Digimerge DGRT400 Manual De Usuario

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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.