Re: 4/2 4/1 Timing Protocol Spefications wanted (Alarm protocols)

[ABLE1 <somewhere@xxxxxxxxxxx>]

On 12/28/2021 9:52 PM, Bager2700 wrote:
> On Tuesday, December 28, 2021 at 6:30:04 PM UTC-8, ABLE1 wrote:
>> On 12/28/2021 6:00 PM, Bob La Londe wrote:
>>> On 12/28/2021 2:25 PM, Bager2700 wrote:
>>>> Hey I know 4/2 protocol is older than the days, however I am looking
>>>> for the specs for the timing of the protocol.
>>>>
>>>> AKA  from Dialer going on line to waiting for station receiver online
>>>> panel data tone bursts --- ACK -- kissoff etc.
>>>>
>>>> Although the timing is fairly flexible  i would like to know the
>>>> actual specs for the sequence and timing.
>>>>
>>>> I have the SIA, Contact ID, FSK, etc but 4/2 formats i have not found
>>>> information.
>>>> Does anyone have the info?
>>>> Thanks inadvance
>>>>
>>>>
>>>
>>>
>>> Best guess?  Whatever the acceptable timing is between digits for pulse
>>> telephone dialing.  Really.  That's where it comes from.  Its also why
>>> pulse format is so slow compared it CID or other single tone/digit formats.
>>>
>> Hi Bob, Not even gonna hint you are wrong!! No way!!!!
>> But, what I will say is that if Bager2700 hasn't already Googled Pulse
>> Dialing AKA "Rotary Dial" the answer is as follows.
>>
>> ========================================================================
>> Within the Bell System the dial pulse period is nominally one-tenth of a
>> second long, permitting a rate of 10 pulses per second. Modern
>> telephones are now wired for push-button dialing (see below), but even
>> they can usually generate pulse signals when the push-button pad is
>> operated in conjunction with electronic timing circuits.
>> ========================================================================
>>
>> Have a good rest of the week!!!!
>>
>> Les
> Hey guys it not, the pulse dialing (make/break ratio) specs that I am looking for but the 4/2 protocol ... so communicator goes on line and completes it dialing via DTMF or Pulse. Then waits for the Central station RX to come online with its format tones.  How long will the 4/2 wait for this, how many milliseconds are the data bursts and timing of the data.
>
> so ONLINE-<wait how long?> <CS, tones approx 750ms><communicator data bursts time?>< no pulse time?><next data> then finally <kissoff approx 750ms>  <communications completed.>
> The mystery is what the actual specification are for the 4/2 data format?
>
> Hope that all make sense?

Dear Bager2700,

Please understand that we here are/were Alarm Dealer/Installers.  We
just have to properly connect the phone line thru a RJ-31X block,
program the panel with the proper phone number for the Central Station
Receiver, Enter the proper Account Number for the Customer in the proper
fields and save it.  Then trip a zone and check the Test History for the
Receiver and all is good.  I never cared about what you are asking.
That being said, I did a little Google and found the following.

https://www.patriotsystems.com/p65library/4X2Format.html

That may get you a little closer.  Beyond that I am at a loss.

Good Luck!!

Les