The NV-EC1701U transceivers provide transparent end-to-end
10-baseT or 100-BaseT connectivity with auto detection and
autocrossover. This means that IP cameras or other devices may
be installed at one end, and their data is transparently delivered
to the other end. Please read configuration instructions on page
3 before installing.
Wire distances up to 1,500ft (450m) are supported, although
local power may be required for extended distances. See pages
6 & 7.
The NV-EC1701U supports TCP/IP, UDP, HTTP, Multi-cast, and
other standard protocols. This allows for the transmission of other
network traffic besides streaming video.
For IP-based CCTV applications, there are some network config-
urations that are robust, and others that are not recommended.
In general, it is best to deploy a separate LAN exclusively for
video traffic.
Although it is possible to place IP cameras onto the end-user’s
“Enterprise LAN”, there are several disadvantages in doing so.
These include:
Traffic Management Considerations
When sharing the resources of a LAN, the nature of the traffic
must be well understood for it to operate efficiently. For most
end-users, the business use of their LAN is constantly changing,
critical for their day-to-day operations, and not managed by the
same group that manages their security. IP video can often con-
sume large amounts of bandwidth, which may or may not be
compatible with existing IT traffic.
Security Considerations
Most surveillance systems are installed specifically to protect
against breaches in security. A shared LAN provides potential
opportunities for unauthorized access to security assets. Sniffing
IP addresses can result in the unintended disclosure of IP cam-
eras or network vulnerabilities. Spoofing IP addresses could
result in the disruption of recording.
If you must pass IP camera video through “public” LANs,
ensure that video is recorded prior to leaving the secure
LAN. Then encrypt it by using a Virtual Private Network
(VPN) so that neither the video, nor its addressing is read-
able on the LAN. Many low-cost routers support VPNs.
LAN / WAN
Ethernet
Switch
IP Camera
6 Watt PoE
Cat5
≤328ft
(≤100m)
IP Camera
Cat5
≤328ft
(≤100m)
Cat5
≤328ft
(≤100m)
Figure 2 - IP Camera & NVR Installation
Network
Video
Recorder
Firewall
NV-EC1701U
NV-EC1701U
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Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
48VDC Power Supply
Cat5
≤328ft
(≤100m)
≤1,000ft (300m) Shielded 18/2
≤1,500ft (450m) 18/2 UTP or 4-pair Cat5
See Wire Distance Charts on page 7
or IP Distance Calculator available at www.nvt.com
TRANSCEIVER-TO-TRANSCEIVER
NETWORK ARCHITECTURE
IP CAMERA & NVR CONSIDERATIONS
Page 5 of 12
