KPC-9612 Version 5.2 July 19, 1994
18
Commands
8bitconv ON|OFF {OFF}
When ON, transmission of 8-bit data is allowed. When OFF, the 8
th
data bit is set to 0 before trans-
mission and all data received will have the 8
th
bit set to 0.
AUtolf ON|OFF {ON}
When ON, a line feed is sent to the terminal after each carriage return. This parameter should be
set ON when overprinting occurs and the terminal being used does not automatically supply its
own linefeed after a carriage return. This command only affects the data sent to the terminal, not
data sent to the radio.
See also: cr, lfadd
Ax25l2v2 ON l OFF {ON/ON}
This command provides compatibility with all known packet units implementing the AX.25 protocol.
When ON, Level 2 Version 2 protocol is implemented and the TNC will automatically adapt to
whichever version the connecting station is using. When OFF, Level 2 Version 1 is implemented.
Set this command to OFF if you need to digipeat through other units which do not digipeat version
2 packets. You may also find benefit from setting this command OFF when using several digipeat-
ers (not nodes) to send packets, or when conditions are marginal between the two stations in-
volved. (NOTE: Changing this setting after connecting to another Station will have no effect on the
current connection.)
The major difference in V1 and V2 protocol is the method used to handle retries. Version 1 will re-
send the entire packet and then disconnect if the RETRY count is reached. Version 2 will first send
a poll, the response to this poll will determine if the packet was received. It is possible that the ack
was collided with, and therefore the packet does not need to be resent. If the packet was not re-
ceived it will be retransmitted. Each time a poll is answered the TRIES count is reset to 0. If the
RETRY count is reached, Version 2 will attempt to reconnect unless RELINK is OFF. If the recon-
nect attempt is unsuccessful, then Version 2 will issue a disconnect.
See also: relink, retry, tries
For more Information, the book AX.25 Amateur Packet-Radio Link-Layer Protocol Version 2.0 Octo-
ber 1984. can be obtained from the ARRL.
AXDclay
n
(
n
= 0 – 255) {0/0}
This command specifies a period of time to wait, in addition to TXDELAY, after keying the radio be-
fore data is transmitted. If you operate through a voice repeater, this delay may be required to al-
low the repeater's transmitter to turn on. Each unit represents 10 milliseconds.
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