Epson MFJ-1278B manual Check n, CHECKV1 ON/OFF, CHObell ON/OFF Mode Pactor Default on

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS

CHECK n Mode: Packet Default: 30

Parameters:

n0-250, specifying the check time in 10 second intervals. A value of 0 disables this feature.

This command sets a connection timeout. If a link connection exists between the MFJ-1278B and another station, and the other station "disappears," your MFJ-1278B could remain in the connected state indefinitely, refusing connections from other stations. This might happen if propagation changes unexpectedly or an intermediate digipeater station is turned off. In order to prevent this sort of lockup, the MFJ-1278B will try to clean up the link if the specified time elapses without any packets being heard from the other TNC. The operation of this feature depends on the setting of AX25L2V2.

If AX25L2V2 is ON, the MFJ-1278B will send a "check packet" to verify the presence of the other station if no packets have been heard from it for n*10 seconds. This frame contains no information, but is interpreted by the receiving station's TNC as an inquiry as to whether it is still connected. If the receiving TNC is still connected, it sends an appropriate response packet. If the TNC initiating the inquiry does not hear a response after RETRY+1 attempts, it commences a disconnect sequence, as if the DISCONNE command had been given.

If AX25L2V2 is OFF and the other station has not been heard for n*10 seconds, the MFJ- 1278B will not attempt an inquiry, but will send a disconnect packet, just as if you had typed the command DISCONNE.

CHECKV1 ON/OFF Mode: Packet Default: OFF

The CHECKV1 parameter enables the automatic idle-link- disconnect feature for AX.25 Level 2 Version 1 connections. The idle time before disconnecting will be equivalent to the AX.25 CHECK parameter (see CHECK command).

CHObell ON/OFF Mode: Pactor Default: ON

Parameters:

ON An ASCII bell character is sent to the terminal when the PACTOR link changes direction.

OFF An ASCII bell character is not sent to the terminal when the PACTOR link changes direction.