Question about Panasonic KX-T7420 Corded Phone

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I have a Kx-t7420 panasonic phone system. I have three of my phones that go directly to line 2. no idea why. Can I change this? Also there is so much noise on line 2 that I cannot hear. Is this something in the programing.

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  • Panasonic Master
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Actually, you have a Panasonic TD phone system and a 7420 phone, but no matter. The feature you have is probably "idle line preference" or "preferred Line Assignment-Outgoing". In TD systems by default, you select lines from highest to lowest. If you only have 2 lines and PLA is set, you get line 2 then line 1. You can change it to get line 1 first, or chage the trunk access order. The first is something you can do from each phone, the second requires access to system programming. The bad thing about the first solution is if line 1 is busy, you won't get any line. The second will give you the entire trunk group.

Anyway, from each phone without picking up the handset, press PROGRAM 99 and dial 1301 STORE. That will give you line 1 when you pick up the handset. Just so you know or can change it, 11 is none, 12 is idle line, 13xx is specific line and 1+the intercom is intercom. Pick up the handset and drop it back down to exit programming.

As far as the noisy line, it's probably a central office issue. It's hard to test as that line is the outer pair of the jack that plugs into the phone sytsem (RJ-14 pair 2), but you can probably take a regular phone and test it at the demarc point.

Carl

Posted on Jul 14, 2010

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You have to do this from each line and intercom you want to change.

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1 Answer

Hi: I have a Panasonic KX-T7420 phone. When one of the incoming lines is ringing and I pick up the handset, it picks up the intercom and not the incoming line. Is there a way to get the thing to answer...


There are 2 things that would prevent you from being able to answer a ringing phone by picking up the handset. Your phone has to be ringing, and you need to set preferred line ringing on incoming calls.

The second part is easy. Press PROGRAM 99 and dial 22 STORE on your phone. Now when a call rings on your phone you can pick it up. If you can't, then your phone is not ringing.

Ringing is set in system programming.

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1 Answer

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There is no such thing as correctly plugging an analog caller ID box into a digital phone line.

CID display comes from a TD-193 card mounted in the Key Service Unit and it only displays on Panasonic system display phones designed to work on a TD system. The only system that passes CID through to stations is a TA-824 and certain models of TDA-s that have special analog extension cards.

You can use the analog box, but you have to bring the line from in front of the system to the CID box.

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Reply and we can take this the next step.

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