61200410L1-1B
ESU LT User Manual
65
Chapter 8
Example Operations
TESTING EXAMPLES
Before using the ESU LT to pass data, ADTRAN recommends
running tests on the circuit. Testing consists of sending a test
pattern from end-to-end and checking for errors in the
pattern. There are two types of tests used to accomplish this:
•
Loop-up the far end and then send a test pattern.
•
Send a test pattern from both ends and check at both
ends.
Far End Looped Back Test
E1 CSU/DSUs should respond to a loop-up code sent over
the E1 circuit. The remote unit will “loop” the network
interface providing a path for data from the local unit over
the circuit and back again. Sending a known test pattern over
this loop and checking for errors verifies circuit connectivity.
The following example loops the remote unit and sends 511
or QRSS pattern through the data path. Use the 511 or QRSS
test pattern with any E1 configuration (regardless of the
channel configuration) because 511 and QRSS are always sent
in the occupied channels. (See
complete
T
EST
menu tree.) Complete the steps outlined in
Table 8-1 on page 66 to loop-up the remote E1 CSU/DSU and
send a test pattern.
Summary of Contents for 1200410L1
Page 1: ...ESU LT User Manual Part Number 1200410L1 61200410L1 1B February 2003 ...
Page 12: ...Table of Contents 12 ESU LT User Manual 61200410L1 1B ...
Page 14: ...List of Figures 14 ESU LT User Manual 61200410L1 1B ...
Page 16: ...List of Tables 16 ESU LT User Manual 61200410L1 1B ...
Page 20: ...Chapter 1 Introduction 20 ESU LT User Manual 61200410L1 1B ...
Page 28: ...Chapter 2 Installation 28 ESU LT User Manual 61200410L1 1B ...
Page 34: ...Chapter 3 Operation 34 ESU LT User Manual 61200410L1 1B ...
Page 40: ...Chapter 4 Status Menu 40 ESU LT User Manual 61200410L1 1B ...
Page 64: ...Chapter 7 Test Menu 64 ESU LT User Manual 61200410L1 1B ...
Page 79: ...Index 61200410L1 1B ESU LT User Manual 79 W wiring 69 ...