Hi,
I leave in Australia, I have a switch box in my office which has several extensions I need the dial tone to dial national or international call, can anyone tell me what code I have to enter order to get the dial tone.
Thank you.

Companies/People will Put Call Restriction to keep people from making those calls or have each individuals accountable for their calls determined by the code they enter.
If "Nancy" was making long distance calls late Fridays, and the only person in the office was you, you Could easily get caught.

I used to Install Mitel's Smart1's in the '90s It was only 3 digits, I could easily Guess a code. They have advanced.