when I try to start a conference call with my jabber client in deskphone mode (!), the third called phone rings for half a second and then the call is dropped. The call between the 2 "starting callers" can be continued.
Starting conference calls with our deskphones is possible without any problems.
We're running a CUCM, CUC and a CIMP in version 10.5. Jabber is version 9.7.2..