 (Really Simple Syndication) At Divestiture in 1984, the Justice Depart- A series of software standards that auto- ment organized the 22 Bell telephone com- mates feeding updates from news sites such panies into seven Regional Bell Operating as Forbes.com and blogs to other sites and Companies. As a result of mergers and name users. The use of RSS means that people changes, the former RBOCs are now part of don't have to continually check to see news AT&T, CenturyLink, or Verizon. headlines or updates to blogs. reverse channel In cable TV systems, this carries signals from RTMP (Real-Time Messaging Protocol) the customer to the cable operator's equip- A realtime streaming protocol developed by ment. Reverse channels are required for Adobe for using Flash servers to improve Internet access, on-demand TV, and VoIP. streamed audio, video, and data over the Internet. It is now used with other Adobe RFID (Radio Frequency Identification) programs. According to Adobe, most of the A non-line-of-sight wireless technology used RTMP specifications are open to developers to control, detect, and track objects. Two to create applications compatible with Adobe common applications are merchandise track- Flash Player. ing and automated tollbooth collection. RTP (Real-Time Transport Protocol) roaming An IETF standardized protocol for transmit- The capability in mobile networks to use the ting multimedia in IP networks. RTP is used same handset on another carrier's network. for the "bearer" channels, the actual voice, Carriers set up roaming agreements to define video, and image content. terms such as per-minute fees that carriers charge one another. SDH (Synchronous Digital Hierarchy) A world standard of synchronous opti- router cal speeds. The basic SDH speed starts at A device with routing intelligence that con- 155Mbps, also called STM-1 (Synchronous nects local and remote networks together. Routers are also used to forward packets in Transport Mode-1) in Europe. SONET is a the Internet. subset of SDH. RPKI (Resource Public-Key 