Exam 25: Internet Multimedia Support

SIP incorporates the use of a _________ ,which defines session content using a set of types similar to those used in MIME.

The heart of the call placement process for VoIP is the __________ .

Real-time applications are more concerned with timing issues.

The Payload Type field identifies the media type of the payload and the format of the data,including the use of compression or encryption.

The ________ is a simple device that produces one or more outgoing RTP packets for each incoming RTP packet.

VoIP readily integrates with other services,such as combining Web access with telephone features through a single PC or terminal.

_______ works by encoding voice information into a digital format,which can be carried across IP networks in discrete packets.

________ is the determination of the willingness of the called party to engage in communications.

RFC 3550 outlines ________ as a function performed by RTCP.

The __________ protocol is used only for the transmission of user data,typically in multicast fashion among all participants in a session.

An application-level firewall may prevent the forwarding of RTP packets.

RTCP receivers provide reception quality feedback using a Sender Report or a ________ Report.

A _________ is an RTP relay that receives streams of RTPpackets from one or more sources,combines these streams,and forwards a new RTP packet stream to one or more destinations.

________ is the maximum variation in delay experienced by packets in a single session.

The __________,defined in RFC 3261,is an application level control protocol for setting up,modifying,and terminating real-time sessions between participants over an IP data network.

VoIP is the transmission of speech across IP-based network.

The jitter measure may provide a warning of increasing congestion before it leads to packet loss.

The ___________ Protocol describes the content of sessions,including telephony,Internet radio,and multimedia applications.

The term _______ refers to software operating on a PC that implements VoIP.

A _________ is any network element that sends SIP requests and receives SIP responses.