Online Access Free 642-457 Exam Questions

Refer to the exhibit. When a user presses a speed dial to +442079460255 when the SAF network is down, which event should occur?

• A.The call will fail because the ToDID is 0:.
• B.The call will reroute via the PSTN with the constructed PSTN number as +442079460255.
• C.The call will reroute via the PSTN with the constructed PSTN number as 442079460255.
• D.The call will fail because the called number will be 2079460255.
• E.The call will reroute via the PSTN with the constructed PSTN number as 00442079460255.

Which option configures call preservation for H.323-based SRST mode?

• A.call preservation not possible with H.323
• B.call-manager-fallback preserve-call
• C.dial-peer voice 1 voip call preserve
• D.voice service voip h323 call preserve

Which Cisco IOS command is used for internal SAF Clients to check SAF learned routes?

• A.show voice saf detail
• B.show eigrp address-family ipv4 saf
• C.show voice saf routes
• D.show eigrp service-family ipv4 saf
• E.show voice saf dndb all

Assume that local route groups are configured. When an IP phone moves from one device mobility group to another, which two configuration components are not changed? (Choose two.)

• A.phone button settings
• B.region
• C.IP subnet
• D.user settings
• E.SRST reference

Video calls using 384 kbps need to be supported across a gatekeeper-controlled trunk. What value should be entered into the gatekeeper to support this bandwidth? (SourcE. Configuring Cisco Unified Video Advantage)

• A.384 kbps
• B.768 kbps
• C.192 kbps
• D.512 kbps