Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Index
Page IN-5
I
Incoming trunk, 5-4
Inserting upgrade memory card, diagram, 4-68
Interlocking post
checking
, 4-3
Interlocking post, checking, 4-3 to 4-4
Internal loopback test
error message table
, 4-54
overview, 4-49
procedure, 4-49 to 4-54
K
Key mode, unit loads, 1-31
L
Last 30 errors, checking procedure, 2-5
LED, checking, 4-3
LED, checking power supply, 4-3
M
Maintenance, 1-3
programming
on-site
, 1-3
remote, 1-7
strategy, 1-20
terminal, 1-1 to 1-2
tools, 1-2
Maintenance-busy
causes
, 5-6
overview, 5-5
status
Digital Subscriber Line (DSL)
, 5-12
extension, 5-10
trunk, 5-5
Memory card
inserting, diagram
, 4-21
MERLIN II Communication System, 1-18