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1. Phone Features

Chapter 40

Cisco IP Phones

Note

Making and Receiving Multiple Calls Per Directory Number

Note

Transfer and Conference Behavior

OL-7135-01

This check box only applies to the actual directory number and partition. It does

not apply to the other device settings such as voice-messaging profile, call

forwarding options, or MLPP. If any of these settings are changed for a shared

line, then all devices get changed.

For directory number configuration and update information, see

Directory Numbers"

in the Cisco CallManager Administration Guide. For

information about deleting and updating unassigned directory numbers, see

"Deleting Unassigned Directory Numbers"

Numbers"

in the Cisco CallManager Administration Guide.

Cisco CallManager supports various behaviors when users make and receive

multiple calls per DN: Transfer/Direct Transfer and Conference/Join.

Transfer allows different line appearances in one device to initiate independent

transfer transactions and allows multiple transfer transactions per line appearance

per device.

Conference allows different line appearances in one device to initiate independent

conference transactions and allows multiple conference transactions per line

appearance per device.

Devices that do not support multicall display, such as Cisco IP Phone Model

7910, cannot transfer or conference two existing calls together.

If only one active call exists on the directory number, the first invocation of a

feature results in putting the active call on hold and initiating a new call by using

the same directory number. When the new call gets set up, the second invocation

of the same feature starts the feature operation. The first invocation of

Transfer/Conference will always initiate a new call by using the same directory

number, after putting the active call on hold.

Directory Numbers

and

"Updating Unassigned Directory

Cisco CallManager System Guide

"Configuring

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