The Panasonic V92 MDC Modem is a 56K dial-up modem that uses the V.92 communication standard, which is an update to the previous V.90 standard. It allows for faster dial-up internet connections, with features like modem-on-hold (enabling you to receive phone calls while connected to the internet) and faster connection speeds for data transmission.

The MDC stands for Modem Data Communication, and this modem is typically used for dial-up internet connections or other low-speed data transmission purposes, often in places where broadband services like DSL or cable are not available.