Verilink PRISM 3111 (34-00242) Product Manual - Manual (Page 39)

Maintenance 31
Near
Options include None, LpUp and LpDn.
Far
Options include None, LpUp and LpDn.
Figure 3-14 Bidirectional Port Loop
Port 2 Loops This menu option allows you to run diagnostic loop tests on the PRISM 3112 Port
2 from the network back to the network and data from the DTE back to the DTE
by transmitting an inband V.54 fractional loop code toward the network in the
port’s bandwidth Figure 3-14). Each data port loop (Port 1 and Port 2) runs
independently of the other. You may run loop test on both the near and far end
units.
Near
Options include None, LpUp and LpDn.
Far
Options include None, LpUp and LpDn.
BERT Function This menu allows you to perform BERTs on the unit’s interfaces.
Pattern Selections are QRSS 63, 511, 2047, 2
^15
, 2
^20
, 2
^23
, 1:8, 3:24, Alt and Clear.
BERT This command allows you to select the BERT to be run. Selections are:
None - No BERT selected.
Idle - BERTs the idle (un-allocated) channels toward the network.
T1 Net - BERTs the full T1 bandwidth towards the network.
T1 DTE - BERTs the T1 DTE channels toward the DTE.
1 Net - BERTs the Port 1 channels toward the network.
1 DTE - BERTs the Port 1 channels toward the DTE.
2 Net - (3112) BERTs the Port 2 channels toward the network.
2 DTE - (3112) BERTs the Port 2 channels toward the DTE.
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
DTE
Near/Far