Talk:Pulse dialing

message: Good info.  I would say this article needs a lot of expansion, showing both
classic and modern methods.  (added stub status) mrh 20:22, 22 May 2006 (UTC)
replies: text: If it is modern, it isn't pulse dialing.218.214.18.240 (talk) 23:26, 5 February 2010 (UTC)
replies: text: Many modern PSTN line cards still support pulse dialing.  All of the current System X and System Y (Ericcson AXE10) switches within the U.K. do, for example, and although it's been some years since I left BT so haven't followed the precise details of upcoming changes, I'm led to believe that BT plans to continue supporting it on the new 21CN switches which are now being installed.  31.185.230.165 (talk) 11:05, 19 August 2012 (UTC)
thread_title: Expansion

message: I added this section which I removed from the Rotary phone article because it has a lot more to do with the technology of pulse dialing than it does to do with rotary phones. Cornlad 19:45, 9 August 2006 (UTC)
thread_title:  "Tapping" (abuse) 

message: "In rotary systems this" (The need to pause between numbers so the numbers don't bleed together) "is taken care of by having the user wait for the rotor to revolve back to the start position before the next digit can be dialed."
This is not so. The pause is taken care of by the user putting his or her finger in the dial rotor and turning it to dial the next number. When the user releases the rotor, it will switch the line on and off the correct number of times [b]as the rotor returns [/b] to the resting position (waiting for the next number to be dialed). 
I used to tap-dial telephones all the time... tore a few rotary phones apart to see how they worked. 
Eyknough 03:26, 29 March 2007 (UTC)
replies: text: It looks correct to me.  After the last pulse is sent the dial continues to rotate without sending pulses until it reaches the resting position.  The next digit can be dialed immediately the dial stops rotating.  -- Nick 16:47, 31 March 2007 (UTC)
replies: text:  I agree; what you say sounds correct. But there only needs to be a very short pause between pulses for the numbers to be distinguished. The article seemed to say that the pulses are sent as you rotate the dial, then the long pause waiting for the dial to return to resting postition is what is necessary to distinguish between numbers. It takes about 1/4 second pause between numbers to work effectively. This is long enough for one to dial the next number, no matter how quickly it is dialed. Eyknough 20:14, 3 April 2007 (UTC)

text: Recoil spring is explained in rotary dial.  Perhaps the matter should be clarified here, or the articles merged.  Probably the former, explaining dial pulse operation from the receiver point of view.  Jim.henderson 17:17, 31 March 2007 (UTC)

text: The norm for British & American dials (and almost all others, in fact) is that the correct number of pulses is generated as the dial returns to rest, its speed being controlled by the built-in governor in order to send the pulses at the correct rate (normally 10 pulses per second).  There is a natural delay introduced between the last pulse (or only pulse in the case of the digit "1") being sent and dial reaching its natural position, then an aditional delay before any further can be sent by the user turning the dial clockwise for the next digit.   So the inter-digit pause is comprised of BOTH the last part of the return movement of the dial and the time taken to "wind it up" ready for the next digit.  In fact in many types of P.O. dial mechanism there was also a slight additional pause immediately upon releasing the dial and before the first pulse was sent, due to the design of the mechanism.  In the SxS switches which predominated in the British network, the inter-digit pause had to be long enough to (a) cause the relays in the current stage to recognize that the dialing of the particular digit had finished, and (b) to allow sufficient time for that stage to find a vacant circuit to the next and for that stage to prepare itself ready to receive the next digit.  31.185.230.165 (talk) 11:26, 19 August 2012 (UTC)
thread_title:  I think this part is incorrect.... 

message: It is said: "(But see above if you are in Sweden, New Zealand or Oslo.)" -  nothing to be found "above". —The preceding unsigned comment was added by 85.216.23.182 (talk) 12:24, 13 May 2007 (UTC)
replies: text: That would be paragraph 3, "Two exceptions to this are New Zealand, with [...] and Sweden, with [...]". No idea about Oslo, though. Sabik (talk) 12:44, 19 November 2007 (UTC)
thread_title:  Tapping 

message: The 1 click for 1, 2 for 2, ... 10 for 0 makes sense. Can anyone document in the article why New Zealand and Sweden chose different systems? Kiore (talk) 09:33, 19 May 2009 (UTC)
thread_title: Rationale for "Reversed numbers"

message: RE: (These were phased out between 1958 and 1994 as subscriber trunk dialling was introduced.) 
The push button A and B phones were phased out in the 1960s bar perhaps one or two in the Highlands. This is presumably a typo.
86.132.164.67 22:16, 2 September 2007 (UTC)
replies: text: I'm guessing somebody picked 1958 here for this being when STD was inaugurated from Bristol (it was the very end of 1958).  But the pay-on-answer phone, designed from the outset to be STD-compatible to allow direct-dial STD calls did not appear until 1959.  While the largest period of changeover was as STD was rolled out during the 1960's, there were still a significant number of the pre-pay A/B phones in use into the early 1970's in those areas which were still waiting for STD conversion (with the few remaining A/B phones themselves having to be converted for decimal currency).  The 1994 date is probably just a typo: The very last A/B pre-pay phone was removed from service in a remote spot in the Scottish Highlands in 1984.  31.185.230.165 (talk) 11:43, 19 August 2012 (UTC)
thread_title:  Incorrect date? 

message: I humbly think the article on "Rotary dial" is nicer. This one here should disappear under the "Rotary dial", or both be joined. Additional details: There had been speed dialling with 20 impulses a second. Where and when? Then: The actual electrical process was a complete shorting vs. complete opening of the line during the impulses, so as to give maximum signal rise and fall. A number 8 was 8 full openings of the line, for example. The distance of the 1 from the finger rest was exactly a 3 digit "angle" – at least in Germany with good phones –, as at the end of the dial train two impulses were generated but then supressed to form the extra 2 pulse pause between digits. Fritz Jörn (talk) 08:03, 30 December 2009 (UTC)
replies: text: Where and when?   In North America, some operator console dials were designed to run at 20 p.p.s. where they were always dialing into equipment such as a crossbar or electronic tandem switch which could easily accept the faster dial sequences.   Naturally, that resulted in less time spent by the operators setting up a call, and less holding time for the registers in the equipment, which were only held for the duration of dialing, not for the entire call.   I believe that a few countries tried 20 p.p.s. subscriber dials at one time, but the main limiting factor then becomes the length of the physical lines themselves and the distortion introduced to the pulses.  31.185.230.165 (talk) 11:36, 19 August 2012 (UTC)
thread_title:  http://en.wikipedia.org/wiki/Rotary_dial 

message: I want to tap a drug dealer phone Todscott9300 (talk) 07:55, 31 March 2019 (UTC)
thread_title:  Tapping