Verilink PRISM 3010 Dual DSX-1 (34-00250.2) Product Manual - Manual (Page 11)

Diagnostics 5
For the Dual DSX card, the supported loop (see Figure 2-6) is for the local
interface only. The NEAR selection invokes a loopback at the interface that loops
the receive data back towards the customer’s equipment. The unit also supports
several other loops for other interfaces. Ports in alarm are shown on the DTE
Alarms list. BERTs can be performed on the Dual DSX port.
Figure 2-5 Diagnostics Menu Diagram
Figure 2-6 Diagnostics Loop Functions
Slot X
Port Y
Loop
T1
Network
Loop
Network
Alarms
None
Near
Send Loop
Send Unloop
None
Signal Loss
Sync Loss
AIS
Yellow/Remote
Network
Performance
Statistics
Clear ESF Stats
BERT
Function
T1
DTE
Loop
None
LLB
T1
DTE
Alarms
Signal Loss
Sync Loss
AIS
Yellow/Remote
None
Network
T1 DTE
Slot X Port Y
BERT
Port
ES
SES
LOFS
UAS
CSS
BPES
ESF Errors
Sync Status
Elapsed Time
Bit Errors
Reset BERT Test
None
Loop Far
Unloop Far
NET PLB
NET LLB
NET MLB
DTE MLB
ALL
IDLE
BERT
Channel
Channel 1
Channel 24
QRSS
63, 511
2047
2 15 −
1
2 20 −
1
BERT
Pattern
2 23 −
1
1 IN 8
3 IN 24
ALT
CLEAR
Toward
Network
BERT
Direction
Toward
DTE
BERT
Results
Errored Seconds
Pattern Sync Loss
DTE
Alarms
None
3A
3B
4A
4B
5A
5B
6A
6B
Far LLB
Framing
Unframed
Framed
Multiplexer
BERT
Pattern
Generator
and
Detector
Framing,
CRC, and FDL
Control
Network
Interface
Tx
Rx
DSX1 T1 DTE Port
Receiver
Driver
TX
RXD
DTE Slot X, Port Y
Receiver
Driver
TXD
RXD
FIFO
FIFO
NET LLB
NOTE: Commanded loops are
initiated by receipt of the appro-
priate loop code from the net-
work or the far-end CSU/DSU.
Bidirectional port loop
DTE MLB NET PLB T1 DTE LLB
NET MLB
Refer to chapter Terminal
Operation in section Line Fault
and Loop Status in the
3030/3060 Reference Manual
for additional information.
Receiver
Driver
TX
RXD
Dual DSX Slot X Port Y
Receiver
Driver
TX
RXD
DSX Port Loop