[Freeswitch-users] Detecting payphone

[Phil Kim]

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 at valiant.com

www.valiant.com <http://www.valiant.com/> 

516-224-1908

 

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