User's Manual

LAN/WAN
Ethernet
Switch
IP Camera
6 Watt PoE
Cat5
≤328ft
(≤100m)
NVR CONSIDERATIONS
NETWORK ARCHITECTURE
NV-EC1701 NV-EC1701
Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
48VDC Power Supply
IP Camera
≤1,800 ft (550 m)
RG-59/U 20 AWG
Cat5
≤328ft
(≤100m)
Cat5
≤328ft
(≤100m)
Figure 3 - NVR Installation
Network
Video
Recorder
TRANSCEIVER-TO-TRANSCEIVER
The NV-EC1701 transceivers provide transparent end-to-end 10-baseT
or 100-BaseT connectivity with auto detection and auto-crossover. 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.
Long coax distances up to 2,500 ft (750 m) are supported, although
local power may be required for extended distances. See “High Power
Extended Distance Considerations” on page 7.
The NV-EC1701 supports all standard protocols, such as TCP/IP, UDP,
HTTP, etc. This allows for the transmission of other network traffic
besides streaming video.
Although it is possible to place IP cameras onto the end-user’s “Enter-
prise 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 consume 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 cameras 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 readable on the LAN. Many low-cost routers
support VPNs.
The NV-EC1701 is network transparent, and operates in virtually every
network environment.
For IP-based CCTV applications, there are some network configurations
that are robust, and others that are not recommended. In general, it is
best to deploy a separate LAN exclusively for video traffic.
Firewall
Page 6 of 17
Cat5
≤328ft
(≤100m)