Steve Neiderman is the protocol guy, (E40-3-42C, wade@mit.edu, 235-3955). He works for Tim McGovern (TJM@mit.edu, 253-0505) in the DCNS (Distributing Computing and Network Services) department.
See the protocol spec as captured from TechInfo itself on 18/June/92. (Beware: this may change.)
To try out techinfo, you can telnet to techinfo.mit.edu.
Tim