Black Box LRU4240 Diagnostics, Required Tools and Equipment, Self Test, Indicators Description

Dual Trunk E1 Router

Diagnostics

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.

REQUIRED TOOLS AND EQUIPMENT

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.

PERFORMING TESTS FROM THE FRONT PANEL

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.
Dual Trunk E1 Router User’s Guide		TECHNICAL: 0118 96 56 000	65