Conf. Call Issues!!!

Just this morning I was on a call and was disconnected. That person called back and finished my conversation.

Here is the problem. I can't make an outgoing call now. Everytime I pull soemones name up to call them, it asks me if I want to conference them in and I can't make an outgoing calls.

How do I get back to the normal call out feature. Is there a application I need to get back into?

Any help would be great.

Thanks,

PB