4 ms·

With pulse dialing "1" is one click, "3" is 3 clicks, "9" is 9 clicks You can't have zero clicks, so "0" would have to be 10 clicks

• Luc 3y ago
  Yes, dialing 0 sends 10 pulses.
  • iso1631 3y ago
    In which case it needs to be after 9
  • dang 3y ago
    Sorry for the offtopicness but can you please email hn@ycombinator.com? I want to send you a repost invite.
• kalleboo 3y ago
  This is not universal. E.g in Sweden we used one pulse for 0, two for 1, etc