Dahua nvr4208-8p User Manual

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packet, multiple-cast is the best option to reduce the broad width and the CPU load. The source host
can just send out one data to transit. This function also depends on the relationship of the group member
and group of the outer.
Figure 5-40
5.8.2.13 Auto Register
The auto register interface is shown as below. See Figure 5-41.
This function allows the device to auto register to the proxy you specified. In this way, you can use the
client-end to access the NVR and etc via the proxy. Here the proxy has a switch function. In the network
service, device supports the server address of IPv4 or domain.
Please follow the steps listed below to use this function.
Please set proxy server address, port, and sub-device name at the device-end. Please enable the auto
register function, the device can auto register to the proxy server.
Figure 5-41
5.8.2.14 Alarm Centre
The alarm center interface is shown as below. See Figure 5-42.
This interface is reserved for you to develop. System can upload alarm signal to the alarm center when
local alarm occurs.
Before you use alarm center, please set server IP, port and etc. When an alarm occurs, system can send
out data as the protocol defined, so the client-end can get the data.

Dahua nvr4208-8p Specifications

General

Operating System	Embedded LINUX
IP Camera Input	8 channel
Two-way Talk	1 channel Input, 1 channel Output, RCA
Interface	1 HDMI, 1 VGA
OSD	Camera title, Time, Video loss, Camera lock, Motion detection, Recording
Record Interval	1 ~ 120 min (default: 60 min), Pre-record: 1 ~ 30 sec, Post-record: 10 ~ 300 sec
Ethernet	1 RJ-45 Port (10/100/1000Mbps)
Max. User Access	128 users
Smart Phone	iPhone, iPad, Android
HDD Bays	1
Operating Temperature	-10°C ~ +55°C (+14°F ~ +131°F)
Main Processor	Dual-core embedded processor
Multi-screen Display	1/4/9
Video Detection and Alarm	Motion Detection, MD Zones: 396 (22 x 18), Video Loss, Camera Blank
Alarm input	4
Relay Output	2
Compression	H.265, H.264
Recording Resolution	Up to 8MP
Record Mode	Manual, Schedule (Regular, Continuous), MD (Video detection: Motion Detection, Camera Blank, Video Loss)
PoE	8 ports (IEEE802.3af/at)
Protocols	HTTP, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE, DDNS, FTP, Alarm Server, IP Search (Support Dahua IP camera, DVR, NVS, etc.)
USB Interface	2 USB2.0
Power Supply	AC 100~240V, 50/60 Hz
Power Consumption	NVR: <10W (without HDD), PoE: Max 25.5W for single port, 130W total
Operating Humidity	10%~90% RH