Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 349)

Access Manager 2000 Manual A-17
Repeater Loopback The repeater loopback connects the CSU network output signal back
toward the equipment. It loops the whole CSU (except the CSU
network input and output transformers) toward the equipment. This
loopback has an automatic time-out that releases the loopback after a
pre-selected time.
This loopback is helpful in testing the NET-side repeater and the
network-side critical circuitry in the loopback.
RLB Repeater Loopback.
ROM See Read-Only Memory.
Route A route consists of the two network circuit elements at T1 circuit end-
points as accessed by Access Manager. For these programs, a circuit
and a route are functionally equivalent.
RS-232 A common interface standard that permits DTEs and DCEs to
successfully interconnect.
RTS Request To Send.
S
SEFS See Severely Errored Framing Second.
Severely Errored
Framing Second Those seconds in which two or more framing bit errors occur within a
3-millisecond period. For ESF, this interval may or may not coincide
with an ESF (i.e, six framing bits).
SF See Superframe.
Stop-bit In asynchronous transmission, the last transmitted element in each
character, which informs the receiver to become idle before accepting
another character.
Subchannel A subchannel is any segment of a DS-0 channel that is used to
complete a circuit without effecting other traffic within the DS-0.
Subrate In the reference the transmission speeds falling between 300 bps and
9.6 kbps.
Term Definition