Instruction manual

FUNCTIONAL DESCRIPTION
The SAKI also does the following functions:
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Identifies the circuit pack to the Common Control (location and vintage)
Controls status indicator Light-Emitting Diodes (LEDs) — red (failure), green
(translated), and yellow (circuit busy)
Initiates power-on startup procedures
Checks the on-board microprocessor for sanity and causes reinitialization in
case of problems
Takes NPEs out of service under control of the on-board microprocessor
Resets the protocol handler on the ATL Line Circuit Pack
Takes the whole circuit pack out of service on command from the Common
Control or when it determines that on-board interference is present in the
control time slots.
TDM
BUS
LEADS
CIRCUIT
PACK
ADDRESS
LEADS
ON-BOARD
SAKI MICRO-
PROCESSOR
PORT
SPECIFIC
CIRCUITRY
Figure 3-6. Port Circuit Pack Common Circuitry
3-13