Nortel DMS-100 Series Maintenance Manual page 178

3-18 ESA maintenance overview
Call channel management
All calls at an OPAC in ESA mode are intraswitched or interswitched.
Completion of a call requires an intraswitched or interswitched channel.
If an intraswitched or interswitched channel is not available, the TPT sends a
channel-blocking message to the ESA CC. The call originator receives a
reorder tone.
297-8211-550 Standard 05.01 August 1999
— coin disconnect supervise: The originating coin line has gone
on-hook first. The system uses the coin release function. Call
processing waits for the result of the coin function. Supervision
continues on the terminating line.
— coin disconnect: The terminating coin line has gone on-hook first.
The system uses the coin release function. Call processing waits for
the result of the coin function.
call processing data:
— digit count/digit registers: The system stores digits collected during
digit collection in the registers. Digit count indicates the number of
digits collected.
— routing information: This byte contains the results of digit
translation. The possible results include the types of termination that
follow:
– regular
– automatic line
– revertive
– hunt group
– reorder termination
– busy
— terminator line character: The byte results from the digit translation.
— terminator ring character: The byte contains the ringing
characteristics as a result of digit translation.
— originator revertive ring character: The byte contains the ringing
characteristics of digit translation.
— originator, terminator, DTR: This is the channel numbers of the three
types of terminals that use channels in an active call.
— translation and audit-specific data: This is the data translations use
as flags for audits on a CPB during the digit collection phase.