FAQ：Solution to increase surveillance cameras by using PoE Switches

Recently, we have received questions from customers about the need for additional surveillance cameras and the use of EOC:

 

  “hi.thank you for sharing your video and demo.. this is my situation , i have 4 analog cameras outside in my warehouse i used cat6 cable and used each twisted pair of wire to send video ( by bnc valun) to the dvr. and each 4 camera have their own power supply. now, i want to add 1 or 2 more ip cameras and planning to use PoE switch. will this work on my situation..is this eoc transmitter really need tx and rx? since i can connect a shorter bnc coax direct to the analog camera after the eoc? and i already have cat6 cable..i wish you could help me with my project..again many thanks.”

 

 

For this customer's question, we need to first analyze his use requirements and scenarios.
  1. Current status:
  • The customer has 4 analog cameras installed on the outside of a warehouse.
  • A CAT6 cable is used, and the 8 wires of the CAT6 cable are split into four twisted pairs, each pair of which transmits the video signal to the DVR via a BNC video converter.
  • Each camera has a separate power supply.

 

 

  1. additional requirements:
  • Customer wants to add 1 or 2 IP cameras.
  • The plan is to use PoE switches to power and connect the new cameras
  1. Customer questions:
  • Ask if an EoC (Ethernet over Coax) transmitter can be used to connect a new IP camera with existing wiring.
  • Ask if the EoC transmitter needs to use both TX and RX (transmit and receive) devices.
  1. Answers to customer questions about the use of EoC:
Firstly EOC Konventer must be used in pairs, i.e. EOC Transmitter and EOC Receiver must be used in a line at the same time, they cannot be used separately.
Secondly, if the current DVR used by the customer supports expanding IP cameras through the uplink port, two IP cameras can be connected directly through one Poe Switch. If the current DVR does not support expanding IP cameras through the uplink port, it is not possible to connect IP cameras through the EOC because the EOC does not have the function of converting POE signals into analog signals. Therefore, EOC is not applicable to the usage requirements of this customer.

 

Solution 1:
  1. Keep the original four analog cameras connected to the DVR the same way
First, your existing four analog cameras will continue to be connected to the DVR via the existing CAT6 network cable and BNC video converter. this part of the connection does not need to be changed in any way to ensure that the current system continues to operate normally.
  1. Connecting the DVR to the PoE switch using a CAT6 cable
Next, using a CAT6 cable, connect your DVR to a PoE switch (PoE-Switch). This will ensure that the DVR will be able to communicate with the newly added IP camera via the PoE-Switch.
  1. Connect the two IP cameras to the PoE-Switch using CAT6 cable
Finally, install the new IP cameras in the desired locations. Using CAT6 network cables, connect each IP camera to the PoE switch. This will allow the IP cameras to transmit data through the PoE switch.

 

Connection Diagram

Notes:
  • Device compatibility: make sure all the devices used, including PoE switch, DVR and IP camera, are compatible and work properly.
  • Power supply: In this scenario since the DVR cannot provide power to the PoE switch, it is necessary to supply power to the PoE switch separately.
  • Signal quality: Check the quality of CAT6 network cable and connectors to ensure the stability of signal transmission.
  • Installation Location: Choose the appropriate installation location according to the need to ensure that all devices and cables are connected smoothly.
  • Equipment requirements: need to confirm that the customer's current DVR needs to be able to support the expansion of IP cameras through the uplink port, and the codec capacity to support the needs of 6 devices!
Recommended products for this program: POE-SW508G, POE-SW308, POE-SWR308G, POE-SWR308G25, POE-SWR608G, POE-SWR308G.

 

Solution 2:
  1. Replace your four existing analog cameras with IP cameras and add two new IP cameras for a total of six IP cameras
First, replace your four existing analog cameras with IP cameras. These new IP cameras will take the place of the existing analog cameras. In addition, add two new IP cameras to bring the total to six.
  1. Connect the six IP cameras to the PoE switch using CAT6 network cables
Next, connect all six IP cameras to the PoE switch using CAT6 cables. the PoE switch not only provides power to the IP cameras, but also allows them to transmit data over the network.
  1. PoE switch connects to NVR using CAT6 cable
Finally, use a CAT6 cable to connect the PoE switch to the NVR (Network Video Recorder).The NVR will receive the video signals from all the IP cameras and record and monitor them.

 

Connection Diagram

 

Notes：
  • Device Compatibility: Ensure that all devices used, including IP cameras, PoE Switches and NVRs, are compatible and work properly.
  • Power Supply: The IP Camera does not require an additional power supply and can be powered by the POE Switch. A power supply is required to power the PoE Switch, and pay attention to the power of the Switch to make sure it can provide enough power for all connected IP cameras.
  • Signal quality: Check the quality of CAT6 cable and connectors to ensure the stability of signal transmission.
  • Installation location: Choose a suitable installation location according to the need to ensure that all devices and cables are connected smoothly.

 

Compared to Solution 1, Solution 2 is a complete upgrade of the entire surveillance system. Although it increases the cost of upgrading in the short term, upgrading the traditional analog video surveillance to an IP surveillance system will greatly facilitate the management and use of the surveillance system afterwards.
For a comparison between analog video surveillance and IP video surveillance you can refer to this article. https://eu.linovision.com/en-us/blogs/blog/ip-cameras-vs-analog-cameras-what-are-the-differences

 

Recommended products for this program POE-SW508G, POE-SW308 (also 2* POE-0504GD)
MNVR7608、NVR516P16-K2、NVR516P16-Q2、NVR508P8-K2
In addition, according to the specific application scenarios and needs to buy the corresponding camera