Online Access Free 642-457 Exam Questions

To preserve analog calls in an MGCP switchback event, which three commands must be configured in the MGCP fallback router? (Choose three.)

• A.mgcp-graceful
• B.preserve-h323
• C.mgcp-switchback-graceful
• D.h323
• E.voice service voip
• F.no h225 timeout keepalive

Cisco Unified Communications Manager is configured with CAC for a maximum of 10 voice calls.
Which action routes the 11th call through the PSTN?

• A.Configure an SIP trunk to the ISR.
• B.Configure Cisco Unified Communications Manager locations.
• C.Configure Cisco Unified Communications Manager RSVP-enabled locations.
• D.Configure Cisco Unified Communications Manager AAR.

How is the region assigned to a device such as an IP phone?

• A.Regions can be assigned only through a device pool.
• B.Regions can be assigned either directly on the device configuration page or through the device pool. If both configurations exist, the device pool region configuration takes precedence.
• C.Regions can be assigned either directly on the device configuration page or through the device pool. If both configurations exist, the device region configuration takes precedence.
• D.Regions are assigned directly in the device configuration page.

Which option describes the reason that transcoding resources are added in Cisco Unified Communications Manager?

• A.to enable transcoding resources in a Cisco Unified Communications Manager server
• B.to provide transcoding resources in Cisco IOS gateways to Cisco Unified Communications Manager
• C.to enable transcoding resources in Cisco IP Phones
• D.to enable Cisco Unified Communications Manager to select the optimal single codec for end-to-end calls

Which statement best describes globalized call routing in Cisco Unified Communications Manager?

• A.Call routing is based on numbers represented as an E.164 with the + prefix format.
• B.The CSS of all phones contain partitions assigned to route patterns that are in global format.
• C.All incoming calling numbers on the phones are displayed as an E.164 with the + prefix.
• D.All called numbers sent out to the PSTN are in E.164 with the + prefix format.
• E.All phone directory numbers are configured as an 164 with the + prefix.