Nortel DMS-100 Series Maintenance Manual page 184

4-16 ESA maintenance overview
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Call channel management
All calls at an OPM in ESA mode are intraswitched or interswitched. The
systems needs an intraswitched or interswitched channel to complete a call. If
an intraswitched or interswitched channel is not available, the TPT sends a
channel-blocking message to the ESA CC. The originator of the call receives
a reorder tone.
Digitone receiver management
The ESA processor needs the location of the DTRs are located in the RMM.
The system downloads DTR data with the static data. Because digitone
297-8361-550 Standard 04.02 December 2004
processing waits for the result of the coin function. Supervision
continues on the terminating line.
— Coin disconnect: The terminating coin line goes on-hook first. The
system implements the coin release function. Call processing waits for
the result of the coin function.
call-processing data:
— Digit count/digit registers: The system stores collected digits in the
registers. Digit count indicates the number of digits collected.
— Routing information: This byte contains the results of digit translation.
The results include the following types of termination:
– regular
– automatic line
– revertive
– hunt group
– reorder termination
– busy
— Terminator line character: The byte results from digit translation.
— Terminator ring character: The byte contains the ringing
characteristics, the result of digit translation.
— Originator revertive ring character: The byte contains the ringing
characteristics of digit translation.
— Originator, terminator, DTR: The channel numbers of the three types
of terminals that use channels in an active call.
— Translation and audit-specific data: Translations use this data as flags
for audits on a CPB during the digit collection phase.