The presence of such kind of information in SIP headers depends on your DID provider. Contact your carrier to find the answer. On Tuesday 14 August 2012 17:19:02 Phil Kim wrote:
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
phil.kim@valiant.com
www.valiant.com <http://www.valiant.com/>
516-224-1908
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