[VoiceOps] Direct CLEC interconnect - taking the plunge

We are a regional hosted VoIP provider in California. We started as an ISP and moved into becoming a CLEC offering VOIP. As is probably the case with most, we started buying DIDs from wholesale carriers as SIP trunks. The majority of our customers are within a single LATA with a large minority in an adjoining one. We are investigating the feasibility of direct interconnect with the RBOC/ILEC via SS7. I'm interested in pointers/gotchas as well as recommendations of a consultant to help us navigate the maze, both from a political and technical standpoint. Suggestions as what not to do or who not to hire are also welcome. Please feel free to respond on-list or off as you feel appropriate. --