ZETRON 2000 Series Especificaciones descargar pdf (Pagina 269)

269

The “.CUS” Files

modembaud nnnn

where nnnn is the maximum modem speed (any of those listed above).

For communications at 300 baud, the speed should be set to 300 in the above command.

Otherwise, the modem may not reliably autobaud all the way down to 300 baud.

ModeInit

The ModemInit command is used to change the remote access ZlinkW port's modem

settings. This is most useful for changing the number of rings before answer, or when

CCITT modem tones are desired.

Great care must be take when modifying the modem initialization string, as an error could

render the remote access port non-functional. The string or strings specified with the

ModemInit commands completely replace the default modem initialization string.

More than one line of initialization strings may be sent to the modem by terminating all

but the last line with a blank followed by a back-slash (“\”). The last line must not end

with a back-slash. Each line will be sent to the modem in the order of the ModemInit

statements. Remember that no single initialization string may be longer than 38 characters.

MODEMINIT string

MODEMINIT AT X4 V1

MODEMINIT AT S7=4

For communications at 9600 or 14400 baud, the &Q0 command needs to be included in

the ModemInit string in options.cus. The &Q0 command disables data compression and

error correction functions. (ZlinkW performs error correction by default. Moreover,

compression delays the ZlinkW protocol ACKs.) Below is an example of the &Q0

command for ModemInit:

modeminit AT S0=2 S7=30 S9=6 S10=14 X4 V1 &Q0

See your modem owner's manual for specific modem commands, their format, and

applications.

For 9600 baud and faster modems, the system log may indicate the computer-to-modem

speed, rather than the modem-to-modem speed. The log reports whatever is in the connect

string. However, the currently shipping US Robotics Sportster modem has been set with

the &B0 command which reports the modem-to-modem speed in the connect string.

If your maintenance modem is a Hayes 1200, the ModemInit string requires an X4 result

code command (default is X0 = 300 baud) to enable extended result codes for

autobauding. Newer modems default to X4 unless it is expressly overwritten.

Note Any command in the ModemInit string that the modem does not

understand could cause an error, which could return some settings

to the default values. If you encounter an error, please check that

the X4 result code is still active.

1 2 ... 264 265 266 267 268 269 270 271 272 273 274 ... 375 376

Sin comentarios

ZETRON 2000 Series Especificaciones Pagina 269