J
ATT TR54016
Compliance
P
ERFORMANCE
L
OOPBACK
U
WAN C
LTRA
This appendix describes the PathBuilder UltraWAN CSU/DSU performance
monitoring support capabilities on E1/T1 lines. It addresses the support
of ATT TR54016 and ANSI T1.403-1995 based performance monitoring
standards, as well as performance information available via the user
interface.
UltraWAN CSU/DSU connectors support central-office switch-initiated
loopback activation and deactivation requests.
Remote Line Loopback activation is supported on T1 ESF lines, via the
in-band, framed, 10 second duration pattern of 00001. Remote Line
Loopback deactivation is supported via the in-band, framed, 10 second
duration patttern of 001.
Remote Payload Loopback activation is supported on T1 ESF lines via the
payload loopback activate request Message-oriented Protocol (MOP)
being sent over the Facilities Data Link (FDL) channel. Remote Payload
Loopback deactivation is supported via the payload loopback deactivate
request MOP being sent over the FDL.
Performance Monitoring Statistics Collection and Reporting is supported
on T1ESF lines, as described in sections 3 and 4 of the ATT TR54016
standard. Both standard and enhanced parameter reporting is supported.
Statistics are collected every second. Statistics are reported, via status
MOPs on the FDL, as a response to various statistics request MOPs on the
FDL from the central office switch.
M
ONITORING AND
S
UPPORT ON
ONNECTORS
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