For on-premises SIP-based call control products such as Cisco Unified CM, a SIP session is established through a border controller such as Expressway C & E, or CUBE SBC for calls to and from the Webex Cloud.įor details on the specific network requirements for the Webex Calling service see: Īll cloud registered Webex apps and Webex Room devices initiate outbound connections only. Webex Room devices, Cisco IP Phones, and 3rd party products can join Webex Meetings using SIP. The Webex Calling service and on-premises call control products such as Cisco Unified CM use SIP as their call control protocol. Webex cloud and on-premises call control registered devices using SIP The Webex app can also use the SIP protocol to join Webex meetings, but this is subject to the user either being called via their SIP address or choosing to dial a SIP URL to join a meeting (rather than use the functionality of the meeting native to the Webex app). The Webex App uses HTTPS signaling for Webex messaging and meeting services.

This feature allows Webex devices to be administered via Webex Control Hub and to participate in Webex Meetings using HTTPS signaling (for details see ). On-premises SIP registered Webex devices can also use HTTPS signaling if the Webex Edge for devices feature is enabled.Cloud registered Webex Room devices use HTTPS signaling for all Webex services.All cloud registered Webex apps and devices use HTTPS to communicate with Webex messaging and meetings services:

Cisco webex mac interface