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After looking around for a couple hours, I can only find that files with this extension are associated with JPI TopSpeed Pascal.

The files were generated by a cable tester and I have no idea what the model number of said tester is.

Essentially, I was given a number of files by someone at work and asked, "How do I open these?"

Any help is much appreciated. Thanks, all.

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Instead of spending hours looking for what opens a particular format, Wotsit can be useful:! – RobotHumans Apr 2 '12 at 16:04
Thanks for the info, @aking1012. Although it didn't help with this particular problem I'm definitely going to keep it in mind. – Tass Apr 13 '12 at 14:03
Topspeed Pascal is a dos/win16 pascal compiler which together with the Modula2 version of that line were quite popular in 16-bit times. .itf files are probably "interface files" and as such a kind of header files, not actual code. Probably the code is stuffed top till bottom with 16-bitisms and dosisms, so unless you have the compiler (hard to come by nowadays), the only thing you can do is try to understand it and rewrite in something else. – Marco van de Voort Jun 30 '15 at 17:22
OLD question, couldn't even remember posting this. Thanks for the reply, @MarcovandeVoort. Has since been resolved, I believe. (Or is no longer an issue.) – Tass Jul 1 '15 at 20:37

Can they be files used by Interlis? If yes, I think that you should use it to manipulate them. On that site there are some examples too. Unfortunately, it seems only for Windows.

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I'm leaning toward these files not being related to Interlis. They were generated by a cable tester (telecommunications equipment). – Tass Apr 2 '12 at 17:17

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