ZyXEL U-336RE User Guide - Page 37

Default Modem Settings for PC, ZyXEL Serial/Parallel I/O Card

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on your PC, be sure to enable the disk cache by including SMARTDRV execution in your AUTOEXEC batch file. Default Modem Settings for PC's The U-336S/SA factory settings are configured for operation with PC type computers and communication software. In most cases, no additional settings will be required. The following are some of the default settings that are used for operation with PC computers and software: AT Command E1 &C1 &D2 &K4 &N0 Description Echoes command characters. Carrier detect follows remote carrier. Modem disconnects on DTR on-to-off transition. Use both V.42 and MNP 4 error correction, and use both V.42bis and MNP 5 data compression. Modem negotiates highest possible connection speed. ZyXEL Serial/Parallel I/O Card For high-speed PC to modem communication, ZyXEL produces a special I/O adapter card. This card includes a serial port and a parallel port, each with special features, particularly when working with a ZyXEL modem, for example: The serial port is 16550-compatible for most communication software usage. It has a speed of up to 460.8Kbps and data loss errors will not occur when working with a ZyXEL modem's serial port. This solves high-speed communication problems in Windows and other multi- Basic Modem Operation 23

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Basic Modem Operation
23
on your PC, be sure to enable the disk cache by including
SMARTDRV execution in your AUTOEXEC batch file.
Default Modem Settings for PC
’
s
The U-336S/SA factory settings are configured for operation with PC
type computers and communication software. In most cases, no
additional settings will be required. The following are some of the
default settings that are used for operation with PC computers and
software:
AT Command
Description
E1
Echoes command characters.
&C1
Carrier detect follows remote carrier.
&D2
Modem disconnects on DTR on-to-off transition.
&K4
Use both V.42 and MNP 4 error correction, and
use both V.42bis and MNP 5 data compression.
&N0
Modem negotiates highest possible connection
speed.
ZyXEL Serial/Parallel I/O Card
For high-speed PC to modem communication, ZyXEL produces a
special I/O adapter card. This card includes a serial port and a parallel
port, each with special features, particularly when working with a
ZyXEL modem, for example:
The serial port is 16550-compatible for most communication software
usage. It has a speed of up to 460.8Kbps and data loss errors will not
occur when working with a ZyXEL modem's serial port. This solves
high-speed communication problems in Windows and other multi-