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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-615EXP-INTF (Expansion Interface Circuit Pack)
10
provide useful visual status information. The state of the yellow LED is very
important when executing the EI Manual Loop Back Procedure previously
described.
Upon power-up, the TN776 red LED comes on and off, followed by the yellow
LED coming on solid. The TN570 red and green LEDs comes on and off. The
yellow LED remains off.
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order they are presented in the table below. By
clearing error codes associated with the
Expansion Interface Reset Test,
for
example, you may also clear errors generated from other tests in the testing
sequence.
Expansion Interface Neighbor Query Test (#237)
The Expansion Interface Neighbor Query Test is a request to an EI circuit pack to
determine if it has established communication with the EI circuit pack on the
opposite end of the fiber.
1. D = Destructive; ND = Nondestructive
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
Expansion Interface Reset Test (#336) D
Expansion Interface Fiber Out-of-Frame Query Test (#238) X X ND
Expansion Interface Lightwave Transceiver Interface Loop
Around Test (#242)
XD
Expansion Interface Control Channel Test (#316) X X ND
Expansion Interface Neighbor Query Test (#237) X X ND
Expansion Interface Local Loop Around Test (#240) X X ND
Expansion Interface 2-Way Transmission Test (#241) X X ND
TN570 Expansion Interface Packet Interface Test (#589) X X ND