MFJ MFJ-1270C, Системное руководство

Страница: 123 / 264

MFJ-1270C/1274C MANUAL COMMANDS
Page 114
8 BITCONV ON|OFF Mode: Packet Default: ON
Parameters:
ON The high-order bit is not stripped in Converse Mode.
OFF The high-order bit is stripped in Converse Mode.
This command enables transmission of 8-bit data in Converse Mode. If
8BITCONV is OFF , the high-order bit (bit 7) of characters received from the
terminal is removed before the characters are transmitted in a packet. The
standard ASCII character set requires only 7 bits, and the final bit is used as a
parity bit or ignored. Setting bit 7 in text characters transmitted over the air may
cause confusion at the other end.
If you need to transmit 8-bit data, but don't want all the features of Transparent
Mode, you should set
8BITCONV ON and AWLEN 8 . This may be desirable,
for example, if you are using a special non-ASCII character set.
Bit 7 is always removed in Command Mode, since commands require only the
standard 7-bit ASCII character set.
ABO rt Mode: Mailbox Immediate Command
This command gives the
SYSOP total control over the Mailbox by allowing him
to force a disconnect on the Mailbox link. It immediately terminates any mailbox
activity currently in progress. You may use it to avoid any QRM, to cancel a
FORWARD or NODEFORW in progress. You can also use it to terminate
mailbox usage by an unwelcome mailbox users.
AC KPRIOR ON|OFF Mode: Packet Default: ON
ACKPRIORITY permits an acknowledging TNC to transmit without regard to
the slotting delay. Turning ACKPRIOR iyty ON to enable prioritized
acknowledgement.
If ACKprior is turned off and SLots (see SLots) is set to 0, the modified AX.25
protocol is effectively disabled. The MFJ TNC will behave like normal AX.25
protocol.