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MDR-2000
V3
User's Reference Manual
Data Collection
two hour digits on the duration field can be used to construct a duration field in the format
of
'99999:99:99' for downstream processing.
'19'
is
an optional field terminator.
'Ix' fields can be terminated based on several criteria.
Firstly, the field may be
of
a fixed length, such as the 'IO' field. Secondly, the field may be at the
end
of
the Digits Dialed field and therefore is terminated by the end
of
the record. Thirdly, the field
may be variable length and have to be terminated by the presence
of
the
'I9'
designator. In any
event, any parsing routines should always detect
'I9'
or the end
of
the record as the end
of
the
current field.
Other
Notes:
If
the record type is
'X'
then this indicates a normal Expanded
MDR
Standard
Format record.
If
the record type is
'B'
then the MDR-2000 has detected an internal error on
transmitting the record that has resulted in the record
's
contents being changed. The record can be
discarded by the host system to avoid processing errors. In addition the MDR-2000 error indicator
(LED
CR
4) is turned on. The presence
of
'B'
type records is symptomatic
of
a hardware
malfunction in the MDR-2000.
If
the record type is an '
N'
then this indicates an older
MDR
Standard Format record which will be
found in major release
1
and major release 2 version units. Please refer to the earlier MDR-2000
Reference Manual for details on this record format and the MDR-2000 capabilities.
3.1.2
Data
Selection
As calls are received by the MDR-2000 they are scanned to ensure that they conform to the PBX
specific format.
If
they do, then they are translated to Expanded
MDR
Standard Format, com-
pressed and stored in the buffer storage.
Conformance includes two additional constraints. Firstly, the call duration must exceed the se-
lected 'Minimum Call Duration', and secondly the number
of
digits dialed must exceed the
'Minimum Digits Dialed' value. These values are set using jumpers on the MDR-2000 or by
commands to the Interactive Monitor which are described later in this manual.
An
exception to the
'Minimum
Digits Dialed' constraint are those calls with digits dialed whose
beginning digits match the values set with the 'DIGITS TABLE' command in the Interactive
Monitor. These sequences ignore the 'Minimum Digits Dialed' constraint.
If
records do not conform they are discarded or may be stored in image format
if
image collection is
enabled (see Interactive Monitor). Records that are discarded because they failed to meet the
3-5
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