Axis Communications AXIS Q1755-E user manual Axis Q1755/-E Glossary of Terms

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prompt or the command line in UNIX.

Pixel - A pixel is one of the many tiny dots that make up a digital image. The color and intensity of each pixel represents a tiny area of the complete image.

PoE (Power over Ethernet) - Power over Ethernet provides power to a network device via the same cable as used for the network connection. This is very useful for IP-Surveillance and remote monitoring applications in places where it may be too impractical or expensive to power the device from a power outlet.

PPP(Point-to-Point Protocol) - A protocol that uses a serial interface for communication between two network devices. For example, a PC connected by a phone line to a server.

PPTP (Point-to-Point Tunneling Protocol) - A protocol (set of communication rules) that allows corporations to extend their own corporate network through private "tunnels" over the public Internet. In this way a corporation can effectively use a WAN (Wide Area Network) as a large single LAN (Local Area Network). This kind of interconnection is known as a virtual private network (VPN).

Pre/post alarm images - The images from immediately before and after an alarm. These images are stored in a buffer for later retrieval.

Progressive scan - Progressive scan, as opposed to interlaced video, scans the entire picture, line by line every sixteenth of a second. In other words, captured images are not split into separate fields as in interlaced scanning.

Computer monitors do not need interlace to show the picture on the screen, but instead show them progressively, on one line at a time in perfect order, i.e. 1, 2, 3, 4, 5, 6, 7 etc., so there is virtually no ‘flickering’ effect. In a surveillance application, this can be critical when viewing detail within a moving image, such as a person running. A high-quality monitor is required to get the best from progressive scan. See also Interlacing.

Protocol - A special set of rules governing how two entities will communicate. Protocols are found at many levels of communication, and there are hardware protocols and software protocols.

Proxy server - In an organization that uses the Internet, a proxy server acts as an intermediary between a workstation user and the Internet. This provides security, administrative control, and a caching service. Any proxy server associated with a gateway server, or part of a gateway server, effectively separates the organization’s network from the outside network and the local firewall. It is the firewall server that protects the network against outside intrusion.

A proxy server receives requests for Internet services (such as web page requests) from many users. If the proxy server is also a cache server, it looks in its local cache of previously downloaded web pages. If it finds the page, it is returned to the user without forwarding the request to the Internet. If the page is not in the cache, the proxy server, acting as a client on behalf of the user, uses one of its own IP addresses to request the page from another server over the Internet. When the requested page is returned, the proxy server forwards it to the user that originally requested it.

AXIS Q1755/-E - Glossary of Terms

P-VOP - See VOP.

Resolution - Image resolution is a measure of how much detail a digital image can hold: the greater the resolution, the greater the level of 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) in the image can be used. In analog systems it is also common to use other format designations, such as CIF, QCIF, 4CIF, etc.

RTCP (Real-Time Control Protocol) - RTCP provides support for real-time conferencing of groups of any size within an intranet. This support includes source identification and support for gateways like audio and video bridges as well as multicast-to-unicast translators.

RTCP offers quality-of-service feedback from receivers to the multicast group as well as support for the synchronization of different media streams.

RTP (Real-Time Transport Protocol) - RTP is an Internet protocol for the transport of real-time data, e.g. audio and video. It can be used for media-on-demand as well as interactive services such as Internet telephony.

RTSP (Real Time Streaming Protocol) - RTSP is a control protocol, and a starting point for negotiating transports such as RTP, multicast and Unicast, and for negotiating codecs.

RTSP can be considered a ‘remote control’ for controlling the media stream delivered by a media server. RTSP servers typically use RTP as the protocol for the actual transport of audio/video data.

Router - A device that determines the next network point to which a packet should be forwarded on its way to its final destination. A router creates and/or maintains a special routing table that stores information on how best to reach certain destinations. A router is sometimes included as part of a network switch. See also switch.

Server - In general, a server is a computer program that provides services to other computer programs in the same or other computers. A computer running a server program is also frequently referred to as a server. In practice, the server may contain any number of server and client programs. A web server is the computer program that supplies the requested HTML pages or files to the client (browser).

Sharpness - This is the control of fine detail within a picture. This feature was originally introduced into color TV sets that used notch filter decoders. This filter took away all high frequency detail in the black and white region of the picture. The sharpness control attempted to put some of that detail back in the picture. Sharpness controls are mostly superfluous in today's high-end TVs. The only logical requirement for it nowadays is on a VHS machine.

