Study tips 642-457

Which action allows branch Cisco IP phones to function with voice mail while using only the G.729 codec over the WAN link to headquarters?

Which two statements about the functionality of a gatekeeper are true?

Which option describes a function of SIP preconditions?

Which statement about AAR functionality is true?

Which statement about RSVP is true?

Which system configuration is used to set a restriction on audio bandwidth?

Which two could be the problem?

What happens if location-based CAC is used and there is no bandwidth available when a remote caller is placed on hold?

which Cisco Unified Communications Manager configuration parameter does the CODEC that a Cisco IP Phone uses for a call depend?

what is the best CAC method recommended for this type of deployment?