I am trying to nail down some test cases for the 3M Standard Interchange Protocol (SIP) and almost everything I understand about SIP comes from one of the smart technical folks at Userful <http://www.userful.com> and an apparently "confidential" document from 3M <http://www.aneg-dv.de/allegro/sip2/sip2_developers_guide.pdf>. Our booking system uses SQL and LDAP over SSL, but there's a lot of interest in tapping into SIP and I have put together a "transformer", in Cocoon parlance, to talk to SIP targets. So far, it works with a SIRSI and a Dynix target, but I would be really interested in hearing from you if: 1) you have access to SIP from another ILS vendor 2) you have worked with SIP and/or have looked at vendor documentation on their/3M's implementation I don't think anyone supports NCIP yet but that would be fun to try too. NCIP is XML-based and should be straight-forward to implement but I have put it to one side until I know whether it can actually be used with a real system. If you have a self-check machine, you likely have SIP access, though there seems to be all sorts of issues in using it directly in a third-party application. art