Refer to the exhibit. You have received a trouble ticket that users cannot place calls to the PSTN. During testing you discover the gateway is not switching to the secondary call agent when the primary call agent is unreachable.

What needs to be done to allow the MGCP gateway to use a different call agent if the primary fails?

Which method can be used to correct database replication issues in a cluster running Cisco Unified CallManager 5.0?

You have placed all DNs in the Phones partition. During testing you discover that you cannot place calls between IP phones, but you can place calls to the PSTN and voice mail. What is one possible cause of this issue?

Your company has a centralized IP Telephony system and branch offices in eight major cities. The manager of your company help desk recently published local access numbers for external customers to reduce the costs associated with your company’s toll-free 800 service. However, when customers call the new local numbers they hear a reorder tone instead of your centralized IVR.What is the best solution to this issue?

You have received a trouble ticket stating that an executive with an account at a bank cannot retrieve account information by phone.When the executive calls the bank, the call is answered and the executive is prompted to enter the account code. However, the bank does not seem to recognize the DTMF tones and disconnects the call.What is a possible solution to this problem?

How does the echo canceller interpret a signal when the ERL value is too low?

You have received a trouble ticket stating that the MWI light is not coming on for a group of users. Further investigation reveals that the affected users are connected to the same subscriber in the cluster. Users that are connected to other subscribers in the same cluster are not experiencing this issue.What is causing this problem?

You have two Cisco Unified CallManager clusters each using endpoint authentication. You have moved a small group of users from Cluster 1 to Cluster 2 and now their phones are failing to register with Cluster 2.Each phone displays the error message “failure to authenticate on the CTL file”.Which step should be taken to resolve this issue?

You are in charge of Troubleshooting Cisco Unified Communications in compny. What happens if CDP is not enabled on a switch port to which an IP phone is connected?

Your Cisco Unified CallManager 5.0 cluster has just started to use a third-party LDAP service.Users complain that they are unable to make changes to their passwords in their Cisco Unified CallManager user web pages. How should you resolve this problem?