unified Communications Manager
		the call into a conference.
			Features and Services Guide, Barge and
		The phones support Barge in two conference	Privacy.
		modes:
		• Built-in conference bridge at the target device
		(the phone that is being barged). This mode
		uses the Barge softkey.
		• Shared conference bridge. This mode uses the
		cBarge softkey.
Block external to		Prevents users from transferring an external call to	For more information, see Cisco Unified
external transfer		another external number.	Communications Manager Features and
			Services Guide, External Call Transfer
			Restrictions.

Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)

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