Hi,
you may refer to the link below:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/9_1_1/CUCM_BK_T2CA6EDE_00_tcp-port-usage-guide-91/CUCM_BK_T2CA6EDE_00_tcp-port-usage-guide-91_chapter_01.html
Go through the table 6 " Signaling, Media, and Other Communication Between Phones and Cisco Unified Communications Manager "
Aseem
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