Twilio has now enabled programmable voice participants in video group rooms, allowing customers to add callers from SIP or the PSTN, improving collaboration and call quality. With just a few lines of code, developers can receive phone calls to a Video Group Room from any Twilio phone number, make outbound calls to add Participants, and enable PSTN/SIP participants to share their audio with other connected participants. A new TwiML verb `<Connect>` has been introduced to connect PSTN/SIP callers to Twilio Video Group Rooms, making it easier for developers to integrate this feature into their applications. Pricing for these connections will be based on Programmable Voice rates and Video Group Rooms Participant minute charges. This feature is available today and can be implemented using Twilio's server-side Helper libraries.