Cvoice question 62

Refer to the exhibit.

ephone-dn 21
number 2001
paging ip 239.0.1.21 port 2000

ephone-dn 22
number 2002
paging ip 239.0.2.22 port 2000
< missing-command >

ephone 1
paging-dn 20
ephone 2
paging-dn 20
ephone 3
paging-dn 21
ephone 4
paging-dn 21





When a call is placed to 2000, phones 1 and 2 are paged. A call to 2001 pages phones 3 and 4.
What command is missing so that a call to 2002 pages all four phones?

A. Paging group 20 21
B. Paging group 10 20 30 40
C. Paging group all
D. Paging group 2000 2001 2002
E. Paging group ephones-all



Answer: A

Explanation

In fact, the exhibit should show the configuration of ephone-dn 20, something like this:

ephone-dn 20
number 2000
paging ip 239.0.1.21 port 2000

To page all four phones which belong to group 20 & 21, we just need to assign these two groups to a number. The full command is:

CME_Voice(config-ephone-dn)# paging group 20,21

Notice:

We don't need to assign any ephones to paging-dn 22 because this ephone-dn represents a group of both paging-dns 20 and 21.

The IP address that follows the paging command is a multicast address.