Which video-bridging solution supports single-screen units and multiscreen systems and keeps multiscreen units grouped together logically during a call?

Cisco MCU is an older bridging product that lacks native support for logically grouping multiscreen TelePresence systems as a single participant.

Cisco PVDM is a hardware digital signal processor module used for voice and video transcoding, not a standalone video-bridging solution.

Cisco TelePresence Server is a scalable video conferencing bridge capable of handling single-screen endpoints alongside multiscreen immersive TelePresence systems. It provides a logical grouping feature that keeps all screens of a multiscreen unit joined as one coherent participant view during a call, preventing them from being treated as separate attendees.

Cisco TMS (TelePresence Management Suite) is a scheduling and management platform for TelePresence infrastructure, not a multipoint video bridge.

Cisco TCS (TelePresence Content Server) is a recording and streaming appliance for capturing meetings, not a multipoint video conferencing bridge.