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Static IP address — An IP address specifically (instead of dynamically [see "DHCP"])
assigned to a device or system in a network configuration. This type of address requires
manual configuration of the network device or system and can only be changed manually or
by enabling DHCP.
Stop bits — The bit or bits transmitted that signal the end of a character. Typically set to 1.
Streaming Media Player (SMP) web browser plugin — The Extron SMP web browser
plugin (V1.0) provides the best streaming features to display SME 100 streams.
Streaming media (stream) — Multimedia that is constantly received by (and normally
presented to) an end-user while being delivered by a streaming provider. Internet television is
a commonly streamed medium.
Switch — A network switch enables communication between devices in a network by
routing data between ports at the data link layer (layer 2 of the OSI model). A managed
switch can be configured to transmit data only to the specific device for which the data was
meant.
Telnet port — Most controllers support Telnet and use port 23 as the communication port
to receive or issue commands.
Time To Live (TTL) — A value that specifies the number of router hops multicast traffic can
make between routed domains when it exits a source.
Transmission Control Protocol (TCP) — A protocol developed for the Internet that
provides reliable end-to-end data packet delivery from one network device to another.
Transmission Control Protocol/Internet Protocol (TCP/IP) — The communication
protocol of the Internet. Computers and devices with direct access to the Internet are
provided with a copy of the TCP/IP program to allow them to send and receive information
in an understandable form.
Transport Streams (TS) — A form of media wrapped in MPEG-2 transport stream
headers. The MPEG-2 transport headers contain information about the media.
The SMD101 is compatible with transport streams that contain H.264 encoded video and
AAC encoded audio. Transport streams containing MPEG-2 video and AC3 audio are not
supported.
• TS/UDP — (Unicast or multicast) An MPEG-2 transport stream containing the
elementary streams for the audio and video. It is sent using UDP packets.
• TS/RTP — (Unicast or multicast) Transport stream that is sent using RTP/UDP. RTP
provides sequencing information; if the sequencing information is reordered by the
network, RTP reorganizes and processes the information in the correct order. UDP
would process the sequencing information out of order, making RTP performance better
on larger, many hop networks.
TMDS — Transition Minimized Differential Signaling. An all-digital video transmission
standard developed by Silicon Image, Inc. TMDS is the core technology used in DVI and
HDMI.
Unicast — Sending messages from one device to a single network destination on a
network. Having N clients of a unicast stream requires the server to produce N streams of
unicast data.
User Datagram Protocol (UDP) — A connectionless, transport layer protocol that sends
packets (datagrams) across networks using "best-effort" delivery. It is a relatively simple
protocol that does not include handshaking.
Variable Bit Rate (VBR) — A compression scheme that adjusts the output bit rate around
a specified target bit rate depending on the audio or image complexity. More bandwidth is
used when the video frame is more complex and less bandwidth is used when the video
frame is simple.
SMD101 • Reference Information 98