ADTRAN MX2800 M13 - Manual (Page 159)

MX2800 M13 Multiplexer User Manual Acceptance Test Procedure, Appendix A
61200290L1-1G A-3
NOTE
To change an option, simply enter the corresponding number, press
E NTER , and follow the prompts.
DS3 Configuration
• Framing = C-Bit (default = M13)
• Line Length = Use 0-225 ft. (default) or 225-450 ft., depending on the distance to the DS3 Cross
connect panel or connecting equipment.
• Timing = Local (default = Loop)
NOTE
When performing tests to a DS3 loopback, the timing must be set to Local
to guarantee DS3 frame synchronization and error-free testing during bit
error tests. Normal operation generally requires that this attribute be set
back to
Loop (system default) after all acceptance tests are completed.
One exception to the rule is when connecting two MX2800s together on a
back-to-back basis (DS3s facing one another). In that case, one MX2800
must be set to
Local and the other to Loop .
• Remote Loopbacks = FEAC/C-Bit (default)
• XCV Threshold = Disabled (default)
Protection Configuration
• Active Controller = A (default)
• Network Protection = Disabled (default)
• Max Switch Threshold = 3 (default)
• Min. Switching Period (sec.) = 10 (default)
Miscellaneous
• Loopback Time Ou t = 5 min. (default)
DS2 Configuration
• DS2 #1 = M12(4xT1)
• DS2 #2 = M12(4xT1)
• DS2 #3 = M12(4xT1)
• DS2 #4 = M12(4xT1)
• DS2 #5 = M12(4xT1)