Excessive static on the line

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 ...

Is it possible that the DSL line is filtered outside or the phone jack is defective? Has anything changed recently? Try isolating the DECT 6.0 phone system. Otherwise, consider replacing it with a 5.8 GHz system. I have a the same system (the Panasonic KX-TGA402N -- the three pack, a old 900 MHz cordless answering phone, several Bluetooth devices, and a 2.4 GHz wireless router (Linksys WRT54G2.) I have no noise problem. If you can't determine the source of the interference, I assume you already replaced the phone system.

You may download the KX-TGA931 manual from http://shop.panasonic.com/shop/model/KX-TGA931T?support

The number of rings is controlled by the answering machine or voicemail system on your phone line. It cannot be changed from the handset. Please refer to the documentation for whatever answering machine or voicemail system you have.

If you require further assistance with the answering machine or voicemail system, please tell us the make and model.

thats an hardware fail , you need a service shop to fix it

Thanks for visiting FixYa!

I believe the number you've provided may be the part number to the charging base which the phone sits in. Check to make sure. Panasonic phones that use this base (usually) begin with the letters KX-TG

You may have a KX-TG8521 or a KX-TG8523. Again, please verify the exact phone model you have then re-post a NEW question with the correct phone model. Thanks!

Hi, try to fixed the paper cassette tray and the cover it might sensing empty paper.

I have the same problem with the key pad beep during telephone
conversations and I hace a Uniden 5.8ghz phone.
So its not just panasonic 5.8 ghz phones that do the beeping.

Is your base near a computer or other electronics? Also, make sure your microwave is not on. I get static if I do any of those things.

Does the static stay on the line after the called party answers?Is the static on incoming and outgoing calls on any phone?if the answer is yes to the above questions,check your house jacks for corrosion.There are a number of things that can cause static inside your house and outside.From the interface box on your house where the wires come from a pole or from under ground is phone company problem.From the box into the house is your problem,so the easy solution is to make the phone company come out and determine from what side the static is coming from.There is usually no charge for this unless you have them come into your house if the problem is there.
tk46

Try connecting line 2 where 1 is connected. If there is no static it is youre system ie phone itself. If there is static there is definately a problem with youre line. Static can usually be attributed to old lines that the moisture barrier has been compramised. If the line is under youre house or in the walls you may have to pay for it. But if it is the companys line it is their issue.