by Brent Raynor  www.manuauto.com

Overview

MaxStream XStream wireless modems can now be security coded by applying a Vendor Identification (VID) number. This procedure will protect against unwanted intruders.

Procedure

• Connect the MaxStream XStream to the computer using a straight through serial cable.
• Only dip switch 1 is in the on position.
• Apply power to the XStream.
• Open the MaxStream X-CTU software. Should a Windows error box appear it means the XStream unit is not connected to the computer.
• Select the Modem Configuration tab and the Read tab to acquire the modem parameters.  A Version box will appear. In order for this procedure to work change the version to 42B5 .

• Select the Write tab and at the bottom of the screen will appear Complete.

• Select the Terminal tab to enter AT commands.
• Holding down the the shift key and typing +++ simutaenously will acknowledge an OK.  If necessary repeat this step until you see the OK.
• Continue the following steps in a timely manner or you will have to repeat the above step.
  

• Type atid and the VID code of the modem will appear in red.

• Type atid 4444 as the new number and press the Enter Key. The Ok will appear.

• This new number must be saved to non-volatile memory using a Write Command (ATWR) .  Otherwise, the VID code revert to the original number when the modem is powered off and then on again.
• Type atwr and press the Enter Key. OK will appear.

• Type atcn to exit the command mode.
• Repeat this step for the corresponding XStream wireless modem.

http://ftp1.digi.com/support/documentation/productmanual_xstream_pkgr_rs232rs485rfmodem_v5.x00.pdf (MaxStream X09-009PKC-R manual)

http://www.manuauto.com/decimal-to-hexadecimal-converter/ (Hex Converter)

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