Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 341)

Access Manager 2000 Manual A-9
Error-Free Second A second with no detected errors.
Errored Seconds -
Line The number of seconds with one or more Code Violation-Lines.
See CV-L.
Errored Seconds-
Path The number of seconds that a bipolar violation occurs on the DS-1 (T1)
line. See CV-P.
ES See Errored Seconds.
ES-L See Errored Seconds-Line.
ES-P See Errored Seconds-Path.
ESF See Extended Superframe Format.
ESF Facility Data
Link The ESF Facility Data Link is used in ESF circuits to transmit framing
(performance report messages PRMs), error events, and loopback
controls. The ESF Facility Data Link uses 4 kbps of bandwidth to
transmit data.
ESF Error Event An event that occurs when an ESF contains either a CRC-6 error event
or an Out of Frame event.
Event Log Each time a system event occurs (such as a system start-up, shut-down,
log in, log off, start or finish of polling, etc.), a record is made and
saved (“logged”) to database in Access Manager 2000. These events
can then be viewed at a later time.
Extended
Superframe
Format Extended Superframe Format: an AT&T imposed T1 framing standard
that provides a frame synchronization, cyclic redundancy check, and
checking data and link bits. This standard allows errors to be stored and
retrieved easily, enhancing network maintenance.
The Extended Super-frame framing format divides a 1.544 Mbps
(DS-1) line into four main sections and contains 24 frames:
(1) Traffic and signalling [1.536 Mbps] --- Divided into 24 64-kbps
channels in one frame.
(2) Framing [2 kbps]
(3) CRC-6 [2 kbps] --- See ESF Error Event
(4) Facility Data Link [4 kbps] --- See ESF Facility Data Link
Term Definition