Montana Software


Web server provided by:
Pair Networks, Inc.
Accel SpeedTec
Frequent Questions


What does SpeedTec do?
How much does it cost?
How can I measure my results with SpeedTec?
How can I purchase SpeedTec?
Is it safe to purchase on-line?
How can I be sure I have the latest version of SpeedTec?
Which Operating Systems are supported by SpeedTec?
Does SpeedTec support Cable and DSL connections?
What is "Auto Discovery?"
What is "Black Hole Detect?"
Error message: "Unexpected Runtime Error 50003"



What does SpeedTec do?
SpeedTec modifies TCP/IP settings in the Windows Registry to increase speeds for internet surfing, file downloads/uploads, e-mail, etc. See the SpeedTec General Information page for a more complete explanation.

How much does it cost?
SpeedTec costs a one-time fee of $14.95 per computer. For information on site licenses, e-mail us with the type of business and the number of machines you have. We'll respond promptly with a site quote.

How can I measure my results with SpeedTec?
We recommend you measure your results both before and after using SpeedTec. CNET has a Web site specifically designed to measure internet speeds through your system.

To test your speed, go to this address:
http://webservices.cnet.com/Bandwidth/

This test downloads a large image file, measures the time it takes for the download, then does the math to report your download speed.

Once you log onto the site, you will see a form on the page. Enter your telephone area code into the text box. That will ensure you are testing your speeds through the closest server. Next click the type of connection you have. It is highly recommended you choose "ISDN" or higher. That will download a larger file to test your speeds, and give more accurate results. Finally, click the "Go" button. The CNET site will begin the download.

When it is finished, it will post your speed on the next page. Hit the "Back" button on your browser to repeat the test.

We recommend you run this test late at night to avoid false results from an overloaded server. Make sure you have no other programs running that will use your modem. Run the test 14 times. Drop your 2 highest and 2 lowest numbers and take the average of the remaining 10 results. Measure your speed before and after optimizing with SpeedTec, and you'll get a good idea of the SpeedTec results.

How can I purchase SpeedTec?
You can purchase SpeedTec on-line with your credit card, or by mail with a check, money order, or cash. If you are ready to purchase, visit our SpeedTec Purchase page for a links to on-line stores and instructions for purchasing by mail.

Is it safe to purchase on-line?
It is completely safe to purchase from us or through one of our online vendors. We use state-of-the-art Secure Socket Layer servers with advanced digital encryption. When you order that way, your card number is never seen by humans ... we never even see the number ourselves. It is all transmitted electronically to the banking institutions. This method is certainly a lot safer than handing your credit card to a waiter in a restaurant. And in the unlikely event there is a discrepancy on your bill, you simply send your credit card company an explanation of why you dispute that charge, and they refuse payment to the vendor. The vendor is then forced to prove they provided you with a product or service.

How can I be sure I have the latest version of SpeedTec?
Starting with version 2.1, checking for updates is easy! In the main window of the SpeedTec program, find the menu called "Product Updates." Select the option to "Check for Updates." This will start the SpeedTec Update utility. Press the "Check for Updates" button. SpeedTec will check the Montana Software Web site to for a later version. If a later version is available, the update utility will give you the option to automatically download and install it.

Which Operating Systems are supported by SpeedTec?
SpeedTec supports Windows 95, 98, Me, NT4, 2000, and XP.

Does SpeedTec support Cable and DSL connections?
Yes, SpeedTec will set MaxMTU and other settings for your cable or DSL connection and won't cause any conflict with your dial-up adapter. Our tests have shown a very strong performance gain on cable modems. We recommend setting MTU to 1500 and RWin to 46720.

Here is what one user wrote:

"I did as you said with 14 tests, averaging the
middle 10 and got 2869 Kbps. That's quite an
improvement ... it was about 516 or so before
SpeedTec. Also, I downloaded a 17 meg file in
about a minute and a half."

For more testimonials from SpeedTec users, visit our SpeedTec Testimonials Page.

What is "Auto Discovery?"
Enabling Auto Discovery causes TCP to attempt to discover the Maximum Transmission Unit (MTU or largest packet size) over the path to a remote host. By discovering the Path MTU and limiting TCP segments to this size, TCP is supposed to be able to eliminate fragmentation at routers along the path that connect networks with different MTUs. This requires implementation of the corresponding server side algorithm, however, and presupposes all of the servers on the entire Internet only running MSFT server software with server-side optimization features accessible from MSFT web-browser client software. Needless to say, this is rather unlikely. Nevertheless, it is not recommended to disable this setting as it would then cause an MTU of 576 bytes to be used for all connections that are not to machines on the local subnet. Disabling this setting can cause severe performance degradation because fragmentation may not be compensated for. PMTU Auto Discovery is Enabled by Default.

What is "Black Hole Detect?"
This specifies whether the Windows TCP/IP stack will attempt to detect Maximum Transmission Unit (MTU) routers that do not send back ICMP fragmentation-needed messages. ICMP (Internet Control Message Protocol) is defined in STD5, RFC 792. With this feature enabled, TCP will try to send segments without the Don't Fragment bit set if several re-transmissions of a segment go unacknowledged. If the segment is acknowledged as a result, the MTU will be decreased and the Don't Fragment bit will be set in future packets on the connection. Enabling black hole detection increases the maximum number of re-transmissions performed for a given segment. Setting this parameter when it is not needed can cause performance degradation. However, if the router is not sending back the ICMP messages, then PMTU Discovery will not work. This can cause an even greater loss of performance. PMTU Black Hole Detect is disabled by default.

Error message: "Unexpected Runtime Error 50003"
This error is caused by the wrong version of the Microsoft Runtime files installed on your machine. They were likely installed by another program, as SpeedTec uses the latest versions. For information on how to correct this problem, click here.






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Web server provided by:

Pair Networks, Inc.