Black Box LRU4240 - Manual (Page 77)

Dual Trunk E1 Router
Dual Trunk E1 Router User’s Guide TECHNICAL: 0118 96 56 000 65
Diagnostics 8
The Dual Trunk E1 Router offers extensive diagnostic capabilities for local and remote analysis.
These include fixed test patterns and two user-programmable 24-bit test patterns. In addition to
front panel LEDs, the Dual Trunk E1 Router features more than a dozen user-configurable
parameters and performance thresholds for remote alarm reporting.
R
EQUIRED
T
OOLS AND
E
QUIPMENT
Obtain the following tools and equipment when performing the procedure(s) to isolate the Dual
Trunk E1 Router from the network:
• A standard E1 test set, such as a FIREBERD 6000 or equivalent with a E1 Interface and cables.
• An RJ-48 plug connector with two patch cords for connecting to the E1 test set.
• Protocol analyzer or FIREBERD 500 to capture and analyze PPP protocol layer. Third party
software protocol analyzer tools on PC to use as standard data test set, to capture packets on the
Ethernet layer such as EtherPick, or Snoop command on Unix.
• Hand tools for attaching and removing cables.
If you do not have any test equipment, you must rely on the network to do most of the
troubleshooting for you.
P
ERFORMING
T
ESTS FROM THE
F
RONT
P
ANEL
Using the arrow keys on the front panel, you can perform the following tests. For more information
on front panel controls, see
Chapter 3, “Terminal Setup.”
• Self Test
• Loopback Tests
• Pattern Tests
• Lamp Test
Self Test
The Self Test checks the unit’s electronic components and performs a signal path check of transmit
and receive directions simulating a 4000-ft E1 line.
The messages are
RUNNING SELFTEST, SelfTest Successful
, or one of the error
messages listed in Table 8-1 .
Table 8-1 Self Test Indicators
Indicators Description
Flash Code Error CRC of flash copy of executing code failed.