Ericsson SVP 2000, Reference Manual, Page: 171 / 196

Glossary
RTP Real-time Transfer Protocol. A protocol designed for transmission of
real-time data like video and audio over IP networks. RTP is used
for most video over IP transmissions.
RLC Run Length Coding: Minimization of the length of a bit-stream by
replacing repeated characters with an instruction of the form ‘repeat
character x y times’.
SBR Spectral Band Replication.
SCPC Single Channel Per Carrier.
Spectral
Scrambling A process (in digital transmission) used to combine a digital signal
with a pseudo-random sequence, producing a randomized digital
signal that conveys the original information in a form optimized for a
broadcast channel.
Scrambling Alteration of the characteristics of a television signal in order to
prevent unauthorized reception of the information in clear form.
SDI Serial Digital Interface.
SDT Service Description Table: Provides information in the SI stream
about the services in the system; for example, the name of the
service, the service provider, etc.
SDTI Serial Data Transport Interface. A mechanism that allows
transmission of various types of data over an SDI signal. This may
be one or more compressed video signals or other proprietary data
types. The advantage of SDTI is that existing SDI transmission
infrastructure can be used to transport other types of data.
SELV
Safety Extra Low Voltage (EN 60950).
SFP Small Form-factor Pluggable module. A standardized mechanism to
allow usage of various optical interfaces for Gigabit Ethernet.
Several types of SFP modules exist: Single-mode fiber modules for
long-distance transmission and multi-mode fiber modules for shorter
distances. SFP is also known as "mini-GBIC".
SIP Session Initiation Protocol. A common acronym for the ongoing
effort to standardize signaling over IP networks, i.e. connection
set-up and tear-down. SIP makes it possible to "dial" a remote
receiver of data and set-up the connection in this way.
STB Set-Top Box: A box that sits on top of a television set and is the
interface between the home television and the cable TV company.
New technologies evolving for set-top boxes are video-on-demand,
video games, educational services, database searches, and home
shopping. The cable equivalent of the IRD.
EN/LZT 790 0046/1 R1A A-17