Multi-Tech Systems MT3334HD8 $En V.42 Error Correction at 300 bps, $An Auto-Reliable Buffering

MT3334HD8 User Guide

$En V.42 Error Correction at 300 bps

n = 0 or 1 Default: $E0

At 300 bps, error correction is not normally used.

$E0 disables 300 bps/V.42 error correction altogether.

$E1 enables the modem to function at 300 bps in non-error correction (&E0), auto-reliable (&E1), or reliable (&E2) mode.

$An Auto-Reliable Buffering

n = 0 or 1 Default: $A0

In auto-reliable mode, the modem has four seconds to establish a reliable connection, after which the modem drops to non-error correction mode. Any data received during this period will normally be discarded. The $A command causes the modem to buffer (store) data that is received during the auto- reliable time-out period. This data is then output by the modem after the CONNECT message.

$A0 discards the data received during the auto-reliable time-out period.

$A1 buffers data received during the auto-reliable time-out period.

$Fn Auto-Reliable Fallback Character Enable/Disable

n = 0 or 1 Default: $F0

In auto-reliable mode, the modem has four seconds to establish a reliable connection. If a single carriage return is received from the remote modem during this period, the auto-reliable modem assumes that the remote modem is not in reliable mode, and drops to non-error correction mode. The carriage return is the only character that causes the modem to drop to non-error correction mode. Any other data is either buffered or discarded.

Use the $F command to enable this feature.

You can use the auto-reliable fallback character ($F) and auto-reliable buffering ($A) commands together to cause the modem to buffer all data received up until the carriage return, and then drop to non-error correction mode. All data received is then output following the CONNECT message.

$F0 causes the modem not to fall back to non-error correction connect if a carriage return is received.

$F1 causes the modem to fall back to non-error correction connect if a carriage return is received.

32 CommPlete Communications Server