Axis Communications 232d+ user manual Axis 231D+/232D+ Glossary of Terms

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AXIS 231D+/232D+ - Glossary of Terms 65

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.

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 IMAP. These other protocols allow the user to save messages in a server mailbox and download them periodically from the server.

SMTP authentication is an extension of SMTP, whereby the client is required to log into the mail server before or during the sending of email. It can be used to allow legitimate users to send email while denying the service to unauthorized

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Contents Axis 231D+/232D+ Network Dome Camera User’s Manual Intellectual Property Rights About This DocumentTable of contents Axis 231D+/232D+ Axis 232D+ Axis 231D+/232D+Hardware Description Accessing the Axis 231D+/232D+ Using the Network Dome CameraAxis 231D+/232D+ Using the Network Dome Camera Pan/Tilt/Zoom Controls Area ZoomPan/Tilt/Zoom Control Queue Motion Jpeg Video StreamsStream Types MPEG-4 protocols and communication methods RTP/RTSP/HTTP or RTP/RTSP/HTTPS How to stream MPEG-4Other MPEG-4 clients Other methods of accessing the video streamAxis Media Control Overview of the Setup Tools Configuring the Network Dome CameraAccessing the Setup Tools Image Settings Video & Image SettingsVideo Stream Overlay SettingsGo to Setup Video & Image Overlay Image Overlay Image SettingsAdvanced Camera Settings MPEG-4 Settings Customizing the default Live View ConfigLayout Upload Own Web FilesCheck Show Custom Link Own HomeUser Defined Links Default Viewer Default Video FormatAction Buttons Output ButtonsUpdate Viewer SettingsHtml Examples External VideoPan Tilt Zoom Controls Sequence ModeFocus and Iris Controls PTZ controlsClick-in-image PTZ Control Queue Preset PositionsUsing CGI links to control PTZ devices Guard Tour Dome ConfigurationPreset Positions Control Queue AdvancedLimits Ctrl PanelEvent Servers Event ConfigurationEvent Types How to set up a triggered eventTriggered Event Click Add triggered on the Event typesPre-trigger and Post-trigger buffers Set the When Activated How to set up a scheduled eventScheduled Event Click Add scheduled on the Event typesMotion detection How to configure Motion DetectionHistory Sensitivity Port StatusSecurity System OptionsUsers IP Address Filtering802.1X Network Admission Control HttpsAxis 231D+/232D+ System Options CA servers Authentication processDate & Time Services Network Basic TCP/IP SettingsIP Address Configuration DNS Configuration Network Advanced TCP/IP SettingsNTP Configuration Host Name ConfigurationWAN internet NAT TraversalNetwork Traffic RtspSmtp email Network QoS Quality of serviceQoS Settings UPnP Network SnmpRTP Multicast/ MPEG-4 Network BonjourSupport MaintenanceSupport Overview System OverviewAbout Resetting to Factory Default SettingsConfiguration Using the Control Button Connection Module Pinout Connection ModuleSchematic Diagram Axis 231D+/232D+ I/O connectors and power Checking the Firmware Updating the Firmware TroubleshootingEmergency Recovery Procedure Using ARP Ping Symptoms, Possible Causes and Remedial ActionsVideo Image Problems Models Technical SpecificationsAlarm and event Video management Optimizing your system General performance considerationsBandwidth Frame rates Motion JpegFrame rates MPEG-4 Axis 231D+/232D+ Technical Specifications Axis 231D+/232D+ Glossary of Terms Glossary of TermsCompression See Image Compression Half-duplex See Full-duplex Axis 231D+/232D+ Glossary of Terms Axis 231D+/232D+ Glossary of Terms URL Uniform Resource Locator An address on the network Axis 231D+/232D+ Glossary of Terms Index Smtp
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232d+ specifications

Axis Communications, a leading provider of IP security solutions, offers a range of high-performance cameras designed for various surveillance applications. Among their products, the Axis 232D+ and Axis 231D+ stand out for their robust features and advanced technologies, making them suitable for both indoor and outdoor environments.

The Axis 232D+ is a high-speed dome camera that delivers exceptional video quality, thanks to its 1/4-inch progressive scan CCD sensor. It offers a resolution of 704x480 pixels and can capture incredibly detailed images at up to 30 frames per second. With its pan/tilt functionality, the 232D+ can cover a wide field of view, allowing for extensive monitoring areas while maintaining high precision and responsiveness.

In addition to its impressive image quality, the Axis 232D+ features advanced digital zoom capabilities, enabling users to zoom into specific areas without significant loss of detail. The camera is equipped with a powerful infrared capability, allowing it to capture images in low-light conditions effectively. This makes it an ideal choice for 24/7 surveillance in all lighting scenarios.

On the other hand, the Axis 231D+ offers similar high-quality video performance but introduces some distinctive features. It also utilizes a 1/4-inch progressive scan CCD sensor and supports a wide dynamic range (WDR) for improved image quality in challenging lighting conditions. The 231D+ is designed for easy installation and integration into existing systems, making it a versatile option for various surveillance needs.

Both models leverage Axis' digital PTZ technology, providing users with the flexibility to pan, tilt, and zoom remotely via an intuitive web interface. This user-friendly aspect simplifies monitoring and allows quicker responses to incidents when they arise.

Furthermore, both the Axis 232D+ and 231D+ support Power over Ethernet (PoE), eliminating the need for separate power cables and simplifying installation, especially in hard-to-reach locations.

In conclusion, the Axis 232D+ and 231D+ represent Axis Communications’ commitment to delivering high-quality, versatile surveillance solutions that meet the demands of modern security challenges. Their advanced imaging technologies, robust features, and user-friendly design make them noteworthy additions to any security setup. Whether it's for large outdoor areas or indoor environments requiring vigilant monitoring, these cameras provide the performance and reliability critical for comprehensive security.