Which of the following command sets can you issue to as…

Which of the following command sets can you issue to associate an IP phone with an ephone? (Choose two.)

A.
telephony-service auto assign

B.
telephony-service autoregephone

C.
ephone 1
mac-address 0019.8765.4321

D.
ephone-dn 1
mac-address 0019.8765.4321

E.
ephone 1
ip-address 192.168.12.34

F.
ephone-dn 1
ip-address 192.168.12.34

Explanation:
You can issue the following command set to associate an IP phone with an ephone:
ephone 1
mac-address 0019.8765.4321
The ephone 1 command configures ephone number 1. The mac-address 0019.8765.4321 command
associates ephone number 1 with the IP phone that has Media Access Control (MAC) address
0019:8765:4321. Alternatively, you can issue the following command set to associate an IP phone with an
ephone:
telephony-service
auto-reg-ephone
Issuing the telephony-service command puts the router into telephony-service configuration mode, where you
can issue commands that configure telephony settings on the router. Issuing the auto-reg-ephone command
configures a router to automatically associate the MAC address of an IP phone with the first unassigned
ephone on the router if the IP phone’s MAC address is not already associated with an ephone. If all the
ephones on the router are associated with IP phones, the router will create a new ephone, provided that the
number of configured ephones does not exceed the value of the max-ephones command. The max-ephones
command specifies the maximum number of ephones that you can configure on a router.
The following command set will not associate an IP phone with an ephone, because ephones are associated
with MAC addresses, not IP addresses:
ephone 1
ip-address 192.168.12.34
The following command sets will not associate an IP phone with an ephone, because ephones are not
configured by issuing the ephone-dn command:
ephone-dn 1
ip-address 192.168.12.34
ephone-dn 1
mac-address 0019.8765.4321
The following command set will not associate an IP phone with an ephone, because the auto assign command
associates an ephone button with an existing, unused ephone-dn:telephony-service
auto assign

Cisco: Cisco Unified CME Commands: mac-address (ephone)
Cisco: Cisco Unified CME Commands: auto-reg-ephone
Cisco: Cisco Unified CME Commands: auto assign