Glossary
multiplexing | A method for interleaving several access channels onto a single circuit for transmission |
| over the network. |
node | A connection or switching point on the network. |
| A |
loopback | provider. |
NS | No Signal. A |
OOF | Out Of Frame. An error condition in which frame synchronization bits are in error. A |
| |
OOS | Out of Service. A digital network trouble signal. |
PAD | Packet Assembler/Disassembler. |
| A data network circuit with one control and one tributary device. |
protocol | The rules that govern how devices exchange information on a network. It covers timing, |
| format, error control, and flow control during data transmission. |
PSTN | Public Switched Telephone Network. A network shared among many users who can use |
| telephones to establish connections between two points. |
reset | A reinitialization of the device that occurs at |
RIP | Routing Information Protocol. Specifies the routing protocol used between DSUs. |
RLSD | Receive Line Signal Detect. See CD. |
router | A device that makes decisions about the paths network traffic should take and forwards |
| that traffic to its destination. A router helps achieve interoperability and connectivity |
| between different vendor's equipment, regardless of protocols used. |
| An EIA standard for the |
RTS | Request to Send. An |
| |
RXC | Received Clock. An |
| |
RXD | Received Data. An |
| |
SDLC | Synchronous Data Link Control. A standard data link protocol. |
synchronous | Data transmission that is synchronized by timing signals. Characters are sent at a fixed |
| rate. |
TDM | Time Division Multiplexer. A device that enables the simultaneous transmission of multiple |
| independent data streams into a single |
TM | Test Mode. An |
TXC | Transmit Clock. An |
| |
TXD | Transmit Data. An |
| |
V.35 | |
WAN | Wide Area Network. A network that operates over long distances and spans a relatively |
| large geographic area (e.g., a country). |
November 1997 |