ADTRAN MX2800 User Manual page 128

Appendix D. Glossary
SR
data set ready. A signal on the DTE interface that indicates if a connection exists
and if the devices are ready to start handshaking control signals so communica-
tions can begin.
synchronous
Communications in which the timing is achieved by sharing a single clock. Each
end of the transmission synchronizes itself with the use of clocks and informa-
tion sent along with the transmitted data.
T1
Transmission rates of 1.544 Mbps are available on T1 communication lines. Also
referred to as digital signal level 1 (DS-1). See also E1.
T3
Transmission rates of 44.736 Mbps are available on T3 communication lines. Also
referred to as digital signal level 3 (DS-3).
TDM
time division multiplexing. A technique for transmitting two or more signals at
the same time over a single communication medium. This is accomplished by
allocating channels to the bandwidth for specific increments of time.
Telnet
The standard TCP/IP remote login protocol specified in RFC-854.
transceiver
A combination of transmitter and receiver providing both output and input
interfaces within a single device.
transmission
The signaling of data over telecommunications channels.
V.35
A standard for trunk interface between a network access device and a packet
network that defines signaling for data rates greater than 19.2 kbps.
VT 100
A non-intelligent terminal or terminal emulation mode used for asynchronous
communications. Used to configure the MX2800.
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