andrewgroup

Let me recap and see if I understand the configuration. 1 T1 with multiple static IP addresses Two low cost routers with two public IP addresses and one serves the PC and the others serves the Camera system. If that's the case, please research the routers to see if they support triangular routes. Many routers are troubled by routing to an adjacent IP address. I'm reasonably confident you have each router configured with a single static IP address, and they share the same subnet mask, and the firewall is set by default to Single User Access mode. SUA. you could have accomplished the same result by placing the second router WAN interface on the first LAN range with an unused static IP address, and created the necessary port forwards on the each router for the NVR access ports... (that's the cheap solution) A small LAN switch that support VLANS and inter-VLAN routing and provides VLAN DHCP services would be a better choice. Netgear and others have a number of these under $500 Cheers - Andrew

When you say "outside your house" do you really mean on the side of your house.? If so, then standard PVC cat5e cabling will suffice. assuming the camera mounts come through the camera base, and the cameras have the necessary rating to prevent leakage. Please place a drip loop in the cable as it leave the camera to prevent water from running back into the camera through the rubber cross cut seal. For the DYI, I recommend you go online and buy premade LAN patch cords, and don't try and use solid core structured wiring and crimp ends. You can find 100' CAT5E premade and tested cords for $10 buck each or not much more.. I will tell you, after 1,000's of POE camera installations, cheap POE switches are very sensitive to nearby lightning strikes. For a few cameras, I prefer and recommend POE injectors and use your existing switch. cheers

For our Larger Civic Wireless Applications we use Proxim 8xxx series primary radios on towers, and 81xx subscriber radios at remote locations. this is a 300MB/50MB solution out to about 5 miles given clear views. Proxim also makes excellent P/T Bridges. Proxim, and now others are offering a special hybrid frequency hopping encoding within the 2/5 frequencies to protect the transmissions while still using unlicensed freqs. Another player on the market, with a proprietary encoding method, at a significant cost advantage is Microtik. they have an extensive network of worldwide consultants and resellers. The upper solution can exceed 8K quite easily, while a similar solution with MT might not exceed 3K... MT also has a very capable, and free SNMP / Router management system called DUDE. there is a place for each of these solutions, and experience determines the choice.. Cheers - Andrew

there is so much to be said about this issue. we have several 300+ ang growing camera environments, and the issues you face are related to streams management in the chosen VMS. record streams are different from the view streams. The typical encoded video MPEg4, MjPeg, H264 are all encoded at the camera and sent via the LAN to the recorder. (recorded frames are typically higher bit rates, ips rates etc..) When you want to view a camera, another stream is opened from the camera, and these smaller streams are aggregated onto the client VMS device... I suspect, they buffer these smaller live feeds onto the disk storage so that only one view stream is opened at any given time and multiple viewers can pull that stream into the client... I won't go too deep, but when recording many cameras, the issues you face ais simply getting the correct storage system that can handle the bit rates. A single 7200 RPM SATA 3 disk from Western Digital installed as a second spindle on a Windows 7, or Windows Server can handle about 60 to 80 Mbs video recording when recording a single large stream. recording more streams, will force more head movement and the overall rates will fall... When you start watching recorded video, all bets are off on performance. this might explain why they would record the live view stream to another spindle keeping the recording video head motions limited.. VLAN's, QOS, are all secrets to make these systems work. We are in the Midwest but we do not do spec / bid projects... Hopefully this advise will help you better understand the proposals.. Cheers - Andrew

We have been asked to create a solution to move a PTZ motor to 1 of many (6 to 10) preset locations based on recieving a contact closure from detection devices. MORE info.. We have a property (football field) with items on interest spread about the lots. We can easily detect folks walking about, in a given zone with both motion and PIR detectors, and we can wirelessly recieved activity from any of the detectors. the reciever will close 1 of many contacts, and we would like to take that contact closure and feed that into a PTZ controller or sorts and direct a PTZ motor that has narrow beam bright light the area on the lot indicated by the motion/pir detectors. With success we have a big opportunity to place more of these in service. We are researching the KTD-415 GE Security KTD-415 Preset Alarm Interface Module, 16 Alarm Contact Inputs to determine if it may work. we'd prefer not to install a joystick controller box, no cameras, "yet" this is a deterent system only. Any thoughts are appreciated. Cheers Andrew

My first thoughts are if you can keep the count of devices under 50, then I would use a 48 port switch. Something more in line with GS748TPS I would not specifically require that these be 1GB ports, but having 4 1GB ports for server connectivity will be best.... The reason is the switch fabric on the switch will allow 1GB of data to stream to the data server from PC's while at the same time allow 1GB of streaming to the other 1GB ports.... The fabric likely will switch over 50GB all at once. IF you needed more bandwidth to a DVR or SERVER then LAG another port to the server. Note VLAN's are seperate broadcast domains and for less than 50 devices, and likely the same IP scheme, I would avoid using VLANS. No benefit. However, I would strongly suggest that you learn and understand 802.1Q and P so that you can learn to assign physical ports, packets, and protocol varying levels of priority within the switch. Note the term, "QOS" is a joke and in almost all cases, you must fully inderstand how different devices TAG the headers in packets so that you can assign these packets to Queues within the switch. Note, Setting TOS/COS packeting tagging on windows is all but useless , so you'll likely assign physical switch ports to prioritize packets to and from a DVR or VoIP PBX. also, if you plan on exceeding the 40 ports, then first buy a switch that supports STACKING. this will create a much higher speed backplane between two or more switches and give you a single IP web interface to manage the stack...

Sure, non powered BALUN devices will operate up to 900' at 10MB only. Powered devices can reach distances of 3000' and up to 80mbs of speed. The unpowered devices cost about $20.00, while the powered devices are more.... http://www.computercablestore.com/Monoline_Coax_Ethernet_10_catID1115.aspx The standard is called "Ethernet over Coax" searching for that, and you'll get plenty of information.. companies like.. http://www.gefen.com/gefentv/gtvproduct.jsp?prod_id=5275

Assuming the DVR is behind some type of ADSL or CABLE firewall/router. Then visit www.dyndns.com and establish a free or minimal account. DYNDNS is a service that will allow you to select from any number of domains they own and with a software client on a PC, or more appropriately a DYNDNS setting in your ADSL or CABLE firewall - router, you can enter your DNSDNS account name and password and DYNDNS will determine from the regular software registrations are and assign that IP as a subdomain to one of theirs that you chose. If it's a one time thing then simply use a name myhouse332.homedns.org Now whenever the update software on the PC or the router logs into the dyndns then that public IP will be assigned to the subdomain you selected. Now you need to understand how to correctly create the necessary port forwards allowing you to access the video streams. We abandoned raw port forwards years ago due to BOTS and hacking, but if you normally would only be viewing from work, you can use www.iptools.com from work to learn the office IP Addresses, and you should be able to restrict the port forward to only work from the office IP ranges.... That would be far more secure... For more restrictive access, we use firewall / routers that support SSL VPN connections and some with 2 factor authentication, (DONGLE) and once you connect to the SSL link, the router will publish the streams to your account if you are given access to that internal device. Cheers -