User's Manual

2-14
Table 2-1 DS1/E1 Ring Flashing Patterns
CONTROLLER LOCATION CONTROLLER LED
RF CMD RPTR CMD RF IDLE RPTR IDLE
Scenario 1. Ring Operating Correctly
Both Ring Terminals On-long
Off-short
On-long
Off-short
On Off
All Ring Repeaters On-long
Off-short
On-long
Off-short
Off Off
Scenario 2. Failed Repeater- RF Path Failure
Both Ring Terminals On and Off
Same
On-short
Off-long
Off Off
Alarmed Ring Repeater Off On and
Off Same
On Off
All Other Ring Repeaters Off Off
Scenario 3. Failed Repeater- RPTR Link Failure
Both Ring Terminals On and Off
Same
On-short
Off-long
Off Off
Alarmed Ring Repeater On and Off
Same
Off Off On
All Other Ring Repeaters Off Off
Scenario 4. Failed Terminal- RPTR Link Failure
Alarmed Ring Terminal On and Off
Same
No Indication Off On
Associated Ring Repeater On and Off
Same
No Indication Off On
Other Ring Terminal On-short
Off-long
On-short
Off-long
Off Off
All Other Ring Repeaters Depends on
Location in Ring
Off Off
Notes:
On-long Off-short duration indicates all ring normal pattern received.
On and Off Same duration indicates ring restore pattern received.
On-short Off-long duration indicates ring fail pattern received.