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Glossary
RT
Real Time. Real Time service is designed to meet the needs of
Real Time Variable Bit Rate (RT-VBR) like services characterized
by requirements for guaranteed rate and delay such as streaming
video or audio. These services are dynamic in nature, but offer
periodic dedicated requests opportunities to meet real-time
requirements. Because the subscriber equipment issues explicit
requests, the protocol overhead and latency is increased, but
capacity is granted only according to the real needs of the
connection. Service parameters include CIR and CT.
RTCP
RTP Control Protocol. A protocol that monitors the QoS of an RTP
connection and conveys information about the on-going session.
RTP
Real Time Protocol. An Internet protocol for transmitting real-
time data such as audio and video. RTP itself does not guarantee
real-time delivery of data, but it does provide mechanisms for the
sending and receiving applications to support streaming data.
Typically, RTP runs on top of the UDP protocol, although the
specification is general enough to support other transport
protocols.
Rx
Receive
SIP
Session Initiation Protocol. An application-layer control IETF
protocol that can establish, modify, and terminate multimedia
sessions such as Internet telephony calls (VoIP). SIP can also
invite participants to already existing sessions, such as multicast
conferences. Media can be added to (and removed from) an
existing session. SIP transparently supports name mapping and
redirection services, which supports personal mobility - users
can maintain a single externally visible identifier regardless of
their network location.
SLA
Service Level Agreement. A contract between a service provider
and the end user, which stipulates and commits the service
provider to a required level of service. An SLA relates to issues
such as specified level of service, support options, enforcement or
penalty provisions for services not provided, a guaranteed level of
system performance as relates to downtime or uptime, a specified
level of customer support and what software or hardware will be
provided and for what fee.
SME
Small and Medium-sized Enterprises. SMEs are small-scale
entrepreneurial private enterprises: they are usually defined as
having less than 250 employees, but most have far fewer.
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BreezeMAX System Manual
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