How is the communication routed in a Hybrid deployment so that people on Cisco Cloud-Based IM are able to communicate with Cisco Jabber users in the on-premises environment?

Question

Options

• AThe Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the
• BThe Expressway-E located in the DMZ establishes a connection with the Cisco Webex Cloud to
• CThe Cisco Unified IM and Presence server establishes a connection using the outgoing path
• DThe Cisco UC server establishes a connection using the outgoing path through the Cisco

• A
  88% (30)
• B
  6% (2)
• C
  3% (1)
• D
  3% (1)

Explanation

In a Cisco Hybrid deployment, the Expressway-C (located inside the corporate network) establishes an outbound connection directly to the Cisco Webex Cloud. This allows the on-premises IM and Presence environment to interoperate with cloud-based Webex IM users without requiring inbound firewall rules. The Expressway-C acts as a federation bridge, routing messages between the internal CUCM/IM&P infrastructure and the Webex Cloud over this outbound traversal tunnel. The Expressway-E is used for MRA (external device registration), not for Webex Hybrid IM federation. The IM&P server itself does not directly connect to the cloud.

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