[Freeswitch-users] capturing alphabet characters from session:read()

[Neil Patel]

Hello, I have a Lua IVR app running on Sangoma PRI/FreeTDM. I am getting
some funny dtmf input from time to time where session:read() returns an
alphabet character (usually "A" when it does happen, less frequently it
returns "D") instead of a digit. I am not able to reliably reproduce it,
but posting the question here in case anyone can point me in a direction to
troubleshoot this.

Thanks in advance,
Neil
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