MFJ-1270C/1274C MANUAL ADVANCED OPERATION
Page 63
You can add a <LF> after each <CR> included in your packets by setting
LFADD ON. If the other station reports that lines are overprinted on his
display, and he can't remedy the situation at his end, you can enable this
function.
Commands Affecting Protocol This section describes some of the commands
that affect the operation of the packet protocol. Details of the protocol are given
in Chapter 9.
The MFJ TNC implements AX.25 Level 2 protocol, a set of rules for formatting
messages to other TNCs. The version of AX.25 Level 2 protocol used by the
MFJ TNC can be set to Version 2.0 with the command AX25L2V2 ON, or to
Version 1.0 with the command AX25L2V2 OFF. Digipeating may not be
successful if some MFJ TNCs are running Version 1.0 and some are running
Version 2.0. In addition, the command CHECK controls a timing function that
depends on the protocol version selected.
You can specify the "address" to be used for unconnected packets, as well as
intermediate digipeaters with the UNPROTO command. The format is similar
to that of the CONNECT command:
cmd:UNPROTO QST VIA NK6K
The default address for unconnected packets is CQ.
The following functions may be useful for tracking down protocol problems.
They are seldom useful for ordinary packet operations. The error-checking
function of the protocol is disabled for monitored packets with the command
PASSALL. If you set PASSALL ON, any "packet" will be displayed if it
meets the following conditions: It must start with a flag sequence; and it must
contain an integral number of 8-bit bytes. The TRACE command enables the
display of the address and control fields of packets, as well as the text. The trace
function displays all bytes in hex as well as ASCII equivalents.
Packet Timing Functions
Transmit Timing
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