I got a pretty good challenge this week while working on something else. Someone needed to convert a ton of 6945′s to SIP and they don’t have a Communications Manager. I tried to do the conversion with CME…but there are known bugs with that phone and cme. I have found that you have to update the factory default SCCP file…then convert to SIP. What I am working on is getting the proper files and doing the upgrade with just a TFTP server, and no call control component. These phones will be used with a Siemens system utilizing SIP until they get their full Cisco UC solution deployed. I will be posting exact steps once I am successful later. If anybody has any ideas or has done this kind of thing before, any advice would be appreciated.