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Chapter 7 – Modem (Transparent) Mode

Command Line Interface and Application Examples for Multi-Tech Systems, Inc. IP Modules (S000368F) 87

Chapter 7 – Modem (Transparent)

Mode

Introduction

In the modem mode (also called transparent mode), raw data is communicated between serial ports 1 and 2. This

means that:

• Data received on serial port S0 is transmitted on serial port S1

• Data received on serial port S1 is transmitted on serial port S0

Transparent mode can be used in the following applications:

• The IP module is used as a Modem

• Serial Tunneling

• Transparent mode uses 100k application buffers to handle data on serial sides (s0 and s1).

• Transparent mode by bypassing the Network Processor. (applicable only for wireless modems).

Raw data is communicated between serial ports at hardware level. The option to perform transparent mode

with bypassing the processor is controlled with the configuration command.

Prerequisites

• Transparent Mode must be enabled

# set operation-mode modem-normal

• Host Interaction mode must be disabled

# set serial s0 host-interaction-mode disable

• Enable Switching-between Data mode and Command mode

# set serial s0 escape-monitor enable

• Set the Escape-Monitor-String to switch between Data mode and Command mode

# set serial s0 escape-string "+++inets0"

• Transparent Mode must be enabled with bypass mode

# set operation-mode modem-bypass (applicable only for wireless modems).

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Multitech MultiConnect Adapter Guía de usuario Pagina 87