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Products Portable Radios Mobile Radios Repeaters BroadbandAccessoriesAccessories Service Contacts Resources |
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Wireless Networking Glossary
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R
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| Radio Frequency | Electro-magnetic radiation having a frequency in the range used for telecommunications, greater than that of the highest audio-frequency and less than that of the shortest infra-red waves. |
| Radio Interface | The interface between an MS and a BS |
| Radio, access point | Paired with radio, subscriber point; at network access point |
| Radio, subscriber point | Paired with radio, access point; at customer premises |
| RADIUS | Remote Authentication Dial-In User Service. An internet user authentication system. See IETF RFC 2138, 2139 and AAA |
| RAN | Radio Access Network |
| RAND | Random number used for authentication purposes |
| RBOC | Regional Bell operating company. 4 ILECs, created post-AT&T breakup in 1983: Verizon, Qwest, BellSouth and SBC. Compete with CLECs. |
| Reed-Solomon | A type of FEC |
| RF | Radio frequency. Refers to alternating current (AC) having characteristics such that, if the current is input to antenna, an EM field is generated suitable for wireless broadcasting and/or communications. |
| RFC | Request For Comment. A series of notes about the Internet issued by IETF and started in 1969. Anyone can submit an RFC and, if it gains enough interest, it may evolve into an Internet standard. An RFC number designates each RFC. Once published, an RFC never changes. Modifications to an original RFC are assigned a new RFC number. For example, 1212 MIB II and 1213 MIB II. |
| RFI | Radio Frequency Interference |
| RFID | Radio Frequency Identification. A small chip that is designed to allow the identification and tracking of an object (e.g.manufactured item, airline bag). |
| RFP | Request for Proposal |
| Riser | Area in a building, generally a vertical tunnel, that supports building services. These services may include air handling, plumbing, and wiring. |
| RIP | The Routing Information Protocol (RIP) is one of the most commonly used Interior Gateway Protocols on internal networks (and to a lesser extent, the internet), which helps routers dynamically adapt to changes of network connections by communicating information about which networks each router can reach and how far away those networks are. |
| RJ11 | Registered Jack-11. Most common household and office telephone jack. |
| RJ21 | Specification describing cable connector with 50 pins. Many forms: male and female, straight or 90 degree, right or left facing cable exit, shielded or unshielded. |
| RJ45 | Registered Jack-45. Telephone jack. Single-line phone jack for digital transmission over ordinary phone wire, either untwisted or twisted. |
| RJ48c | 8-pin modular connector, may come in different styles to accommodate various cable types. Originally designed for 1.544Mbps serial digital services (T1) but is now commonly used as connector for Ethernet, other LAN and WAN cabling. |
| RLEC | Rural LEC |
| RMON | Remote Monitoring of Network. Management protocol allowing network information to be gathered at single workstation. |
| Router | In packet-switched networks such as the Internet, a device or, in some cases, software in a computer that determines next network point to which packet should be forwarded toward destination. Forwards and filters traffic between networks based on network layer info and internal LAN address in the data, and on routing tables maintained by the router. |
| RS232C interface | Long-established standard ("C" = current version) that describes physical interface and protocol for relatively low-speed serial data communication between computers and related devices. |
| RSS | Received Signal Strength. A measure of the strength of a radio signal |
| RSSI | Received Signal Strength Indication. Used to determine when a handoff should be attempted |
| RTU | Remote Terminal Unit |
| RTP | The Real-time Transport Protocol (or RTP) was developed by the Audio-Video Transport Working Group of the IETF and published in 1996 as RFC 1889 |
| R-UIM | Removable UIM |
| RX | Abbreviation for receive or receiver |
| RZ | Return to Zero |