PANASONIC COMPATIBILITY

What was the point of buying a job lot if you didn't have any idea if they were compatible? Wouldn't it be better to think it through first.

Did you not post this question last week? Brian

KX-70xx, KX-T77xx all work on KX-TA as well as the newer KX-TDA Digital Hybrid Systems.

You need the right line cord for them though, and then the sockets wired correctly.

I don't think /either/ 'standard' RJ-BT line cord works.

Can't afford to miss a potential bargain :)

Actually I've done it myself, oddly enough on Panasonic telephone kit! I use an old DBS (Digital Business System) - the first series not the later one, and it's hybrid analogue / digital. I bought a job lot of remote door lock operators and voice announce units. Some were and some were not compatible !

Andrew

Oh dear. According to all the websites - and I spent 4 days checking - they WERE compatible.

Not everybody is as stupid as you Pam.

No

On 18:18 9 Oct 2018, The Natural Philosopher wrote in news:ppintn$m1l$ snipped-for-privacy@dont-email.me:

Your foolishness is that you bought them but you can't make them work.

Know your limitations and leave this sort of thing to someone who knows what they're doing.

Maybe tomorrow evening I'll bell out a known good Panasonic keyphone cord and post the pin mapping if you still have problems. I still think the problem is the cord.

Have you tried the phones on all ports and with an extension socket (no ringing cap or resistor)? Any master socket components WILL disable the datastream.

Owain

the phones have 4 wires in this case wired to a BT plug.

I have connected te 4 wires coming out of the PABX to them, in every possible way. They do not work.

well about 5.

and with an extension socket (no ringing cap or resistor)?

yep. Ive been cutting components out of a gash socket and punching down the structured cabling.

Only thing I left was the resistor.

Any master socket components WILL disable the datastream.

I dont even get an off hook tone.

My foolishness was in believing that the online data from panasonic that said they would work, was true, and that wiring them up in accordance with the the spec would work.

hahah. I am that man.

Perhaps they are faulty, which is why they were a job lot ????

No. they are clearly out of an office/small business

No, but the best guess would be 3 & 4 on the RJ11, the middle two pins of the 'six' would go to 2 and 5 on the BT431A plug

But, because of the numbering screw up between plug and socket circa 1980 it could be 3 & 4 on the RJ11 to 5 and 2 on the BT431A

Gotta smile that someone who claims to have all the electronics experience that Turnip does can't get a phone working.

That resistor between 3 and 5 will disable the datastream (I assume, I've never actually tried it wired wrong)

You won't get dialling tone out of a keyphone with a faulty data pair as the hookswitch is data controlled not looping the line.

Correctly wired, a parallel single line telephone will light the Intercom light on the keyphone when going off-hook on the SLT (and the keyphone display will show the digits dialled by the SLT, even if the SLT is LD)

Owain

Ah - now that maye be intersting.

Currently I have 2 and 5 working for ANALOGUE phones correcyly with et ring being reconstituted via a master socket. I had assumed they would use the same pair for difital,. so I have simplye added te wiores that wer left over on te PABX to 3 & 4, qanmd tried all polarity combiantions.

Are you saying that the wires that go to 2 & 5 on the analogue system, need to go to 3 & 4 on the keyphone?

OK, with The iother mikes poast thats two thinsg to try - completely removing all mastering components on the socket and maybe moving the pairs around as well as changing polarity.

I'll try both of those and see what happens...

On 14:02 10 Oct 2018, "Dave Plowman (News)" wrote in news: snipped-for-privacy@davenoise.co.uk:

In a way, I'm surprised TNP isn't posting about some deep and meaningful electronics theory and how the phone designers were too stupid, lazy or incompetent to design something he could use without getting help.