This is a bit of a tangent, but for those who care:
Whew! All that's a bit over my head!...
Allow me to clarify the lingo:
...22x/35x Day/Night PTZ Pelco...
22/35x = zoom. With 35x, you can clearly read a driver's license on a counter 20 feet below the camera
Day/Night = Type. You can have three general types of camera: B&W, Color, and Day/Night (in "day" mode you get full color usually with an InfraRed filter over the sensor which reduces color blurring on each color by IR light, in night mode you get B&W without the IR filter to increase the light sensitivity and make it possible to use "invisible" IR illuminators)
PTZ = Movement. P - Pan, T - Tilt, Z - Zoom
List on the SpectraIII (x35) was $2,500, but I found them Blow-Out/wholesale at a CCTV shop that was closing down
...I have a line on 8/16 channel "D1-realtime-H.264" recorders that are web enabled (even send video to 3G phones directly), and take 8x 1.5GB drives - all at cost...
1/4/8/16/32/64 channels - this is how many simultaneous video feeds the recorder can record (usually from different cameras)
1/4-CIF, 1/2-CIF, CIF, 4CIF, D1 - the is the total resolution that the recorder can capture from a givev video feed (1/4CIF is 176x144 or 0.025 MegaPixels, D1 is 720x480 or 0.345 MegaPixels - with Standard Definition cameras .3MP is as good as it gets). There are HD-CCTV products sold now that record at 720p (0.921MP @ 60fps) and 1080i (2.073MP @ 30fps) - as well as multi-megapixel cameras
1/2/5/10/15/30fps( 30fps or greater is considered "realtime") - these are common progressive frame rates for video recorders, the faster (higher) the frame rate the smoother the video is. the lower the frame rate the jerkier the video (and you can miss thing that happen between frames = bad)
MJPEG/MPEG2/MPEG4=H.264 (compressed) or AVI (uncompressed) - this is the encoding method for digital recorders to take a frame of video and store it as data. This is different than say directly recording to a VHS tape which is also possible...
Web-Enabled - Some recorders are local viewing only, meaning a video display is directly attached to the recording device or some other video processor (like a 4-camera "quad", which puts 4 separate images on one screen). Web-enabled recorders have a network or phone connection along with a separate encoder that compresses the video to be viewed remotely. Some recorers even allow both at the same time, or even better - many people logged on with different permissions and viewing remotely, backing up pre-recorded video remotely to DVD, viewing locally, backing up pre-recored video locally to DVD all at once without one user's task interfering with another's task.
3G-RTSP - This is the 3G mobile broadband "Real-Time-Streaming-Protocol" which allows video to be sent from a server (video recorder, computer, etc) directly to a client (3G phone with video support like iPhone, or any new Google android phone) while maintaining video quality based on the link quality and available bandwidth. You don't need to know how
is works, just that it does