Specfically, that pause was the part of the Hayes AT command-set that was patent...

thristian on Nov 13, 2012 | parent | context | favorite | on: Microsoft's Skydrive sends two million NULL charac...

Specfically, that pause was the part of the Hayes AT command-set that was patented. Therefore lots of manufacturers who didn't want to licence the patent but wanted to have 'Hayes AT compatible' on the box just didn't bother implementing the timeout-cancellation bit.

nickzoic on Nov 14, 2012 [–]

Wow, I didn't know that, it explains a lot.