Hi all,
Question might sounds odd but is there any way to detect if
a call is coming from a ‘payphone’?
We have an IVR system which people call in to check in/out
of there work. Some calls are coming from a ‘payphone’.
Problem is our carrier is charging us a huge ‘surcharge’
on those calls maid from ‘payphone’. We would like to block those
calls but not sure how to detect them.
Is there any flag on SIP messages?
Thank you in advance.
Best regards,
Phil H. Kim
Software Engineer
VALIANT
Workforce Solutions
516-224-1908
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