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For Activation/Connection fails issues:

• The Webex endpoint must have an Internet connection.
• If the device is not paired when you activate the endpoint, you can still pair it if you create a local access account on the device to authenticate the Touch Device. Otherwise; you will need to factory reset the endpoint, pair the Touch Device, and then reactivate it on Webex.
• Make sure the correct ports are open (outbound) on the firewall.

The Protocol/Ports range for endpoint for Webex:

• RTP port 5004
• UDP is always preferred if both ports are open
• To check if ports are opened properly, and test your network performance, use the following tool:
  https://mediatest.ciscospark.com
  Note: Some browsers may not be supported.
• Make sure the Activation Code is correct and valid.
• The activation code is one time use only. If the system is factory reset a new Activation code must be generated. Codes generated in the Control Hub admin portal are valid for up to 7 days, then expire.
  • The administrator may generate a new activation code for help.
• Make sure the Product ID (PID) of the endpoint matches the endpoint you are activating; for example: CTS-SX10N-K9 (CTS-SX10NCODEC).
• For more information on Cisco Telepresence CE Software Release Notes (CE8), see: http://www.cisco.com/c/dam/en/us/td/docs/telepresence/endpoint/software/ce8/release-notes/ce-software-release-notes-ce8.pdf

• For more information on Network requirements, see: Network Requirements for Webex Services