<human>: Not today but earlier this week, I installed a new copier/scan/fax/magic machine at the office. 

Easy enough. Time to test it, I'll send one to another office's fax machine. I haven't had to do much faxing until recently, but I'm told it generally works better if you dial "1", the international calling code for the US of A, before the 10-digit number. 

Little did I know, the fax machine was conveniently but unnecessarily configured to atuomatically dial "9", commonly used to reach an outside line, then "1", the International Calling Code for the good ol' US of A. (I live in the USA in case you haven't put that together) 

I noticed the error and (I thought) successfully cancelled the fax, but the damage was done. The police show up about 5 minutes later, at which point the entire office is paying attention while I explain to the cops how I called 911 over the fax machine.

They were cool, as soon as I said fax machine they knew exactly where I was going with it and just said "you going to fix it so it doesn't do that?" and I already had.

They walk out, cue the entire room erupting in hilarity to my chagrin. Won't live this one down any time soon.

Summarize the given text in a few sentences.
<bot>: don't dial "1" before the number if your fax machine is set up to dial "9,1" first