SIP video devices within the same company can now connect to meetings without being prompted for a host PIN or key. If the meeting host is running late or can't make it, you can join and host the meeting from a video device on WBS39.5 and later sites.
Only SIP TLS-based connections are supported with this feature. SIP TCP and H.323 connections aren’t supported.
Tap Join Webex.
Enter the meeting number and tap Join.