Hello,
I am building a Python application based on pjsua library. One
functionality involves detecting dtmf digits. The caller goes through
a SIP trunk, and sends DTMF signals to the Python SIP user agent I am
creating. My understanding is that the SIP trunk uses RFC 2833 to send
RTP packets for DTMF digits. However, the on_dtmf_digit method I added
to my CallCallback class is never run.
def on_dtmf_digit(self, digits):
print "DTMF received, digit=", digits
outputs nothing.
I made testings using pjsua command line tool to trace packets,
however nothing is traced when I send DTMF digits. Should'nt I notice
incoming RTP packets when hitting the telephone numbers?
Thank you for your help.
Eric
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