... (commercial buildings, residential buildings, hotels, and etc.) without new wiring. IV24 is a 24-port VDSL switch based on Quadrature Amplitude ... and sends the voice traffic to the PSTN. The IV24 supports up to 100/50Mbps for both downstream and upstream ... With a broad array of fully integrated, advanced technologies, the IV24 enable service providers and system administrators to affordably build up ...