Nortel DMS-100 Series Maintenance Manual page 140

5-4 ESA maintenance overview
Figure 5-2 ESA CC basic call processing structure
Maintenance
Requests
Terminal
Processing Task
(TPT)
Server
ESA CC Queue
Call Process
Controller
(CPC)
Supervision
Sender
297-8353-550 Standard 05.01 March 2001
A terminal sends maintenance
requests and event messages
(digit collection, on-hook and
off-hook) to the TPT.
The TPT sends messages to the
server to code or decode.
The server sends messages to the
ESA CC queue; the queue order is
first-in' first-out.
The ESA CC queue sends
messages to the CPC for call
processing. Terminal data is
gathered from the translation data
tables and terminal status table.
The CPC looks at the terminal
status table to determine which line
state and what message templates
to create.
The CPC collects digits in the
translation facilities and determines
if enough digits are collected. The
static data enables the CPC to
perform translations.
Translation
Data Tables
The supervision sender takes the
message templates to create work
requests (collection of digits,
application of dial tone) to send to
the server.