Handling inbound calls while dialed-up

[Michael O'Donnell]

A coworker mentions that he's pretty sure he saw his
neighbor taking a call using his peecee while it was
dialed up, and he thinks he saw a dialog box come up to
indicate the caller-ID data and such, and he's pretty
sure that the peecee was still actively being used while
the conversation was underway.  If true, this would
indicate something more involved than modem-on-hold...