Network Technologies DVB-ASI to IP, ASI-IP-GTW user manual

ASI-IP-GTW User's Manual

SDP: Session Description Protocol. A protocol to signal multicasts in a network. SDP is used as a mechanism to describe an ongoing multicast; for example the type of compression used, IP addresses 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.

SDTV: Standard Definition Television. The normal television standard/resolution in use today.

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 signalling over IP networks, i.e. connection setup and tear-down. SIP makes it possible to "dial" a remote receiver of data and set up the connection in this way.

SNMP: Simple Network Management Protocol. A fundamental and simple protocol for management of network elements. Very common in use today by most Network Management Systems and other applications.

SNTP: Simple Network Time Protocol is an Internet protocol used to synchronize the clocks of computers to some time reference. It is a simplified version of the protocol NTP protocol which is too complicated for many systems.

SPTS: Single Program Transport Streams. A Transport Stream that contains a single program/ service.

TCP: Transmission Control Protocol. A protocol above the IP layer that provides automatic retransmission of datagrams in case of packet loss, making it very robust and tolerant against network errors. TCP is the fundamental protocol used in the Internet for WEB traffic (HTTP protocol). TCP is indented for point-to-point protocol; you cannot use TCP for communication from one node to many others.

TCP/IP: A common term used for the Internet protocol suite, i.e. the set

of protocols needed to get fundamental IP network access: TCP, IP, UDP, ARP etc.

ToS: Type of Service. This is a field in the header of IP datagrams to provide various service types. It has now been "taken over" and reused by DiffServ.

Transport Streams: The common name for MPEG2 Transport Streams. A bit stream used to carry packets with MPEG-2 compressed video. A transport stream typically carries approximately 10 compressed TV channels, but can consist of an arbitrary number of TV and Radio services.

UDP: User Datagram Protocol. A protocol above the IP layer that provides port multiplexing in addition. In essence, you can transmit IP data packets to several receiving processes in the same unit/device.

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