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WLAN Product Interoperation Configuration Guide

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
What Should I Do Before Connecting a GPRS Modem to the Agile Controller-Campus?

What Should I Do Before Connecting a GPRS Modem to the Agile Controller-Campus?

Question

What Should I Do Before Connecting a GPRS Modem to the Agile Controller-Campus?

Answer

  1. Ensure that the GPRS modem driver is compatible with the operating system (Microsoft Windows Server 2008, Microsoft Windows Server 2012 or SUSE Linux 11 SP3, SUSE Linux 12 SP2) of the server to be connected.
  2. Obtain the baud rate (data transmission rate) of the GPRS modem.
    NOTE:

    Refer to the Product Documentation of the GPRS modem or consult the GPRS modem's technical support engineer.

  3. Use the serial cable or USB cable to connect the GPRS modem to the server.
    NOTE:
    • If the GPRS modem provides a console port, use the serial cable to connect to the GPRS modem to the server with the Service Manager installed.
    • If the GPRS modem provides a USB to serial converter, use the USB cable to connect to the GPRS modem to the server with the Service Manager installed and install the USB driver for the GPRS modem on the server.
  4. Configure the baud rate (data transmission rate) of the server to be connected to ensure that the rate is the same as that of the SMS modem.
    • Windows
      1. Choose Start > Administrative Tools > Computer Management.
      2. On the Computer Management page, choose System Tools > Device Manager.
      3. In Ports (COM&LPT), right-click Communications Port (COM1) or Communications Port (COM2) according to the console port of the SMS modem and choose Properties.

      4. Click the Port Settings tab and check the baud rate. If the default baud rate differs from that of the GPRS modem, change the baud rate based on the GPRS modem's baud rate.

    • Linux

      In the Linux operating system, the console port identifier is ttyS*. Generally, ttyS0 matches the console port COM1 and ttyS1 matches the console port COM2 in the Windows operating system. Perform the operation based on the console port to which the GPRS modem connects.

      When configuring a communication port on the Agile Controller-Campus, ensure that the port is in the /dev/ttyS0 format.

      1. Log in to the Linux operating system using the root account.
      2. Run the ls -lrt /dev/ttyS* command and view the console port to which the GPRS modem connects.

        Determine the console port to which the GPRS modem connects based on the time when the GPRS modem is connected to the server port.

      3. Run the stty -a -F /dev/ttyS0 command and view the baud rate of the console port.

        The port ttyS0 is used as an example. You need to replace it with the actual port connected to the GPRS modem.

      If the baud rate is different from that of the GPRS modem, change the baud rate based on that of the GPRS modem.
      1. Run the stty -F console port speed baud rate command to change the baud rate of the console port.
        For example, you can run the stty -F /dev/ttyS0 speed 115200 command to change the baud rate of the console port ttyS0 to 115200.
        stty -F /dev/ttyS0 speed 115200   //Change the baud rate of the console port ttyS0 to 115200.
        9600   //Display the baud rate before the change.
      2. Run the stty -F /dev/ttyS0 command to check whether the baud rate has been changed.

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Updated: 2019-03-30

Document ID: EDOC1000113779

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