I puchased one kx t 7565 x ph for my panasonic epbx it is not working what can i do i verified the epbx box one line the voltage is low

Not sure what you mean by "The boxes go off", it is a phone, not a box.

Return to Panasonic for warranty repair.

https://www.google.com/search?q=kx-T7633

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A bad connection by your Telco outside, on poles, or underground vaults or a bad connection in the box.

Panasonic Hybrid IP-PBX KX-TDA 50 User Manual.pdf

https://www.pbxmechanic.com > manuals > Panasonic ...
The Panasonic KX-TDA50 has been powering small office communications for now. It's a hybrid IP-PBX System and capable of supporting 48 digital KX-T7600 series ...

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  Panasonic Hybrid IP-PBX KX-TDA 50 Installation Manual.pdf

  https://www.pbxmechanic.com > manuals > Panasonic ...
  The Panasonic KX-TDA50 has been powering small office communications for now. It's a hybrid IP-PBX System and capable of supporting 48 digital KX-T7600 series ...

Gather what? A PAP2T is a 2-port FXS box. A 7730 is a phone that works on a Panasonic Key Service Unit. You can plug the CO lines of a KSU into the PAP box and the 7730 into the KSU and get dial tone on whatever line you used on the PAP if that's what you're asking.

Carl

The 7730 is a Panasonic Analog System phone. It plugs into a Key Service Unit and the line port plugs into the PAP2T device. Model numbers like KXT-A624/824 are examples.

Carl

If you have to eat the system, I'd suggest butter, salt and pepper LOL

Seriously, what happens when you plug a regular phone directly into the outside lines? Or, better yet, plug a regular phone into jack 01 and TURN OFF THE POWER on the phone sytsem.
Now you have a phone wired to the outside line. If you can hear on those, then you may have a line current issue, or something else. If you can't, the telco is obligated to give you a line you can hear on. If they can't deliver, try an alternative like Vonage.

Carl

here's a problem. The 7730 is a PHONE. The sytsem it could be connected to, one of 18 different, has a manual. Which one of those do you have? It could be, and probalby is a KX-TA series 624 or 824, but it could be a TAW, KX-T, KX-TD, or KX-TDA.

The user manual (or Operations (OM) Manual) is more specific to the box you have, so try to find the part number and post back.

Carl

I can't tell if the 7565 is an Analog or digital set, but the programming is done in the sytsem. If it's a TA series box, the program is in system program 604. If it's a TD series, the program is either 004 or 003, I don't remember exactly which.

Both require you to be in SYSTEM programming which is usually done from the phone connected to Jack 01 (ext 101). A TD can also be programmed from the MANAGER's set.

Carl

Somewhere you should have a programming and operating manual for your phone system. Typically in a Panasonic you turn on CALL WAITING for both Intercom and Outside lines via a code you dial at each phone on the intercom (7311# 7321# for a TA).

This is assuming that the lines are already programmed to ring at the phone.

Carl

go to www.wedophones.com click on manuals then find your modle

This is Tahir ansari from indore, I have faced problem of epbx machine, problem is that, I have 15 extention in my epbx & 3 telephone line connected in my epbx, now all 15 extention are used by me but 3 telephone line are not running my extention why ?