You want to configure a shared line configuration whereby two phones will ring simultaneously when a caller
dials extension 301.
Which of the following command sets should you issue? (Select the best answer.)
A.
CME(config)#ephonedn 21
CME(configephonedn)#number 301
CME(configephonedn)#ephonedn 22
CME(configephonedn)#number 301
CME(configephonedn)#ephone 1
CME(configephone)#button 1:21 2:22
B.
CME(config)#ephonedn 21
CME(configephonedn)#number 301
CME(configephonedn)#ephonedn 22
CME(configephonedn)#number 301
CME(configephonedn)#ephone 1
CME(configephone)#button 1:21
CME(configephone)#ephone 2
CME(configephone)#button 1:22
C.
CME(config)#ephonedn 21
CME(configephonedn)#number 301
CME(configephonedn)#preference 1
CME(configephonedn)#ephone 1
CME(configephone)#button 1:21
CME(configephone)#ephone 2CME(configephone)#button 2:21
D.
CME(config)#ephonedn 21 dualline
CME(configephonedn)#number 301
CME(configephonedn)#ephone 2
CME(configephone)#button 1:21
Explanation:
You should issue the following command set to configure a shared line configuration whereby two phones will
ring simultaneously when a caller dials extension 301:
CME(config)#ephonedn 21
CME(configephonedn)#number 301
CME(configephonedn)#preference 1
CME(configephonedn)#ephone 1
CME(configephone)#button 1:21
CME(configephone)#ephone 2
CME(configephone)#button 2:21
The ephonedn 21 command creates ephonedn 21. The number 301 command
associates extension 301 with ephonedn 21. The ephone 1 command creates ephone 1, and the ephone 2
command creates ephone 2. The button 1:21 command associates button 1 on ephone 1 with ephonedn 21Íž
similarly, the button 2:21 command associates button 2 on ephone 2 with ephonedn 21.
When multiple ephones are configured with the same extension number, as they are in this scenario, they are
configured as shared lines. When a caller dials extension 301, ephonedn 21 will be matched and all of the
ephones that are associated with ephonedn 21 will ring.
The preference 1 command is irrelevant to this configuration. The preference command is used to indicate the
order in which ephonedns are selected when multiple ephonedns are configured with the same extension
number. However, in this scenario, there is only one ephonedn.
It is also possible to configure phones with a shared line when those phones are registered with Cisco Unified
Communications Manager (UCM) instead of Cisco Unified Communications Manager Express (CME). To
configure a shared line in UCM Administration, navigate to the phones on which you want to share the line and
add the directory number (dn) for the shared line. For example, if User 1 has a primary dn of 2401 and User 2
has a primary dn of 2402, you can configure 2401 as a shared line by adding it as another dn on the User 2
phone.
You should not issue the following command set to configure a shared line configuration whereby two phones
will ring simultaneously when a caller dials extension 301:
CME(config)#ephonedn 21
CME(configephonedn)#number 301
CME(configephonedn)#ephonedn 22
CME(configephonedn)#number 301
CME(configephonedn)#ephone 1
CME(configephone)#button 1:21 2:22
This configuration has one ephone with two ephonedns. The button 1:21 2:22command associates button 1
with ephonedn 21 and button 2 with ephonedn 22. Because the ephonedns are not configured with the
preference command, they will use the default preference value of 0. Both preference values are the same, so
when a call is placed to extension 301, either ephonedn 21 or ephonedn 22 will be selected randomly.
Therefore, either button 1 or button 2 on ephone 1 will ring.
You should not issue the following command set to configure a shared line configuration whereby two phones
will ring simultaneously when a caller dials extension 301:
CME(config)#ephonedn 21
CME(configephonedn)#number 301
CME(configephonedn)#ephonedn 22
CME(configephonedn)#number 301CME(configephonedn)#ephone 1
CME(configephone)#button 1:21
CME(configephone)#ephone 2
CME(configephone)#button 1:22
This configuration has two ephones, each with its own ephonedn. Button 1 of ephone 1 is associated with
ephonedn 21, and button 1 of ephone 2 is associated with ephonedn 22. The ephonedns are not configured
with the preference command, so they will use the default preference value of 0. As a result, either ephone-dn
21 or ephonedn 22 will be selected at random when a call is placed to extension 301, and only one phone will
ring.
You should not issue the following command set to configure a shared line configuration whereby two phones
will ring simultaneously when a caller dials extension 301:
CME(config)#ephonedn 21 dualline
CME(configephonedn)#number 301
CME(configephonedn)#ephone 2
CME(configephone)#button 1:21
This is a dualline configuration with one ephone associated with one ephonedn. An ephonedn configured with
the dualline keyword is capable of handling two calls simultaneously, thereby enabling the ephonedn to support
call waiting, call conferencing, and consult transfers. The button 1:21 command associates button 1 of ephone
2 with ephonedn 21. When a call is placed to extension 301 while ephonedn 21 is in use, the receiver will hear
a call waiting beep.https://www.cisco.com/en/US/docs/ios/12_3/vvf_r/
vrg_p1_ps1839_TSD_Products_Command_Reference_Chapter.html#wp1014099