User manual

Appendix A. Acceptance Test Procedure
A-6 MX2810 M13 User Manual 61185001L1-1
OVERALL SYSTEM AND CABLING TEST
Now that the system has been properly provisioned for acceptance testing,
we can proceed with the actual acceptance testing of the system. The first
key test is to verify that the MX2810 will pass traffic between the DS1 and
DS3 ports. Three different methods of testing are presented. One
of the
three should be selected based on test equipment availability and network
configuration. All of the tests are performed at the DSX-1 and DSX-3
cross-connect bays or connecting equipment so that both the MX2810
circuitry and the office cabling are tested.
DS1 to DS3 “Head to Head” Test
(ordinarily a two-person operation)
This is the preferred means of testing system and cabling integrity. It tests
one DS1 channel at a time using a DS1 test set at the DSX-1 cross-connect
panel or connecting equipment and a DS3 test set at the DSX-3 or
connecting equipment location.
Equipment Required: • 1 DS1 Test Set capable of running a BERT
• 1 DS3 Test Set capable of accessing and running a
BERT on a single DS1
1. At the DSX-3 cross-connect panel or connecting equipment, properly
connect the DS3 test set to the DS3 coming from the MX2810
(confirming transmit and receive integrity is integral to the process).
2. Configure the DS3 test set for C-Bit Framing, the appropriate LBO
and set to drop out DS1 #1. Configure the DS1 BERT to run in ESF/
B8ZS mode using QRSS or other preferred test pattern. Confirm that
the MX2810 sees a good DS3 signal (DS3 STATUS LED is solid
Green on the Active Controller) and that the DS3 Test Set is in
frame synchronization with the MX2810.
3. At the DSX-1 cross-connect bay or connecting equipment, connect
the DS1 test set to the first DS1 channel of the MX2810. Configure
the test set for the same framing, line code and BERT pattern as the
DS3 test set. Confirm a good, error free BERT for a minimal period,
e.g., 15 seconds).
4. Repeat for DS1 channels 2-28 by moving the DS1 test cables and
reconfiguring the DS3 test set to drop out the appropriate DS1
channel under test.