Nortel 1000E Maintenance Manual page 84

Page 84 of 162 Clearing faults
Table 17
Conference channels causes and actions (Part 2 of 3)
Condition
System message
indicates conference
loop is defective.
System message
indicates conference
loop is defective.
Defective conference
loop with no system
message
553-3041-500 Standard 1.00
Possible cause
Defective IP
daughterboard on SSC
card
Defective SSC circuit
card
Defective IP
daughterboard or SSC
circuit card
Defective NTDK20 SSC
card
September 2004
Action
If a fault is indicated on a conference
loop, replace the daughterboard on the
affected MG 1000E.
If a fault is indicated on conference loop,
replace the NTDK20 SSC circuit card.
Reuse the daughterboards and security
device installed on the original NTDK20
SSC circuit card.
Note: Call processing on the entire
system will be interrupted while the
NTDK20 SSC circuit card is being
replaced.
If there are no messages indicating a
fault on any conference loop, test each
conference loop in the system by
entering:
LD 38
CNFC loop ("loop" represents the
conference loop number)
If the conference loop is disabled, try to
enable it by entering:
LD 38
ENLL loop ("loop" represents the
conference loop number)
Install a new NTDK20 SSC card.
Reuse the daughterboards and security
device attached to the original NTDK20
SSC circuit card.
Note: Call processing on the system will
be interrupted while the NTDK20 SSC
circuit card is being replaced.