Axis 214 PTZ User Manual

Also see for AXIS 214 PTZ: Specifications Product guide User manual Operating instructions Installation guide

50AXIS 214 PTZthe user that originally requested it.P-VOP - See VOP.Resolution - Image resolution is a measure of how much detail adigital image can hold: the greater the resolution, the greater the levelof detail. Resolution can be specified as the number of pixel-columns(width) by the number of pixel-rows (height), e.g. 320x240.Alternatively, the total number of pixels (usually in megapixels) inthe image can be used. In analog systems it is also common to useother format designations, such as CIF, QCIF, 4CIF.RTCP (Real-Time Control Protocol) - RTCP provides support forreal-time conferencing of groups of any size within an intranet. Thissupport includes source identification and support for gateways likeaudio and video bridges as well as multicast-to-unicast translators.RTCP offers quality-of-service feedback from receivers to themulticast group as well as support for the synchronization ofdifferent media streams.RTP (Real-Time Transport Protocol) - RTP is an Internet protocol forthe transport of real-time data, e.g. audio and video. It can be usedfor media-on-demand as well as interactive services such as Internettelephony.RTSP (Real Time Streaming Protocol) - RTSP is a control protocol,and a starting point for negotiating transports such as RTP, multicastand Unicast, and for negotiating codecs.RTSP can be considered a "remote control" for controlling the mediastream delivered by a media server. RTSP servers typically use RTP asthe protocol for the actual transport of audio/video data.Router - A device that determines the next network point to which apacket should be forwarded on its way to its final destination. Arouter creates and/or maintains a special routing table that storesinformation on how best to reach certain destinations. A router issometimes included as part of a network switch. See also switch.Server - In general, a server is a computer program that providesservices to other computer programs in the same or other computers.A computer running a server program is also frequently referred to asa server. In practice, the server may contain any number of server andclient programs. A web server is the computer program that suppliesthe requested HTML pages or files to the client (browser).Sharpness - This is the control of fine detail within a picture. Thisfeature was originally introduced into color TV sets that used notchfilter decoders. This filter took away all high frequency detail in theblack and white region of the picture. The sharpness controlattempted to put some of that detail back in the picture. Sharpnesscontrols are mostly superfluous in today's high-end TVs. The onlylogical requirement for it nowadays is on a VHS machine.Simplex - In simplex operation, a network cable or communicationschannel can only send information in one direction.SMTP (Simple Mail Transfer Protocol) - SMTP is used for sendingand receiving e-mail. However, as it is "simple," it is limited in itsability to queue messages at the receiving end, and is usually usedwith one of two other protocols, POP3 or IMAP. These other protocolsallow the user to save messages in a server mailbox and downloadthem periodically from the server.SMTP authentication is an extension of SMTP, whereby the client isrequired to log into the mail server before or during the sending ofemail. It can be used to allow legitimate users to send email whiledenying the service to unauthorized users, such as spammers.SNMP (Simple Network Management Protocol) - SNMP forms partof the Internet Protocol suite, as defined by the IETF (InternetEngineering Task Force). The protocol can support monitoring ofnetwork-attached devices for any conditions that warrantadministrative attention.Sockets - Sockets are a method for communication between a clientprogram and a server program over a network. A socket is defined as"the endpoint in a connection." Sockets are created and used with aset of programming requests or "function calls" sometimes called thesockets application programming interface (API).SSL/TSL (Secure Socket Layer/Transport Layer Security) - Thesetwo protocols (SSL is succeeded by TSL) are cryptographic protocolsthat provide secure communication on a network. SSL is commonlyused over HTTP to form HTTPS, as used e.g. on the Internet forelectronic financial transactions. SSL uses public key certificates toverify the identity of the server.Subnet & subnet mask - A subnet is an identifiably separate part ofan organization's network. Typically, a subnet may represent all themachines at one geographic location, in one building, or on the samelocal area network (LAN). Having an organization's network dividedinto subnets allows it to be connected to the Internet with a singleshared network address.The subnet mask is the part of the IP address that tells a networkrouter how to find the subnet that the data packet should be deliveredto. Using a subnet mask saves the router having to handle the entire32-bit IP address; it simply looks at the bits selected by the mask.Switch - A switch is a network device that connects networksegments together, and which selects a path for sending a unit of datato its next destination. In general, a switch is a simpler and fastermechanism than a router, which requires knowledge about thenetwork and how to determine the route. Some switches include therouter function. See also Router.TCP (Transmission Control Protocol) - TCP is used along with theInternet Protocol (IP) to transmit data as packets between computersover the network. While IP takes care of the actual packet delivery,TCP keeps track of the individual packets that the communication(e.g. requested a web page file) is divided into and, when all packetshave arrived at their destination, it reassembles them to re-form thecomplete file.TCP is a connection-oriented protocol, which means that aconnection is established between the two end-points and ismaintained until the data has been successfully exchanged betweenthe communicating applications.Telnet - Telnet is a simple method with which to access anothernetwork device, e.g. a computer. The HTTP protocol and the FTPprotocols allow you to request specific files from remote computers,but do not allow you logon as a user of that computer. With Telnet,you log on as a regular user with whatever privileges you may havebeen granted for specific applications and data residing on thatcomputer.TVL (TV Lines) - A method of defining resolutions in analog video.UDP (User Datagram Protocol) - UDP is a communications protocolthat offers limited service for exchanging data in a network that usesthe Internet Protocol (IP). UDP is an alternative to the TransmissionControl Protocol (TCP). The advantage of UDP is that it is not requiredto deliver all data and may drop network packets when there is e.g.network congestion. This is suitable for live video, as there is no pointin re-transmitting old information that will not be displayed anyway.Unicast - Communication between a single sender and a singlereceiver over a network. A new connection is established for eachnew user.UPnPTM - A set of computer network protocols that allows theautomatic peer-to-peer detection of devices on the network. UPnP ispromoted by the UPnP Forum.URL (Uniform Resource Locator) - An "address" on the network.USB - (Universal Serial Bus) A plug-and-play interface between acomputer and peripheral devices, e.g. scanners, printers, etc.Varifocal lens - A varifocal lens provides a wide range of focallengths, as opposed to a lens with a fixed focal length, which onlyprovides one.VPN (Virtual Private Network) - This creates a secure "tunnel"between the points within the VPN. Only devices with the correct"key" will be able to work within the VPN. The VPN network can bewithin a company LAN (Local Area Network), but different sites canalso be connected over the Internet in a secure way. One common usefor VPN is for connecting a remote computer to the corporatenetwork, via e.g. a direct phone line or via the Internet.

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