Verilink PRISM 3111 (34-00242) Product Manual - Manual (Page 36)

28 C HAPTER 3: F RONT P ANEL I NTERFACE
30 Day Perform This register allows you to view the number of events in the past 30 day period for
the following alarms: ES, UAS, BES, SES, LOFC, CSS, CRCS, OOFS, LOSS,
AISS, RAS and BPVS.
Reg Reset This selection allows you to reset the performance registers to zero only when the
Target field is set to User. If you choose to reset the registers, the unit prompts you
a second time to verify if you want to continue with the reset.
Maintenance The Maintenance menu (Figure 3-12) allows you to perform loop test and/or BERT
functions on the T1 circuit. You can activate and clear loops and the BERT. BERT
is performed by using on-board test facilities. No other test equipment is needed.
Figure 3-12 Maintenance Menu
T1 Net Loops This menu allows you to run diagnostic loop tests on the T1 network.
Figure 3-13 Normal Operation
Far PLB
You can activate a NET PLB on the remote end unit through this selection. The
Net PLB sends an out-of-band datalink message placing the far-end into a PLB
loop mode per spec T1.403. Options include None, LpUp and LpDn.
Far LLB
You can activate a Net LLB on the remote end unit through this selection. Options
include
FLpUp - (Framed Loop Up). The unit will transmit framed inband loop-up code to
the far end unit.
FLpDn - (Framed Loop Down). The unit will transmit framed inband loop-down
code to the far end unit.
ULpUp - (Unframed Loop Up). The unit will transmit unframed inband loop-up
code to the far end unit.
T1 Net Loops T1 DTE Loops Port 2 Loops BERT Function Port 1 Loops
Maintenance
Network Interface Framer/Deframer
Framer/
Deframer
Multiplexor Receivers/Drivers
Receivers/
Drivers
BERT Generator/
Detector
From
Ports
To
NET
From
NET
To
Ports
From
NET
To
NET
DTE (DSX1)
(100' max.)
DTE Data Port
RJ-48C
RJ-48C
DSX1, 1'-655'
to cross-connect
1
2
4
5
4
5
1
2
To Network
From Network