A computer telephony integration (CTI) route point designates a virtual device that can receive multiple, simultaneous calls for application-controlled redirection.
Unless there is an application controlling the CTI route points/ports, they won't show registered on CUCM.
For more information, please refer to the following document
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/7_1_2/ccmcfg/bccm-712-cm/b06ctirp.html