Timewave DSP-232, Operating Manual

Page: 97 / 271

Chapter 5 Packet Operation
MBX
lets you read or record useful or needed data without having to connect or log on to the source station(s).
MBX filters the received packet data so that only packets from the selected station(s) entered above are shown,
without headers or repeated frames.
MBX
overrides normal monitor functions and can show one or both sides of a
conversation.
The operation of MBX command is as follows:
MBX NONE All monitored frames are shown with their headers.
MBX
ALL
Only the data fields in the I-frames and UI frames are shown. Data from retried
frames will be shown each time such a frame is monitored. The
MFROM
and
MTO
commands are active.
MBX call1 Only the data in the I and UI frames to or from call1 are shown. call1 can be either
the source or destination station. Retried frames are not shown. The
MFROM
and
MTO commands are ignored.
MBX call1 , call2 Only the data in the I and UI frames are shown when call1 is the source and call2 is
the destination or vice-versa. Retried frames aren’t shown. The
MFROM
and
MTO
commands are ignored.
A packet connection on any channel inhibits monitoring if
MBX
isn’t set to
NONE
.
MCON
will only work if
MBX
is set to NONE . Clear MBX with % , & , N , NO , NONE , or OFF as arguments.
MCon n Default: 0 (none)
Mode: packet Host: MC
“
n ” 0 to 6 signifies various levels of monitor indications
MCON works similarly to MONITOR , but MCON affects your display only while you’re connected to another
station . If
MCON
is set to a value between
1
and
5
, frames meant for you are displayed as though
MONITOR
was
OFF —you’ll see only the data and not any header information. With MCON 6 , frames meant for you are displayed
as any other monitored frame—the headers appear with the data.
Starting with
0
, as you increase the value of n the more “stuff” will be visible with each packet you receive:
0 You won’t monitor any packets while you’re connected.
1
Only unnumbered (UI) frames resulting from an unconnected transmission are displayed. Use this for an
“unproto,” roundtable-type conversation where you want to read other station’s packet text—sent
unproto—while you’re connected. This setting also displays beacons.
2 Numbered (I) frames are also displayed. Use this to monitor connected conversations in progress outside
your own.
3 Connect request (SABM or “C”) frames and disconnect (DISC or “D”) frames are also displayed with the
headers.
4 Unnumbered ack nowledgment (UA) of connect- and disconnect-state frames are also displayed with either
the characters “UA” or “DM” and a header.
5
Receive Ready (RR), Receive Not Ready (RNR), Reject (RJ), Frame Reject (FRMR) and (I) Frames are
also displayed.
6
Poll/Final bit, PID and sequence numbers are also displayed.
See
MONITOR
about monitoring packets while you’re not connected.
MDCheck
Immediate Command
Mode: Maildrop Host: M1
5-36 September, 05