Do I have 208 or 240 volts in my apartment?

I just had a new circuit installed for a dryer. I was told it was 240 volt but
I'm having doubts. Would I be able to tell from the panel? The following is an
excerpt from my building's electrical specifications. The building has 10-20
apartments:
"From a service end box, electrical feeders connect to a service switch which
provides power to the building?s residential systems. The service switch is a
three-phase, four-wire 208/120 volt switch rated for 600 amperes. The service
switch conducts power to the residential electrical meter bank. Each residential
unit is provided with a dedicated feeder Each dedicated feeder then conducts
power at one-phase, three-wire 208/120 volt to local distribution panelboards
located in each residential unit."
Sounds to me like I can only get 208 volts, but if power to my unit is only
provided at one phase, I'm confused as to why it would be 208 volts, which I
thought was a voltage between phases.
Is it even possible for me to have a 240-volt circuit in my unit based on the
above description?