I want to know that is it possible that deploy UCM as many clusters and those cluster work together?
If it is possible, please show the deployment architecture? and how the JTAPI client access it (how to build the Provider connection string)?
You can have multiple CUCM clusters trunked together with a SIP trunk (depending on geographic proximity) or you can also install an optional SME cluster for dial plan consolidation etc.
Review the below chapter of SRND:http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab10/collab10/models.html#pgfId-1043850
Also look at here: