what four steps are necessary to implement COR?

Using Cisco Unified Communications Manager Express, what four steps are necessary to implement COR? (Choose four)

A.
Configure SRST.

B.
Define COR labels.

C.
Configure COR lists.

D.
Assign COR list to ephone-DN.

E.
Configure COR lists on voice ports.

F.
Configure dial peers and assign COR lists.

Explanation:
Four steps to configure COR on Cisco IOS gateway using Cisco Unified Communications Manager Express:

1) Define COR labels.
2) Configure COR lists.
3) Configure dial peers and assign COR lists.
4) Assign COR lists to ephone-dn.

For example, we will define three calling privilege classes:

Local: This class should allow emergency and local calls.
Long Distance: This class should allow emergency, local, and long distance calls.
International: This class should allow emergency, local, long distance, and international calls.

Step 1: Define the four COR labels to be used as COR list members with the command dial-peer cor custom.

Router(config)#dial-peer cor custom
Router(config-dp-cor)#name 911
Router(config-dp-cor)#name local
Router(config-dp-cor)#name ld
Router(config-dp-cor)#name intl

Description

* 911: Allows calls to emergency 911
* local: Allows local calls only
* ld: Allows long distance calls
* intl: Allows international calls

Step 2: Define the COR lists that will be assigned as outgoing to the PSTN dial peers with the command dial-peer cor list.

Router(config-dp-corlist)#dial-peer cor list 911call
Router(config-dp-corlist)#member 911
Router(config-dp-corlist)#dial-peer cor list localcall
Router(config-dp-corlist)#member local
Router(config-dp-corlist)#dial-peer cor list ldcall
Router(config-dp-corlist)#member ld
Router(config-dp-corlist)#dial-peer cor list intlcall
Router(config-dp-corlist)#member intl

Define the COR lists that will be assigned as incoming from the local dial peers with the command dial-peer cor list .

Router(config)#dial-peer cor list local
Router(config-dp-corlist)#member 911
Router(config-dp-corlist)#member local

Router(config)#dial-peer cor list ld
Router(config-dp-corlist)#member 911
Router(config-dp-corlist)#member local
Router(config-dp-corlist)#member ld

Router(config)#dial-peer cor list intl
Router(config-dp-corlist)#member 911
Router(config-dp-corlist)#member local
Router(config-dp-corlist)#member ld
Router(config-dp-corlist)#member intl

Step 4: Assign Outbound COR Lists to PSTN Dial Peers

* Dial peer 911 has the outgoing 911call COR list
* Dial peer 9911 has the outgoing 911call COR list.
* Dial peer 9 has the outgoing localcall COR list.
* Dial peer 91 has the outgoing ldcall COR list.
* Dial peer 9011 has the outgoing intlcall COR list.

Router(config)#dial-peer voice 911 pots
Router(config-dial-peer)#destination-pattern 911
Router(config-dial-peer)#forward-digits all
Router(config-dial-peer)#corlist outgoing 911call
Router(config-dial-peer)#port 0/0/0:23

Router(config)#dial-peer voice 9911 pots
Router(config-dial-peer)#destination-pattern 9911
Router(config-dial-peer)#forward-digits 3
Router(config-dial-peer)#corlist outgoing 911call
Router(config-dial-peer)#port 0/0/0:23

Router(config)#dial-peer voice 9 pots
Router(config-dial-peer)#destination-pattern 9[2-9]
Router(config-dial-peer)#corlist outgoing localcall
Router(config-dial-peer)#port 0/0/0:23

Router(config)#dial-peer voice 91 pots
Router(config-dial-peer)#destination-pattern 91[2-9]..[2-9]
Router(config-dial-peer)#prefix 1
Router(config-dial-peer)#corlist outgoing ldcall
Router(config-dial-peer)#port 0/0/0:23

Router(config)#dial-peer voice 9011 pots
Router(config-dial-peer)#destination-pattern 9011T
Router(config-dial-peer)#prefix 011
Router(config-dial-peer)#corlist outgoing intlcall
Router(config-dial-peer)#port 0/0/0:23

Reference: CVoice Student Guide v6.0 (Page 4-165)