Online Access Free 642-457 Exam Questions

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

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

Refer to the exhibit.

Assuming the regions configuration to BR only permits G.729 codec, how many calls are allowed for the BR location?

• A.Total of two calls in either direction.
• B.Total of four calls to the BR location. Outgoing calls are not impacted by the location configuration.
• C.Two outgoing calls. Incoming calls are unlimited.
• D.Total of four calls in either direction.
• E.Total of four calls; two incoming and two outgoing.

What command is used to map internal extensions to the corresponding E.164 PSTN number when using Cisco Unified Communications Manager Express in SRST mode?

• A.ephone-transnumber
• B.number-e.164
• C.dialplan-pattern
• D.number
• E.ephone-dn

Which solution is needed to enable presence and extension mobility to branch office phones during a WAN failure?

• A.Cisco Unified Communications Manager Express in SRST mode
• B.SRST with VoIP dial peers to Cisco Unified Communications Manager Express
• C.SRST without MGCP fallback
• D.SRST with MGCP fallback

Refer to the exhibit

The exhibit shows a SAF Forwarder configuration attached to a Cisco Unified Communications Manager.
Which minimum configuration for a Cisco Unified Communications Manager Express SAF Forwarder is needed to establish a SAF neighbor relationship with this SAF Forwarder?

• A.router eigrp SAF
  service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family voice service saf profile trunkroute 1 session protocol sip interface Loopback1 transport tcp port 5060 !
• B.router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family !
• C.router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit- service-family ! voice service saf profile trunk-route 1 session protocol sip interface Loopback1 transport tcp port 5060 ! profile dn-block 1 alias-prefix 1972555 pattern 1 type extension 4xxx ! profile callcontrol 1 dn-service trunk-route 1 dn-block 1 dn-block 2 ! channel 1 vrouter SAF asystem 1 subscribe callcontrol wildcarded publish callcontrol 1 !
• D.None of above configurations contain sufficient information.