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There is a pseudo list of supported devices which is not in any way inclusive, these are just devices that have been noted as working.
* *Schneider Electric SR2MOD02*
* *Schneider Electric SR2MOD02 - supports 3G from manufacturing dates equal to or greater than 1630.*
* Siemens TC35
* Wavecom WMD02 - Now Sierra Wireless, model unknown
*For a modem to work it must support at a minimum GSM 07.07/3GPP TS 27.007 AT command set.*

In addition, *prior to ClearSCADA 2015 R1* the modem *{+}MUST{+}* support "AT\+CNMI=3,2" if it is used to receive incoming SMS messages. ClearSCADA 2015 R1 onwards also supports other CNMI modes. The modes supported by a modem can be queried using the "AT+CNMI=?" command (without the quotes) from a VT terminal.

Also, all drivers in ClearSCADA require that the modem be configured with verbose result codes enabled (V1), not numeric result codes (V0), and echo disabled (E0) not enabled (E1). The default modem command for pager channels is "ATV1E0H0S0=0".


# Allowing commands to be issued via SMS is required.
!SMS Commands.PNG|thumbnail,border=1! !SMS.PNG|thumbnail,border=1!
# When a txt message arrives to ClearSCADA it must first associate that message with a user in the database to check for permissions. The only way ClearSCADA can do this is my checking the phone number which is received with the txt message against what is specified for the users. It is *EXTREMELY IMPORTANT* to note that most of the time mobile numbers will appear with a "+", a "1" and the area code in them (in North America). If for example a user is configured to send text messages to a phone number 960 555 5555 in all likelihood when a response arrives back the number in the Pager log file will look like \+1 960 555 5555. In this case the message will fail because ClearSCADA did not find any user with the number \+1 960 555 5555. In this case ClearSCADA usually logs an alarm which indicates SMS message received but from an unknown user. The solution is to always put \+1 in front of all phone numbers in ClearSCADA if in North America. For other countries use the appropriate country code, for example \+44 for the UK.
# To acknowledge an alarm the response txt message must contain one of two following methods:
#* $Root.AcceptAlarmByCookie(nnn)      Where nnn is the cookie number of the alarm. The cookie number may be sent in the SMS with the %ACookie% trip sequence.