Nortel DMS-100 Series Maintenance Manual page 175

ESA CC basic call processing structure
Maintenance
Requests
Terminal
processing task
(TPT)
Server
ESA CC Queue
Call process
controller
(CPC)
Supervision
sender (SS)
A terminal sends maintenance
requests and event messages,
such as digit collection, on-hook,
and off-hook to the TPT.
The TPT sends messages to the
server for coding or decoding.
The server sends messages to the
ESA CC queue. The queue order
is FIFO.
The ESA CC queue sends
messages to the CPC for call
processing. The system gathers
terminal data from the translation
data tables and TST. The CPC
looks at the TST to determine the
line state and what message
templates to create.
The CPC collects digits in the
translation facilities and determines
if the user collected enough digits.
The static data allows the CPC to
perform translations.
Translation
data tables
The SS takes the message
templates to create work requests,
such as collecting digits or applying
dial tone, to send to the server.
DMS-100 Family OPAC Maintenance Manual XPM12 and up
ESA maintenance overview 3-15