Troubleshooting guide

61186003L1-1D 7-45
DLP-602
MUX Module Acceptance Test
Procedure
INTRODUCTION
This procedure provides step-by-step instructions to verify that one or more M13 MUX or STS-
1 MUX modules are properly installed in an MX2820 shelf. An Acceptance Test Checklist is
provided at the end of this procedure for sign-off after completing this phase of the instal-
lation.
NOTE
Reference to DS3 in this procedure applies also to STS-1.
Verification of Data Throughput
Three acceptance testing procedures are provided which include:
• DS1 daisy-chain to DS3 (hard) Loopback
• DS1 to DS3 “Head-to-Head” Test
• DS1 to DS3 (hard) Loopback
•MUX Module Redundancy
The test equipment available determines which method is selected for the acceptance testing
procedure. These tests are to be performed at the DSX-1 and DSX-3 cross-connect bays to
check the MX2820 circuitry and the CO cabling.
PREREQUISITE PROCEDURES
The applicable procedure must be completed prior to performing the MUX Module Acceptance
Test Procedure. If necessary, refer to the appropriate documentation before proceeding. The
applicable prerequisite procedure is one of the following:
• “NTP-004, STS-1 MUX Installation”
• “NTP-002, M13 MUX Installation”