No, I have not looked at the Cisco 7931 because there may or may not be a table, and they want a room-integrated system (room is big, can hold up to 50 people).
I have been a Cisco Select partner for SMB-Voice for almost 5 years, and if every change I made to a UC500 in CLI deemed it out of the support scope, then not one of the UC500 systems I installed are "supported". Don't get me wrong - I use CCA with all of them without a hitch, but I know I walk a fine line. The problem with this proposal I am working on is that the client wants the price of the UC540, with the features of the enterprise cisco UC. They want Jabber, not just in the office, but outside it as well, which may or may not work depending on who I talk to at Cisco. They want and need a true room-integrated audio conferencing system that requires a third-party system, which is not an issue with a big UC, but is an issue with the little UC540. I have reached out to my Cisco contacts, but its an ever-changing group, and they are not technical people. I can't tell you who my Cisco AM is. I think they did away with assigning those to Select partners. Thats why I am posting to the forum trying to find some answers..
Sorry, I feel I sound a big cynical. I feel I am going to lose this whole proposal. I just can't make the Cisco pieces fit. I am very much open to any ideas and suggestions.