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a shorter number of tests could have the propensity to generate false
positives when audio is present.
If you select DTMF Detect/Toggle then set a the DTMF Detect String to a
character or string for detection.
Finally the serial port can be made to reflect any DTMF signals directly as
they are selected via a DTD:x (DTMF Tone Detect) where x is the DTMF
signal detected.
The DHY-04G/HD can store a SIM card Access Code (or PIN) if you wish
to protect the SIM card from being misused on other equipment. If you
load a protected SIM card then the SIM Enabled LED will flash to indicate
a problem with the SIM and a message will be shown on the Device Info
page. If a SIM requires an access code then the message displayed will be
+CPIN: SIM PIN
Enter the Access Code here and press the submit button and the PIN will be
applied to the SIM card and, assuming it is correct, network access will be
available now and automatically every time the unit is powered up.
Please note
that other passwords or secondary access codes are not
settable here.
