Question 1 of 30
A company is implementing a new Cisco Collaboration solution that requires the integration of multiple endpoints, including Cisco Webex devices and third-party SIP endpoints. During the execution phase, the network engineer must validate the configuration to ensure that all devices can communicate effectively. If the engineer discovers that some endpoints are unable to register with the Cisco Unified Communications Manager (CUCM), which of the following steps should be prioritized to troubleshoot the issue effectively?
Verify the SIP trunk configuration between CUCM and the third-party SIP endpoints to ensure that the correct codecs and transport protocols are being used.
Check the network bandwidth to ensure that there is sufficient capacity for all endpoints to register simultaneously.
Review the firewall settings to confirm that the necessary ports for SIP signaling are open and not being blocked.
Examine the endpoint firmware versions to ensure they are compatible with the CUCM version being used.

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