Black Box LRU4240 manual Lamp Test

	Dual Trunk E1 Router
	Table 8-2 Send Test Types Descriptions
Send Test Type	Pattern Test Description
All Zeros	Used for verification of B8ZS.
1:4 (or Alternate)	The 1:4 code is the loopup remote code. Typically, it is used when the loopup remote test
	fails to place the remote system into loopback. You can determine if the failure is an
	intermittent or a hard failure by continuously sending the 1:4 code, and monitoring the
	network status to see if the pattern is being received.
	The selections are available on the full link and on NET 1 and NET 2.
	Note: If the Loop Up Remote test fails to place the remote system into loopback, check
	that the Loop Code and Network Framing parameters are the same at each end of the link.
1:2	The 1:2 code is the loop down remote code. Use it when the Loop Down Remote test fails
	to terminate the remote loopback. You can determine if the failure is an intermittent or
	hard failure by continuously sending the 1:2 and monitoring the network status to see if the
	pattern is being received.
	The selections are available on the full link and on NET 1 and NET 2.
User 1/User 2	These two user programmable patterns (up to 24 characters) let you create a test pattern
	rather than use pre-programmed patterns.

Lamp Test

Use this test to verify the LEDs. During the test, all LEDs on the front panel illuminate.

Dual Trunk E1 Router User’s Guide TECHNICAL: 0118 96 56 000 69