Support phone call to join a meeting room

[lebaudantoine]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.

The current WebConf tool allows users to join a Jitsi meeting room via phone call. In some situations, users may not have internet access and need to join a meeting using a phone number.

How does it work?

WebConf rents SIP Trunk from OVH Telecom. While I'm not entirely sure how it works, it might be this kind of service. I believe it acts as a gateway to the video conference server that supports SIP (Session Initiation Protocol). People call the number provided by the rented SIP Trunk servers from OVH, and then they are redirected to the LiveKit server.

What's SIP Trunk?

SIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities.

Wikipedia

Additionally, SIP supports appears to be necessary for joining a LiveKit room using meeting room hardware, such as Cisco audio and video conference equipment that is installed in physical meeting rooms.

I am not an expert in SIP or SIP Trunking. Although it's not the highest priority, these features would be required to fully replace the existing videoconference tool used by our users.

Describe the solution you'd like
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