The ROSE X.25 Packet Switch is the most advanced network level package for the TNC-2 (and Clones) with support for the PacComm DR-200 Dual port, and soon 4 port operation. The ROSE Switch also supports asynchronous packet on the RS-232 port of most TNCs, which can either be used over the air or tied back-to-back with other ROSE Switches. The ROSE Switch is the only Amateur Networking package based upon the International Standard protocols, as defined by CCITT and ISO. The ROSE Switch fully conforms to FCC identification requirements, and does not waste channel bandwidth with needless broadcasts or beacons and has lower protocol overhead increasing actual data throughput.