Section 311-610-20B
030-101522 Rev. C
18
0509IBRC
Figure 22. Typical Circuit Status Screen - Dual Loopback
Westell B90-311610
CIRCUIT STATUS
CLEI: T1L8AC0AAA
LVL: -13.0dBdsx
LVL: 0.0dBdsx
FRMG: SF
FRMG:
SIG: OK
SIG:
TO FAC
TO CPE
REGEN
LVL: -0.0dBdsx
LVL: 0.0dBdsx
FRMG: SF
Dual Loopback
FRMG:
SIG: OK
SIG:
SELECTIONS
^D) deactivate loopback
Enter selection or <Esc> to go back to main menu
Figure 23. Typical Circuit Status Screen - Facility Loopback with FAC-to-CPE REGEN Enabled
Westell B90-311610
CIRCUIT STATUS
CLEI: T1L8AC0AAA
LVL: -0.5dBdsx
LVL: 0.0dBdsx
FRMG: SF
FRMG: UNF/UNK
SIG: OK
SIG: AIS
REGEN
TO FAC
AIS
TO CPE
LVL: -0.5dBdsx
Facility Loopback
LVL: -8.0dBdsx
FRMG: SF
FRMG:
SIG: OK
SIG:
SELECTIONS
^U) operate dual loopback
^D) deactivate loopback
^T) provision test mode
Enter selection or <Esc> to go back to main menu
X
X
LOS
Loss Of Signal
AIS
Alarm Indication Signal (all ones)
RAI
Remote Alarm Indication (yellow alarm)
Idle
Customer Disconnect Indication signal
RAI-CI Remote Alarm Indication - Customer Interface
AIS-CI Alarm Indication Signal - Customer Interface
9.2.6.3
The Circuit Status screen also shows a graphical repre-
sentation of the internal transmission paths of the NIU, with the
specific regeneration or LBO parameters that have been provi-
sioned. When different parameters are provisioned, remotely or
via the provisioning menu, they will be reflected here.
9.2.6.4
By using the <Ctrl> <U> keys simultaneously, the
NIU can be placed into Network loopback. See Figure 21. Using
the <Ctrl> <U> keys simultaneously a second time, the NIU
can be placed into both Network-side and CPE-side (dual) loop-
back. See Figure 22. The graphical representation will change
appropriately to show the loopback state as well as the configu-
ration of transmission parameters and options in the loopback
path. Figure 23 shows the NIU in a single loopback mode when
FAC-to-CPE Regeneration is Enabled.
9.2.6.5
Finally, using the <Ctrl> <D> keys simultaneously,
will cause the NIU to deactivate loopback and return the circuit
to normal operation. Also, the Loopback Timeout circuit will
also reset to the pre-selected setting.
9.2.7
TEST MODE PROVISIONING Menu Screen
The TEST MODE PROVISIONING screen (Figure 24) is used
to configure the unit’s options for the test mode. To reach this
screen from the MAIN menu, type <S> to get into the STATUS
Screen and then type <T>. For each option, the display shows
the CURRENT" configuration as well as a NEW" field that
shows what the option can be changed to. Use <tab> or the ar-
row keys to advance to an option field. Use the <space> bar to
change the available options under the NEW" field.
