I have successfuly added CUCM managed CTS 1300 enpoint to TMS and want to make it possible to book with TMSEX but this seems not to work. I got a respone in my mailbox from the TMSXE which said:
The videoconference endpoints have been reserved, but due to limited routing resources, automatic routing could not be set up for your conference. Any external dial-in/out participants added to the conference will not be connected. To ensure that the conference will connect and that routing resources are available, contact your videoconference administrator.
I have some other devices (MX,Profile,...) that also managed by CUCM and added to TMS and with this devices its not a problem to schedule meetings. Only with CTS.