Instruction manual

TCP/IP Internet Basics

of the plumbing rather than through a straw. The same concept applies with the Internet. For a

large amount of data to travel the Internet then there has to be a large pipe to accommodate that

data. When receiving high-speed Internet, the provider should give a bandwidth quote telling

you how much bandwidth they will provide you. There are two types of bandwidth that you need

to be aware off and many times the quote on your bandwidth will be displayed like this

1000/128. The first number is downstream bandwidth, the second number is upstream bandwidth.

Downstream Bandwidth

– This determines the size of the pipe coming into your location. If you

are retrieving data from other networks, you should have a large amount of downstream bandwidth.

This also is stated in kilobits/sec (Kbps). Take in mind that Kbps is not equivalent to KB/sec.

Upstream Bandwidth

– This determines the size of the pipe going away from your location. If you

are providing or sending data to other networks, you need a large amount of upstream bandwidth.

This value is given in kilobits/sec (Kbps). Keep in mind that Kbps is not equivalent to KBps

You may ask, “So do I have two separate lines, one for upstream and one for downstream for my

Internet connection?”. The answer is ‘No’. You still have one physical line, but within that one line

just imagine two separate pipes – one for downstream data transmission and one for upstream

transmission.

The location where you install the NVS must be able to provide data to other remote locations

quickly, thus you need as much UPSTREAM bandwidth as possible. You will be serving a large

amount of data.

When accessing the NVS from a remote location (such as a hotel or home), you want as much

DOWNSTREAM bandwidth as possible. You will be receiving a large amount of data.

You need high-speed Internet access when utilizing the remote viewing features of the NVS.

Converting real-life images into compressed digital images requires a large amount of data. You

simply can’t serve that large amount of data through a dial-up connection, the upstream pipe is way

too small. For another analogy, it would be similar to pushing a tidal wave through a straw. Not

only do you need high-speed Internet, but remember to request the highest amount of UPSTREAM

bandwidth when deciding on a provider for the Internet access, to the location where the DVMR will

be installed. Plus, the location from where you are accessing the data using the remote software

should be at a location with high-speed Internet with a large amount of downstream bandwidth. You

etwork Video Server User’s Manual

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