INTERNET TEST SET (1996 Version) - Testing Text Transfer

This test uses 80,000 characters (bytes) of "hidden text" calibrated in 4000 byte blocks. The word START appears below as the first test block begins to arrive, measure the seconds it takes to display a number of blocks. If it appears too slowly you can STOP your Browser Loading PRESS ESC (Netscape & Explorer).

START
4000

8000

12000

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20000

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28000

32000

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40000

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52000

56000

60000

64000

68000

72000

76000

80000

(Important: If testing a second time your Browser Cache may store this page giving false transfer results, but which may give a useful indication of the time taken to display the text blocks already in your computer. You can use RELOAD (View menu Netscape) or clear or switch off the Cache to test transfer again.)

Work out text transfer as follows: bytes divided by seconds, eg:

60000 bytes / 10 secs = 6000 Bytes per sec

See below GETTING HIGHER PERFORMANCE

(Important: Do not confuse Bytes per second with BPS which means Bits Per Second for data connections.)

WHAT PERFORMANCE CAN YOU EXPECT ?

One Byte = 8 Bits, a modem can use as little as 3 Bits to transfer one Byte depending upon degree of compression and communication method. Yes, 28.8K modems can out perform ISDN 64K connections. Please see the following table.

HIGHEST PERFORMANCE YOU CAN EXPECT

Connection IMAGES
(5% compression
except ISDN) TEXT
(60% compression
except ISDN) ADinDEX
average
60% Text
40% Images

effective bytes per second (do not confuse with BPS - Bits Per Second)

14.4K modem 1700 4250 3230

28.8K modem 3400 8500 6460

33.6K modem 4200 10500 7980

56K modem
typical 5400 * 13500 * 10260 *

56K modem
best 7350 17500 13500

64K ISDN
digital 7100 7100 7100

128K ISDN
digital 14200 14200 14200

Note: numbers in red outperform 64K or 128K ISDN (ISDN 2)
* Based on average 56k modem performance tests on standard voice telephone lines. Achieving BEST performance is dependant upon local telephone exchange, line and connection technical issues.

GETTING HIGHER PERFORMANCE:

You will see from the above table that existing modems can compress Text 60% depending upon what is being sent. A number of WWW Sites (including ADinDEX) use Compact Image Techniques so overall page data is made up of around 60% text (ADinDEX average). This means you can get much higher effective performance from such Sites with existing modems, as the above table shows, close or better than ISDN speeds.

A large number of Sites do not use the same Compact Image Techniques with the result you wait much longer for pages to arrive, the available Internet capacity is more quickly used up, slowing the system down for every one else.

Click HERE for professional help speeding up a web page or site.

GETTING THE MOST FROM YOUR CONNECTION:

Click HERE to return to Internet Test Menu...

NB: this page is deliberately plain to enable a more accurate Text Transfer Test.

Entire System © ADinDEX(tm)
Best Use Netscape. Set browser font to Arial (or similar) size 10 for 640x480 and 12 for 800x600 screens.

HIGHEST PERFORMANCE YOU CAN EXPECT
Connection	IMAGES (5% compression except ISDN)	TEXT (60% compression except ISDN)	ADinDEX average 60% Text 40% Images
Connection	effective bytes per second (do not confuse with BPS - Bits Per Second)
14.4K modem	1700	4250	3230
28.8K modem	3400	8500	6460
33.6K modem	4200	10500	7980
56K modem typical	5400 *	13500 *	10260 *
56K modem best	7350	17500	13500
64K ISDN digital	7100	7100	7100
128K ISDN digital	14200	14200	14200
Note: numbers in red outperform 64K or 128K ISDN (ISDN 2) * Based on average 56k modem performance tests on standard voice telephone lines. Achieving BEST performance is dependant upon local telephone exchange, line and connection technical issues.