[Freeswitch-users] Detecting payphone

[Sergey Okhapkin]

 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 at valiant.com
> 
> www.valiant.com <http://www.valiant.com/>
> 
> 516-224-1908
> 
> 
> 
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