The 60T is not on the network so I don't know how you could access ANY network resources for a central directory.
This is an off the wall shot, because I just started fiddling with my 60 HFA, but you can connect a memory stick. If it's possible to copy that info to a memory stick from one phone and then when you hit each phone all you have to do is copy it on, that might speed it up. Make sure if you plug in the memory stick you use a USB extension cable so you don't wreck the dongle.
I haven't had time to mess with it yet, but I am wondering if I can use it to copy my logo, so I will be checking it out.