Sprint Stock TP goes into conference by itself

[skywalkr2]

I've been having this problem for awhile now and its driving my wife nuts (and therefore its now a huge issue). I'll be having a conversation and then the phone just goes "dead". I look at the screen and it has put my current converstaion on hold and is dialing another phone number... usually the last phone number I had dialed. I assume its trying to go into conference calling.

Anyone have any clue how this is happening? Any ideas on a solution to fix? Because when it does this I have no idea how to get back to the original call and I just have to hit end ... which ends all calls... even the original one.

Please help. I still have several months remaining before Sprint will allow me to upgrade.