Installation guide

Celestix HOTPin Appliance Installation Guide Page | 58
and 30000 (30 seconds). Depending on the modem speed, this
value may need to be adjusted to prevent timeout errors.
 Data bits – indicate the standard length of data bits per byte.
 RTS enabled – designate whether the Request to Send (RTS)
signal is enabled during serial communication.
 AT Commands
To send an SMS Message to the modem, configure the proper AT
commands; each command must be on a separate line. Refer to your
modem documentation for more information about AT commands if you
need to adjust the suggested settings. The default commands are:
 AT+CMGF=1 – configure text message format.
 AT+CMGS="{phone}" – phone number to send the message to.
 Token code: {code} {eof} – message string followed by the
end-of-file character.
In the default settings, the SMS provider uses the replaceable tags
'{phone}', '{code}' and '{eof}' in the AT Commands property to
inject the user's phone number, current OTP and the required end-
of-file character into commands that are sent to the modem. These
tags are required for the SMS Provider to function. The replaceable
tags listed below can be used to include additional information in
the SMS message.
Replaceable tags for AT commands:
 {user_name} – the user's login name.
 {user_full_name} – the user's full name.
 {email} – the user's email address.
 {phone} – the user's phone number.
 {code} – the next token code.
 {timestamp} – the date and time the request was sent
to the provider.
Important: Without the {code} tag included, the message will not
provide a token code to the user.
 Log the modem response for debugging – a tool to help system
administrators debug SMS provider operation by logging modem traffic
to SMS provider log files (HOTPin|Log Files). This should only be used
as a temporary debugging tool because one response is logged for
each token code request.
 Reset to Defaults – restore properties in the Communication Settings
and AT Commands sections to the original settings.
COM Port Locations
Most GPRS/GSM modems will communicate over a USB or serial cable and can
connect to any like port that is open on the appliance; the Windows operating
system will define a virtual COM port for USB devices. Available connections will
be listed under Communication Settings in the COM port drop menu.