
RAI (Remote Alarm Indication) ◆ PRI alarm, also known as Yellow signal. This alarm indicates a carrier failure.
RBOC (Regional Bell Operating Company) ◆ Thisreferstotheoriginal seven regional telephone companies created by the AT& T divesti- ture: Nynex, Bell Atlantic, Bell South, Southwestern Bell, US West, Pacific Telesis and Ameritech.
RD (Received Data) ◆
REN (Ringer Equivalence Number) ◆ A standard requirement of the FCC. For devices such as a telephone or answering machine. The REN requirement can be found on a label on the bottom of the analog device.
Repeater ◆ Device that acts as an amplifier. Also known as a Line Extender. This device is needed when the distance between the phone company's Central Office and your premises exceeds distance or dB loss limits.
RFC (Request for Comment) ◆ IETF (Internet Engineering Task Force) documents that contain proposed standards and specifications. RFCs can be either approved, or simply archived as historical recom- mendations.
RI (Ring Indicator) ◆
RIP (Routing Information Protocol) ◆ Within IP networks, RIP is an interior gateway protocol used by routers and host systems to exchange information about reachable networks. RIP uses a
Router ◆ Hardware device that connects two or more networks. A router determines where the destination computer is located, and then finds the best way to get there.
Routing ◆ Selecting the path to be taken by packets as they traverse the network.
Routing tables ◆ Stored in voice/data switches or routers to determine which of several possible paths will be taken through the net- work.
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