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MX2800 STS-1 User Manual
4.
VERIFY DATA THROUGHPUT
With essential provisioning entered into the MX2800 STS-1, proceed with the actual acceptance testing of
the unit. The first test is to verify that the MX2800 STS-1 will pass traffic between the DS1 port(s) and the
STS-1 port.
Three different methods of testing are presented. Select the method according to the type of test equipment
that is available. The methods are presented in order of preference. All of the tests are performed at the
DSX-1 and STS-1 cross-connect bays. This tests both the MX2800 circuitry as well as the Central Office
cabling.
DS1 Daisy-chain to STS-1 (hard) Loopback (Method #1)
This is the most desirable of the alternative tests, since it effectively loads all 28 ports of the MX2800
STS-1 with traffic at the same time.
Equipment Required:
1. At the STS-1 cross-connect, use a test cord to loop the STS-1 from the MX2800 back on itself.
2. At the DSX-1 cross-connect, insert the TX output of the DS1 test set into the INPUT of the first DS1
channel of the MX2800.
3. At the DSX-1 cross-connect, install a Bantam test cord from the OUTPUT of the first DS1 channel to
the INPUT of the second DS1 channel. Then connect a second Bantam test cord from the OUTPUT of
the second DS1 channel to the INPUT of the third DS1 channel. Repeat this procedure for all 28 DS1
channels.
4. Connect the OUTPUT of the 28
5. Set the test set options for ESF/B8ZS and run a standard BERT test per operating company practices.
6. All alarms should clear, and the BERT test should run error free.
7. Leave this test set-up in place, as it will be used during the redundancy testing in the Controller Card
Redundancy section of this appendix.
If problems are encountered, referring to
Manual can help in troubleshooting and isolating where the problem lies.
61204659L1-1A
1 – DS1 Test set capable of running a BERT test
28 – Mini-Bantam test cords
1 – STS-1 DSX test cord
th
DS1 channel to the RX input of the DS1 test set.
Section 4, Status
Acceptance Test Procedure, Appendix A
and
Section 5, Statistics
Verify Data Throughput
in the MX2800 User
A-5
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