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<div class="moz-cite-prefix">A lot of older systems will set the
clock from the incoming caller ID data - the time and date are
in the stream of FSK along with the number and name. You'd want
to make sure that ATA has valid time and timezones set, then
send a call into them and the PBX should jump to the correct
time and date</div>
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<div class="moz-cite-prefix">On 5/14/20 11:42 AM, Colton Conor
wrote:<br>
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<div dir="ltr">We had a customer that had Frontier Analog phone
lines going into their Panasonic TDA-50 PBX system. We recently
ported the numbers from Frontier to our Broadsoft, and deployed
a Poly OBI508 ATA onsite. We also replaced their router and
internet connection.
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<div>Customer is complaining that their phones are displaying
the wrong time. We explained to them that we did not mess with
their phone system PBX only the input lines.</div>
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<div>My question is, do oldschool, onsite PBX systems, like a
Panasonic TDA-50, use the analog FXS input lines from the
provider (us) as a timing source? If so, what protocol is
this, and where would be change it on the adapter? </div>
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<div>I would think most PBX systems are like computers, and
would use NTP as the timing source. </div>
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