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bobby1471

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Posts posted by bobby1471


  1. If the ddns of the dvr has a way to specify where it sends the request to then it can be used for even DYDNS it's just a matter of does it really send out any information or a "here I am" message.


  2. Is it necessary to have an external power supply for system with 8 network (IP) cameras connected with CAT-5 line to one router?

     

    If the cameras are all PoE devices, and the switch is rated to handle that much power then you should have no problems sending power and data over the cat5/cat6 cable. Just make sure you verify the power consumption of the cameras, and the max per port and total on the switch.


  3. There is 2 different resets. You can do the full reset or reset everything but the IP address.

     

    The 221 pdf I downloaded only lists one. What is the procedure for the full reset? Thanks.

     

    There is two ways to perform a factory settings default.

     

    One is the way you described with the cycle power and hold down the reset button. The other is to log into the came from a web browser and inside the Maintenance area, inside this area is an option for factory default including IP or not including IP. IF you are not the origonal owner/admin of this camera my guess is the person who had it before you performed a factory default without reseting IP and the camera would not override that until a new root password was setup.


  4. Just use 1 or 2 wireless repeaters or wireless routers in repeater mode. There are many great solutions out there that are easy to use. The only thing I would recommend checking from experience is that they have a removable anttena. This is because you need to put the anttena up as high as possible to maximize distance, so its a good idea to extend the length a few feet.


  5. The easiest and cheapest way around this problem is simply get an outdoor enclosure and place a standard PoE swtich inside this box. This almost always will work, unless your in harsh areas. If your in hard condition areas your into a situation where you would consider possibly a heater/blower outdoor enclosure.


  6. In responce to AK357,

     

    IEEE-802.3af states that the Power Sourcing Equipment PSE can choose either Variant A, which places power on lines 1,2,3 ,6 or Variant B lines 4,5,7,8.

    A Powered Device (PD) that is IEEE-802.3af compliant must be able to accept power from both sources. Also within the IEEE-802.3 standard the PD device must accept positive or negative on either lines.

     

    From our research we found that most Injectors and Mid spans use Variant B with Positive power on Pins 4.5 and Negative power on 7,6.

    Network Switches with PoE seem to use Variant A.

    Cisco also uses Variant B but with Positive power on 7,8 and Negative power 4,5.

     

    But all this has nothing to do with the bandwidth of Ethernet per say. Yes unclean power can foster cross talk which can effect things.

     

    james.

     

    reviving old posts? But Your right, POE does nothing to the speed on 99% of your installs.


  7. In IP Cameras you truely get what you pay for. If you buy cheap IP cameras your going to get cheap quality video. IF you buy mid-grade price your going to get decent quality images, if you buy top cameras (axis) your going to get superb quality. As far as the image goes, its most like that the network side of that camera isn't fully develope as it should be, because typically on a LAN your IP camera will look as good or better than analog.


  8. Ok, I'm not sure I get what your saying well enough and I might be making silly replies here but basically heres how it would work.

     

    192.168.1.101:8001 - DVR 1

    192.168.1.102:8002 - DVR 2

     

    Set these ports forwarded inside your modem/router like so:

     

    Internet.IP.Address.Here:8001->192.168.1.101:8001

    Internet.IP.Address.Here:8002->192.168.1.102:8002

     

    If you need more help feel free to tell me, as my explanation may not be clear enough or over simplified.

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