jabber inside campus - required ports

[bluesea2010]

Hi,

If i have vcs expressway -c and e and IM and presence unity  , 

The below article  describes about the ports required .

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/10_6/planning-guide/CJAB_BK_CD3376A0_00_cisco-jabber-106-planning-guide/CJAB_BK_CD3376A0_00_cisco-jabber-planning-guide_chapter_011.html#CJAB_RF_P657A5CA_00

Why we have to give access to cucm if we have expressway-c , 

And  please  give me the link  for port requirement to  IM and Presence and if there is any other required ports 

Thanks 

[Jaime Valencia]

The guide provides all the basic ports that are required for an on-prem deployment, and states other guides might need to be reviewed for additional ports, if you're using MRA, it clearly states:

For information about port usage for Expressway for Mobile and Remote Access, see Cisco Expressway IP Port Usage for Firewall Traversal.