Gsm station hardware question

Hello all,
I want to be able to connect my mobile phone to my usrp station, before
I go into compiling anything I would like to know what are the hardware
requirements to do so.

I will use usrp with DBSRX daughter board. Do I need something else? How
many DBSRXs do i need ( one or two) just to perform the connection
without making any actual calls or something like that?

Thanks in advance