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FEATURE CODE MODULES
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MEMORY
STATION
CIRCUIT
SMDR
ADMINISTRATION
CALL
● ● ●
PACK
(TASK)
PROCESSING
PROCESSING
(TASK)
(TASK)
▲
▲
▼
▼
SYSTEM RAM
ERROR
CALL PROCESSOR LOGGER
CIRCUIT PACK
▲
MESSAGE
SEND/RECEIVE
—————————————————————————
▲
▼
/
VOICE TERMINALS,
SAT,
CO FACILITIES,
DTU, SMDR
RS-232C DEVICES
▼
OPERATING SYSTEM
▲
▲
▼
▼
ARCH ANGEL
DRIVER
INTERFACE
RS-232C
DRIVER
INTERFACE
▲
▼
—————————————
❘
❘
—————————————
NETWORK
CONTROL
SOFTWARE
▲
CONTROL
TDM BUS
CHANNEL
MESSAGES
PORT
▼
CIRCUIT
ON-BOARD
PACKS
SOFTWARE
▲
PORT
STIMULI
❘
❘
❘
❘
❘
————————————————————————————
❘
▼
SYSTEM I/O
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Figure 3-22. System Software Partitioning
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