The other day I needed to run a conference call for a conference I have been working on for my church.  Since everyone had cleared out of my office, I decided to test the conferencing capability by calling into my iPhone from my coworkers’ handsets.  The iPhone could handle 5 other lines in one conference.  The 6th call could still be answered by putting the conference line on hold…just can’t be added to the teleconference.  This is really cool for a personal cell phone!