try reversing the polarity of the CO line as they come into the Panasonic, also check the incoming voltage on the incoming lines.
can you make outgoing calls on the lines?

I would suggest that you have an independant technician test your lines at your network boundry, you can't always trust a carrier(phone company)to admit to a fault.
if your switch works fine at other sites then you have to assume that there is something specific to your building that is affecting the operation of the 1232.

I tried the polarity and it did not work.  Outgoing calls work fine.  I notice if it is going to work at all, it will be after the incoming line is disconnected for a few minutes and then connected up again.  It will work one time and then back to the seize and droping.  I will check ring voltage and frequency .  The switch has been working several years with no problem.  This ma have something to do with wet cable, I am in the west part of Texas and it is usually very dry.  There has been a lot of rain lately and the ground is wet.  Still don't know why this would not affect the Toshiba just like the Panasonics.  I thank you very much for the response.

Check your ground I understand that it been in for few years ground could have chance .

Good tip, I have not done that. will do that tomorrow. Thanks

I agree with BTBZ, it could be an earth issue.

I have hundreds of TD systems out there ungounded and have had the line tipped over and not had the problems you have
discribed you either have a loopcross on the incomming line or you have a faulty alarm panel or inside wiring problems

He said all lines not just one line. If  that the case try hooking  one line at time also ext at the ksu to test the system.

Cwc3, why would a compentant Tech not earth a telephone system.

Thanks for all the help and tips, but nothing has explained this problem.  I will use the panasonic in another location and leave the Toshiba in place.  Don't have the time to work on this any more.  If anyone ever has the same problem (unlikely as it may be) please post it.
Thanks again

it's not required the ksu is grounded through the
third prong !!

Even though the earth does come from the third prong, say the system has battery backup and becomes unplugged from the wall??

Where does the earth go then??

the same place the hot and the neutral go....

If you ask the Panasonic Tech support they will tell you to Ground the System , Surely you were awake during that part of the training.

In section 2.2.5 of the manual, it is clearly stated, "You must connect the frame of the main unit to earth"

Quite simply, if you aren't doing that, then its evidence that you have not read the manual.....

Case of the pot calling the kettle black really...

Maybe we have  aunique situation here , but in our location we do not earth systems due to the non coductive nature of the pumice soil. 29 years and never earthed a system yet, may sound foo lhardy , but all systems "float" above earth to avoid ground loops. Even when the country telco was the only company installing PABXs before de-regulation, no earth was the accepted installation

I forgot to say that I was based on Nantuncket Island
for 20 years a virtual floating sandbar and they generated there own electricty for 10 of the 20 years and when ever there
was equipment meltdown it was actually becuase of potential
to ground or seeking a lighting hit because it was hard
grounded .I had two cocot payphones one on a  hard  8 Gauge wire hard ground on it to a ma'bell ground stake  and one didn't and the building took a direct lightning hit guess which one got blown off the wall ...so don't ask me about competent techs ...... I have 200 of those td and 20 11d's
left humming away out with no ground out there and not one complaint.

"If you ask the Panasonic Tech support they will tell you to Ground the System , Surely you were awake during that part of the training." I need your comments like I need a hole in my head!!

Oh dear I think I upset him.

Shaun,

Just because you haven't got a need to earth your system's, doens't really mean anything to the rest of the world.  

Do you think that everybody in the world lives on Nantuncket Island and thus is in the same boat as you??

If all you ever say is "RTFM" or "Are you an authorized dealer," what is the point of posting at all.

Perhap these people have read the manual, and haven't understood it properly.  Your read the manual post is just going to be a waste of everybody's time.

Do you have so much free time to spare that you just sit on this forum and wait for some one to post so you can tell them they're incompetant?

<Insert any of one of your comments here>  Everyone on this site needs your comments like everyone needs a hole in the head.

Awww why can't we all just get along   LOL

if its a td then surly it just a case of doing a loop back from an slt port onto the lines pos ... if it works than its the supplier .if not than its site

peter

I installed the switch at another building Friday.  It has been working fine all weeked and is still working now.  I am sure there is something wrong with the CO lines that both of the Panasonics do not like.  However it is impossible to convince the phone company that it is their problem when the Toshiba switch works, and a butt set will ring.  I just had to buy an extra Panisonic I did not need, and a Toshiba switch I dont think I need.  In other words because I had no way to prove the phone company wrong, it cost me $6000 for 2 phone switchs, and a bunch of Toshiba phones.

Panasonic switches are not very forgiving of loop current.  Did you check yours?

I did measure the ring voltage at 90v and was in the process of measureing ring frenquency when ATT says it does not matter what I measure, lines meet minimum spec.  They will do nothing.  I guess I have been greeted with Bell South AT&T customer service.  I think I will go back and finish the measurements just for my information. Thanks,

Hmmm, I guess the answer is NO.  Check loop current, not ring voltage, not ring frequency.