Refer to the exhibit.

An engineer is trying to determine the status of the ISDN D Channel on a new PRI circuit, types in the
show isdn status command, and sees this output. Which two pieces of information can be determined
from this output? (Choose two.)

A.
The provider is using the 5ESS protocol.

B.
There are four channels.

C.
The connection to the Cisco Unified Communications Manager has been established.

D.
The D channel is working correctly.

E.
No active calls are established.