Simplex - In Simplex operation, a network cable or communications channel can only send information in one direction.

SMTP (Simple Mail Transfer Protocol) - SMTP is used for sending and receiving e-mail. However, as it is ‘simple,’ it is limited in its ability to queue messages at the receiving end, and is usually used with one of two other protocols, POP3 or

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Contents USER’S Manual Axis Q1755/-E User’s Manual Axis Q1755/-E Table of contents Contents Product Description Key featuresAxis Q1755/-E Product Description Rear view Bottom view OverviewAxis Q1755-E Alarm output connected at deliveryAccess from a browser Accessing the CameraAxis Q1755/-E Accessing the Camera Access from the internet Setting the root passwordClick the Create self-signed certificate button Axis Media Control toolbar Setup Events GatekeeperLive View General controlsAMC Audio controls Half-duplex modeVideo Streams How to stream H.264Axis Q1755/-E Video Streams Unicast via Rtsp axrtsp//ip/axis-media/media.amp Alternative methods of accessing the video streamMotion Jpeg Axis Q1755/-E Video Streams Axis Media Control AMCAxis Q1755/-E Basic Setup Basic SetupVideo Stream Video & AudioBit Rate Control Axis Q1755/-E Video & Audio Text Overlay Settings264 GOV Settings AudioWhite balance Camera SettingsExposure Settings Stream ProfilesOverlay Image Focus and zoomPrivacy mask Audio Input Audio SettingsAudio mode The available audio modes are Audio ChannelsAxis Q1755/-E Video & Audio Audio Output Layout Live View ConfigAxis Q1755/-E Live View Config Default ViewerOther browsers Viewer SettingsAction Buttons User Defined LinksAxis Q1755/-E Live View Config Output Buttons Device Preset PositionsPTZ Pan Tilt Zoom Advanced Pan/TiltControls Control Queue SettingsPanel Shortcut Command Buttons Enable/Disable controlsAxis Q1755/-E Events EventsEvent Servers Event TypesSave stream How to set up a triggered eventFollowing example describes how to set up a triggered event Axis Q1755/-E Events Triggered EventCamera tampering How to set up a scheduled eventSettings GatekeeperGo to Events Motion Detection Set up a motion detection include windowAfter you define these settings, click Save Motion DetectionExamples Port StatusAxis Q1755/-E Recording List Recording ListRemove button is used to delete unlocked recordings Users System OptionsSecurity Axis Q1755/-E System OptionsAxis Q1755/-E System Options Ieee Audio SupportCertificates Date & Time Basic TCP/IP SettingsNetwork Settings IPv4 Address ConfigurationDNS Configuration Advanced TCP/IP SettingsIPv6 Address Configuration ServicesNAT traversal port mapping for IPv4 LAN intranetLink-Local IPv4 Address Http and HttpsAs the Internet. See the online help for more information QoS Quality of ServiceSmtp email Snmp v1/v2Ports & Devices StorageMaintenance LED SettingsSupport File Upload Plain ConfigConfiguration AdvancedAxis Q1755/-E About Resetting to the Factory Default SettingsUsing the Control Button AboutAxis Q1755/-E Unit connectors Unit connectorsLED indicators Checking the Firmware TroubleshootingAxis Q1755/-E Troubleshooting Emergency Recovery ProcedureAxis Q1755/-E Troubleshooting Axis Support Check the Internet firewall with your system administrator Installation GuideGuide or the ARP/Ping commands Router to allow access to the cameraSet to Decode only I frames Nance Volume settings are correctServer. This is enabled under System Options Date & Time Existing files to free up spaceAxis Q1755/-E Technical Specifications Technical SpecificationsIntegration Programming Alarm triggersAlarm events System ApplicationWeight PowerConnectors DimensionsGeneral performance considerations Axis Q1755/-E Glossary of Terms Glossary of TermsHalf-duplex See Full-duplex Etrax Ethernet Token Ring Axis Axis own microprocessorVOP See VOP MAC address Media Access Control address a MACAxis Q1755/-E Glossary of Terms URL Uniform Resource Locator An address on the network More secure the encryption Backup Bit Rate Bonjour Buffer Size Active/Inactive 22 Alarm 28, 41 AMC 7 ARP/Ping 34 AudioAxis Q1755/-E Index Video Stream