Refer to the exhibit. A company has a Cisco collaboration infrastructure that contains Cisco UCM and Cisco Expressway-C and Expressway-E for Mobile and Remote Access. When the engineer sets up the environment to support B2B calling, they discover that the zone stale between Expressway-C and Cisco UCM failed. What must the STEP Trunk Security Profile setting be changed to in Cisco UCM to resolve the issue?
An engineer learns from an end user that calls from outside the company are not being received. Calls are being made to other businesses outside of the company on video using URL addresses. The change management log shows no changes in the configuration of the collaboration solutions. The engineer examines the endpoint, which seems to be registered to the Cisco UCM, and the SIP trunk between the Cisco UCM and sees that the Expressway is also up. In addition, the traversal link shows no errors between the Expressways. Which action must the engineer take to troubleshoot this issue?
Which two items are configured when deploying a B2B collaboration solution? (Choose two.)
Which technique can be used to have media flow directly between two endpoints that have a NAT between them?
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?
Which 16-digit number is unique to a serial number and is used to enable the system?
What is the benefit of configuring ICE, TURN and STUN in a Cisco Unified Collaboration environment?
TESTED 02 Oct 2025
