Specifications

5-9
Cisco IOS Telephony Service, Version 2.02
Chapter 5 Command Reference
button (ephone)
button (ephone)
To associate directory numbers (ephone-dn) with individual buttons on a Cisco IP phone, use the button
command in ephone configuration mode. To delete directory numbers from the buttons on a Cisco IP
phone, use the no form of this command.
button button-number:dn-tag button-number:dn-tag
no button button-number:dn-tag button-number:dn-tag
Syntax Description
Defaults No default behavior or values.
Command Modes Ephone configuration
Command History
Usage Guidelines The button command assigns telephone lines to the Cisco IP phones by assigning a button number to
the Cisco IP phone directory number.
Telephone services such as call waiting and three-party conferences require a minimum of two phone
lines (ephone-dn) to be available and configured on the Cisco IP phone. The Cisco IP Phone 7910 has
only one physical line button. To support call waiting and three-party conferences on a
Cisco IP Phone 7910, a second (hidden) line is required. This line can not be selected directly using a
line button. You can access the second line when you press the conference button.
button-number Button numbers for telephone lines on a Cisco IP phone. The valid range is
from 1 to 6 telephone lines for the Cisco IP Phone 7960 and 1 to 2 lines for
the Cisco IP Phone 7940, Cisco IP Phone 7910, and Cisco IP Conference
Station 7935.
Note The Cisco IP Phone 7910 has only one physical line button, but you
can assign up to two lines to the phone.
dn-tag Previously defined directory number tag.
Release Modification
12.1(5)YD This command was introduced on the following platforms:
Cisco 2600 series and Cisco 3600 series multiservice routers, and
Cisco IAD2420 series IADs.
12.2(2)XT This command was implemented on the Cisco 1750 and
Cisco 1751 multiservice routers.
12.2(8)T This command was integrated into Cisco IOS Release 12.2(8)T and
implemented on the Cisco 3725 and Cisco 3745 routers.
12.2(8)T1 This command was implemented on the Cisco 2600-XM and Cisco 2691
routers.
12.2(11)T This command was integrated into Cisco IOS Release 12.2(11)T and
implemented on the Cisco 1760 routers.