Quick Eagle Networks DL3800E - Manual (Page 157)

Glossary G-11
G
polarity
Any condition where there are two opposing charges, such as positive and
negative.
port
The physical point of access into a computer, network or other electronic
device.
protocol
A formal set of rules governing the format, timing, sequencing and error
control of exchanged messages on a data network.
R
RD (Receive Data)
A data port signal.
receiver
The receiver synchronizes the framing pattern, separates the frame bits from
the payload data and monitors for frame errors in 64 kbps mode. It achieves
frame synchronization within 5 milliseconds.
repeater
Equipment that receives a pulse train, amplifies it, retimes it, and then
reconstructs the signal for retransmission.
return to zero
Method of transmitting binary information such that, after each encode bit,
voltage returns to the zero level.
RI (Ring Indicator)
A data port signal.
RJ48S
An 8-position keyed jack used to connect services that are covered under FCC
Part 68 Rules, such as public switched digital service (PSDS), switched 56, 19.2
Kbps service, 64 Kbps service, and synchronous digital data with secondary
channel.
RLSD
Receive Line Signal Detect, a data port signal
RS232
A TIA/EIA standard for serial transmission.