MDR-2000
V3
User's Reference Manual
Communications
command and recollecting. In practice the
'BE'
command
is
seldom used for this purpose so that
this characteristic
of
the 'OK' command is oflittle practical value.
RB - The 'Repeat Block' command
is
used in conjunction with the 'XB' command
to
retransmit a
block ofrecords. Only a single '
RB
' can be used and it can only be used after an 'XB' command.
It
is only required
if
the downstream data collection facility detected an error in a block
of
records
sent using the
'XB'
command.
RN
- The 'Reset
NVR'
command will force initialization
of
the non-volatile RAM (NVR) to the
factory settings. There
is
no
reply from the MDR-2000 to this command.
RP
- The 'Reset Port' command initializes the PBX port, clearing any errors that may have caused
the port to cease operation. There
is
no reply from the MDR-2000 to this command .
.
SD - The 'Stop Dump' command cancels the
DU
command. This command is automatically
invoked when the Interactive Monitor is activated. There is
no
reply from the MDR-2000 to this
command.
SM
- The 'Send Maintenance' command is used to transmit an MDR-2000 maintenance record to
the host system. This record is not the same as a PBX maintenance record; it pertains to the MDR-
2000 itself and not the PBX. The record is encapsulated in the same protocol used for data
transmission.
TE
- The 'TEst' command causes a single line
oftest
characters to be dumped over the modem
port. No protocol
is
used with this output.
VW
- The 'VieW' command displays the last invalid record received on CDR configurations.
If
no
invalid records have been received, the word 'Empty' will be issued. No protocol is used with this
output.
XB - The 'Transfer Block' command send a block
of
records at the current buffer pointer location
in the currently selected data storage buffer. Each record
is
individually encapsulated in the
protocol described in the next section.
An
'E
ND
' message is returned when the buffer is empty or
the pointers have been advanced past the last block
of
records in the buffer. Advancement
of
the
pointers to the next block ofrecords is automatic. Therefore successive 'XB' commands return
successive blocks ofrecords. Use the 'RB' command to repeat a block
if
an error is detected in the
transmission
of
any record in the block.
If
insufficient records are stored for a complete block then
a partial block will be sent.
4-4
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