Polycom DOC2560C - Manual (Page 15)

Polycom RMX 1500/2000/4000 Getting Started Guide
1-5
Telepresence Mode
TPX (Telepresence) and RPX (Realpresence) room systems are configured
with high definition cameras and displays that are set up to ensure that all
participants share a sense of being in the same room.
The RMX enables Telepresence Rooms to connect to conferences where
point-to-point connections cannot be used.
Table 1-1 Continuous Presence – Video Layouts (Continued)