Avaya 03-300430 User Manual

Page of 2574
LEDs
266 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
 
SNI yellow LED states.
Tone-Clock circuit pack LEDs
The Tone-Clock circuit packs found in non IPSI connected port networks have the standard red, 
green and yellow LEDs. The red LED has the traditional meaning. The yellow and green LEDs 
flash in specific patterns to indicate the status of the circuit pack. The standby status applies 
only to systems with a duplication option.
Maintenance/Test circuit pack LEDs
The TN771D maintenance/test circuit pack has the standard red, green, and yellow LEDs. The 
red and green LEDs have the traditional meaning, where red indicates an alarm condition, and 
green indicates testing in progress.
The yellow LED can be off or on continuously or flashing, depending on the mode of operation 
of the TN771D and whether or not it has detected errors. The yellow LED is on steady when the 
TN771D’s analog test port or digital test ports are being used to test trunks or line circuits. The 
yellow LED is also used to indicate packet-bus status. 
on page 267 illustrates the maintenance/test yellow LED states as they 
apply to packet-bus activity.
Table 67: Switch Node Interface (SNI) yellow LED flashing states 
LED 
on
LED 
off
Condition
0.1 sec
0.1 sec
Fiber Out-of-Frame. This state indicates a failure of test #238, which may 
be caused by absence of the opposite end EI or Switch Node Interface, a 
broken or missing fiber, or a missing lightwave transceiver on either 
endpoint.
0.5 sec
0.5 sec
In Frame — No Neighbor. This state corresponds to a failure of test # 
237, usually due to a failure of this SNI, or the EI or SNI at the opposite of 
the fiber. This condition may also be due to a faulty Switch Node Clock 
(SNC).
solid 
on
SNI Active. This is the normal state for an active SNI.
solid 
off
SNI Standby. This is the normal state for a standby SNI in systems with a 
duplication option.