350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

Question

Which two media-encryption settings should be used when configuring SRTP between Cisco UCM and Cisco VCS Expressway?

Choose two

A optional
B pass-through
C priority
D mandatory
E none

Explanation

Cisco UCM and VCS/Expressway use compatible media-encryption signaling for the mandatory and none modes. Mandatory requires encrypted SRTP media with no unencrypted fallback, while none disallows media encryption; best-effort/optional mode has documented signaling interoperability differences between the platforms.

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Secure RTP between CUCM and VCS or Expressway Configuration Example

350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

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