1. Five minutes? Not five seconds?

Yes, 5 Minutes, a +/- 1 second beep

2. Did you try the Hyperterminal program anyway?

Not yet, I'm waiting to see if I get an answer from the contact you gave me (and I don not have much time)

3. Does the mini plug wiggle in the jack, or is it nicely tight

Yes, work perfectly (I use it with my Pronto SBC RU940)

Thanks for your help, will keep this post updated after trying the hyperterminal option (I did not find the page with the details of operations to do)

Ysl