Let me see if I'm understanding what you're doing.  You have an 8410 that is having the above problem, you plug it into a jack that is wired for an 8434 or an 8411 and the problem goes away?  Is that correct?  

First step I would take is to wire a jack directly off the wiring field from the switch to rule out a house cable problem.  

If phone still has same problem the second step would be to change the phone type on one of the ports configured for an 8434 to an 8410 and plug in the problem phone.  If still the same problem I'd plug the 8434 in and see if it does the same thing.

If both phones have same problem I'd look into the way my system configures the 8410, if only the 8410 has the problem I'd say I bought a bad lot of phones.

One thing to think about is if 140 represents all the 8410s plugged into the system you might just plug in an 8434 to a port configured for an 8410 and eliminate the first step and the first half of the second.

I'M WORDERING IF THIS COULD BE AN ISSUE OF 2-WIRE PHONES AND 4-WIRE PHONES?

Kim,

If you mean by BLARES a real loud dail-tone and the phone will not let you dail a number (in- or external) the 84xx phone is set for the wrong region.

Not only does a the 84xx series support 2 & 4-wire connections. The can be used worldwide cause you can change form A-law to Mu-Law (or vise-versa).

To change the settings on the phone you can download settings from the DEFINITY. From an other phone you dail the Refresh Terminal Parameters Acces Code followed by the extension number you wish to download.
(the Acces Code can be found in the DEFINITY using the command Display Feature-acces-codes and look at the top of page 3)

Now I get the impression from your question you might be testing on two different DEFINITY systems. Then you should check if all the settingson both systems are the same. You should look atdisplay terminal-parameters 8400 on both systems and compare.




I hope this helps, please let me know if it helped