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Cisco Bug: CSCvr93559 - Endpoints send a STUN packet as the first packet when setting up media

Last Modified

Jan 15, 2020

Products (1)

  • Cisco Telepresence Integrator C Series

Known Affected Releases


Description (partial)

Some work was made and integrated as of CE9.3.0 in which EPs will send a STUN packet when setting up media.
Looks like this change has not been properly documented.

Customers who have a setup like (Endpoint >> RTP >> Firewall VPN >> RTP >> Endpoint) may have media issues when upgrading from CE8.x to CE9.3.x  if STUN is not properly enabled in FW.
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