5. Finally, AUTOBAUD: (1) sends a “sign-on” message and (2) asks for the
user’s CALLSIGN, which will also be stored in the TNC and used until
changed. At this point, the user is ready to give commands to the TNC.
+
Hint: Do not confuse the TNC’s baud rate for serial communication on the
computer port with the TNC’s 1200 baud rate for communicating using the ra
-
dio port, which is connected by a custom-wired cabling to a transceiver.
Configuring the TNC for Use with Pacterm
There are several TNC settings in addition to ABAUD (baud rate) and MYCALL
(CALLSIGN) that you may wish to change, especially if parameter values in
your TNC have been changed from their default settings. Even if you do not want
to change anything now, knowing about these parameters and knowing how to
reconfigure your TNC, gives you more control in using it with Pacterm.
Required TNC Parameter Settings
To work with Pacterm, the following TNC parameter settings are needed:
• COMMAND = $03 (CTRL+C) (default = $03, so unless this has been
changed, you do not need to do anything).
+ Hint: Pacterm has a fixed code that it sends for COMMAND and it is
the same as the TNC default value (HEX $03, which is CTRL+C from
the user’s point of view). That is, Pacterm assumes the TNC COM
-
MAND parameter is set to its default value; if it is not, Pacterm com
-
mands that send CTRL+C codes to the TNC will not work correctly.
•
Each of the following TNC parameters needs to be set to its default
value, shown below, if it has been changed to a non-default value:
•
CANLINE default = CTRL+X (HEX $18)
•
CANPAC default = CTRL+Y (HEX $19)
•
PASS default = CTRL+V (HEX $16)
Coordinating Pacterm and Your TNC Pacterm v 2.0
KAM’98 v 8.3 77 User’s Guide
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