The external ISDN modem T30 is specially designed for high-speed Internet access, Intranet access, and end-to-end data transfer in a SOHO (Small Office and Home Office) environment. It provides a high-speed RS232C port for connecting PC, Macintosh systems, workstations, and similar servers and routers. The RS232C port can work at rates of up to 230.4 Kbps.??What is more, the ISDN modem offers two analog ports for attaching traditional equipment like phone and G3 Fax to ISDN. This support allows you to maintain connectivity with the existing telephone network. And a set of Internet protocols and specific features were implemented for simultaneous talking and browsing applications. In short, the ISDN modem is very valuable and worth using.