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GENERAL INFORMATION
Digimerge Dialup Video Server User’s Guide
5
1. GENERAL INFORMATION
1.1 Introduction
Thank you for purchasing Digimerge product. The Dialup Video Server (DVS) will enable you
to monitor sensitive locations and remote areas over standard phone lines. A key feature of
DVS is the ability to not only visually survey a sensitive location, but to also hear what is
occurring at the scene as well as speak to anyone at the monitored location. A standalone DVS
unit installed on-site with video and audio feed from up to four cameras and connected to a
phone line lets you see and hear exactly what is happening and verbally interact with the
individuals at the sight.
No special hardware is required at the operator's PC, just a modem. Images are transmitted by
the remote DVS unit will be decoded by a special client software and displayed on the screen or
stored onto a hard disk for later examination. The operator, who can be located several
thousand miles away, is in complete control of the DVS and any cameras attached to it. This
allows for incredible expandability and flexibility of the security and surveillance network.
Important features of DVS-based surveillance system include:
• DVS is low cost, maintenance-free standalone unit.
• High quality Wavelet-compressed video from 4 sources and one channel full duplex
audio can be transmitted simultaneously between DVS and supervisor’s PC through an
ordinary phone line (POT line) using internal PSTN modem at a bit rate up to 56Kbps.
• Optional connection types supported: External PSTN modem, ISDN modem, cellular
services (GSM, CDMA modem), dedicated line modems and direct cable connections.
• DVS unit and PC client software are specifically designed for extremely low speed
connections, giving the user surveillance capability approaching real-time. Maximum
achievable video update rate for one camera source with a 28.8 kbps modem connection
at a resolution of 170x120 is 5 frames per second.
• Snapshots – high quality/resolution images can be captured into internal DVS memory
at operator’s request, while monitoring an area with low quality/resolution but high frame
rate.
• Audio user interface provides full control in audio streaming mode.
• Non-volatile internal video memory plus CompactFlash (removable) are used as video
storage.
• Callback mode: DVS unit can be instructed to call a PC back and notify you about
suspicious activity in the monitored area or alarm events on sensor’s inputs, and show
high quality captured snapshots sequence (user defined) on the screen which can be
automatically saved as a JPG or AVI file without any user interaction.
• Motion Detection is provided with adjustable sensitivity levels and camera
participation in a motion monitoring cycle for every camera.
• Password protection is available to prevent unauthorized access.
• Internal timer for pictures time stamp.