INTERNET ACCESS INFORMATION
Internet access speeds can vary significantly over the period of a day. Also internet speeds are measured for both download and upload speeds. The download speeds usually much faster than the upload speeds. Internet access speed can also vary by the kind of access your computer provides. As an example, cable access thru an Ethernet cable connection is much faster than thru a wireless connection (wifi), using the same computer and internet access connection.
There are basically three kinds of internet accesses: dialup, DSL and Cable, which are covered below. All three kinds require a modem, and the modems are not interchangeable
1. DIAL-UP – How fast is dial-up internet service?
Most dial up is rated at a maximum at 56 Kbs - 56000 bits per second
However, most dial-up services most usually operate more like 44 Kbs or less. There is also a dial-up service called accelerator that compresses the data and gives actual speeds that are higher than 56 Kbs. 56Kb modem is usually identified as a V.90. A dial-up modem uses ordinary telephone plug as an the access to a telephone outlet. While you are using your modem online your telephone will be busy for calls both incoming and outgoing.
2. DSL Speed - How Fast Is DSL Internet Service?
DSL stands for Digital Subscriber Line
To have DSL access you must have a DSL modem. A DSL modem uses a telephone cable to connect to a telephone outlet the same outlet as your telephone instrument. It is sometimes necessary to put a filter on the telephone line to make the DSL modem work properly. While on your DSL modem you can still use your telephone for incoming and outgoing calls.
Local DSL (Embarq) when working properly is 1,400.00 kbps or 1.4 Mbps for downloads and the upload speed is 350.00 kbps for $25.00 per month. And for twice that speed $35.00 per month.
Compared to the performance of cable Internet service, DSL speed has historically been slower. However, the speed of DSL Internet is increasing as the technology improves and service providers upgrade their network infrastructure. The exact DSL speed you will enjoy varies depending on several factors. How fast, then, is DSL?
Service providers advertise DSL speed in terms of bandwidth ratings. Bandwidth numbers advertised for residential DSL service range from 128 Kbps to 3 Mbps (3000 Kbps). And of course the cost varies with the speed.
Because these DSL speed ratings vary so widely, it’s best to check first with your service provider to determine the bandwidth levels associated with your subscription. Many providers offer a choice of DSL services with different bandwidth ratings.
AT&T DSL SERVICE
AT&T has just offered a DSL service for $10 per month. It works at speeds of 768 kbps download and 128 kbps upload. That is similar to their $19.95 plan. This DSL plan was part of a concession made by AT&T to the FCC to get its acquisition of BellSouth. This offering was made on June 16, 2007 to its customers in the 22 state area which includes the former BellSouth areas.
3. CABLE SPEED – How fast is cable?
(cable is sometimes called Broadband)
Shell Point Cable with an Ethernet cable connection to the computer is approximately 2,800 kbps or 2.8 Mbps. But it will vary over the period of a day and can get as low as 1,400 kbps.
The upload speed is approximately 350 kbps
Shell Point Cable with a wireless connection (WIFI) is usually much slower at approximately 1,200 kbps download and 2.50 kbps upload.
To have cable access you must have a cable modem. A cable modem uses a TV plug as access, the same one that your Television uses. Cable modems and DSL modems are not interchangeable.
OTHER KINDS OF INTERNET ACCESS
Cellular telephone companies provide a service sometimes called an “Aircard” which allows internet access using a cellular connection. It is usually very slow about the same speed as dial up.
Then there are the Direct TV companies that provide internet access thru a dish on you house or a community building
EXPLANATION OF TERMS
What is BANDWIDTH?
Definition: Bandwidth in computer networking refers to the data rate supported by a network connection or interface. One most commonly expresses bandwidth in terms of bits per second (bps). The term comes from the field of electrical engineering, where bandwidth represents the total distance or range between the highest and lowest signals on the communication channel (band).
Bandwidth represents the capacity of the connection. The greater the capacity, the more likely that greater performance will follow, though overall performance also depends on other factors, such as latency.
Also Known As: throughput
Examples: A V.90 dial-up modem supports a maximum theoretical throughput of 56 Kbps. Fast Ethernet supports a theoretical maximum throughput of 100 Mbps.
Bits per second (bps)
Definition: One kilobit per second (Kbps) equals 1000 bits per second (bps). Kbps is also written as “kbps” that carries the same meaning. Likewise, one megabit per second (Mbps) equals one million bps and one Gigabit equals one billion bps.
Note: This information was downloaded from various internet sites including a bandwidth measuring site www.bandwidth.com
Definition: A Bit is a contraction of binary digit - A binary digit is either a 0 zero or 1 one.
Text is converted from the alphabetic characters humans use, using the ASCII code (American Standard Code for Information Interchange)
Examples of the ASCII code are:
A = 01000001 and a B is 01000010 or a = 01100001 and a b is 01100010
1 = 00110001 and a 2 is 00110010 or $ = 00100100 and a ? is 00111111
Computer graphics (pictures) are broken up into little squares called pixels (picture elements). Each little square represents a color with a combination of 8, 16, or 24 zeros and ones to represent the different colors depending on the protocol. Some protocols have even more zeros and ones to give a better picture.
It is possible to now to have a video conference over your internet connection as well as watching a movie or news casts. However video streaming takes a very large part of the available bandwidth to do this, and you may be causing others that are using the same internet access a serious problem by slowing down there access speeds or in some cases blocking their access completely.
Filed in INTERNET STUFF FOLDER