The Digital Business Phone [Alpha] HX Series supports both INS Net64 and INS Net1500, enabling construction of a high-speed, high-quality information network. There are two types of main units: the S type that can accommodate up to 16 external lines and 60 extensions and the P type that can accommodate up to 48 external lines and 160 extensions. There are diversified options available to each type of main unit, such as PHS supported digital system cordless phones and the advanced voice mail unit that can record telephone conversations as they are and send them as messages. In addition, the [alpha]LAN bridge can connect LANs together using [alpha] bus wiring, enabling information sharing in the company and information exchange with remote places.