Epson Multi-mode Data Controller MFJ-1278B - Manual (Page 290)

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS
TXUIFRAME ON/OFF Mode: Packet Default: ON
TXUIFRAME is used to tell the MFJ-1278B what to do with unconnected information left
in its buffers. When this parameter is ON, all unconnected data are transmitted as "UI"
(unconnected) frames.
The TXUIFRAME command should be OFF for bulletin-board stations as it precludes the
unnecessary transmission of text that occurs when the BBS user disconnects and
unacknowledged packets remain.
U1 UNproto
Mode: Pactor Immediate Command
Issuing the U1 command from the p_cmd: prompt initiates the 100 baud FEC. The U1 mode
is mainly used during poor band conditions. The MFJ-1278B will request a SPEEDdown to
the U1 mode depending on the number of error-laden 200 baud information packets recieved.
(ALSO SEE MAXDdown and NO200)
U2 UNproto
Mode: Pactor Immediate Command
Issuing the U2 command from the p_cmd: prompt will initiate the 200 baud FEC mode. The
U2 mode can also be used during good band condition where communications are real good.
The MFJ-1278B will request a SPEEDUP to the 200 baud depending on the number
consecutive good 100 baud information packets it receives. (ALSO SEE MAXUP and
NO200)
UNPROTO call1
Mode: Packet Default: "CQ"
[VIA call2[,call3...,call9]]
Parameters:
call1
Callsign to be placed in the TO address field.
call2
Optional digipeater call list, up to eight calls.
This command is used to set the digipeat and destination address fields of packets sent in the
unconnected (unprotocol) mode. Unconnected packets are sent as unsequenced I frames with
the destination and digipeat fields taken from call1 through call9 options. When no
destination is specified, unconnected packets are sent to CQ. Unconnected packets sent from