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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
LED Interpretation
Page 7-8Control and Port Circuit Pack Status LEDs
7
Yellow Network Control
■ Lit when one of the data channels is in use
■ On the TN777B Network Control circuit pack, a fourth
yellow LED with the label ‘‘Card in use’’ is lit when the
translation card is in use.
Processor
■ Lit during processor initialization. Lit steady on the Active
SPE and off during normal operation on the Standby SPE.
Memory.
■ Lit during system initialization (stays lit until Emergency
Transfer is turned off). Lit steady on the Active SPE and off
during normal operation on the Standby SPE.
Packet Control
■ Lit when at least one Packet Control is in use. Packet
Control LEDs do not light up (not even for the test led
command) if the packet feature is not enabled on the
Systems-Parameters Maintenance screen.
Tone Detector/Generator
■ Slow blinking when clock is in use. Otherwise, off.
Processor Interface
■ Lit when one (or more) channels (links) is in use.
Otherwise, off.
Duplication Interface
■ Lit steady on the Active SPE and dark during normal
operation on the Standby SPE. Exception: Duplication
Interface Circuit Pack A has the yellow LED lit steady if
Tone/Clock Circuit Pack 1B is active, regardless of which
SPE is active and which is standby.
Table 7-1. Circuit Pack Status LEDs — Continued
Equipment Type LED Description
Continued on next page