4 ms·
That doesn't seem to work - I have a POTS line here, and no amount of tapping or striking the phone receiver on a surface is the equivalent of dialing (I tried
by Johnny555 10y ago
That doesn't seem to work - I have a POTS line here, and no amount of tapping or striking the phone receiver on a surface is the equivalent of dialing (I tried the phone itself and my headset microphone). Perhaps a local VoIP ATA works that way, but my Telco does not. And I'm not surprised, there's a big difference between detecting an audio signal and detecting a local loop interruption through 18,000 feet of copper.
- qb45 10y agoI'm under impression that pulse dialing had been phased out in many countries, with tone dialing being the replacement.
- Johnny555 10y agoPerhaps so in some countries, but in the USA, pulse dialing still works (even VoIP ATA's here support it). There's lots of older automated equipment out there that depends on it (elevator call boxes, alarm systems, building front door call boxes, etc.) My "in case of power failure" phone is an old red Bell System desk phone with rotary dial. Still works great.
- deleted 10y ago[deleted]