asterisk users - Aug 2008 - interesting RDNIS question

Hi 

I am a premium voice service provider giving some services on IVR to a Telco X .
As my premises is some 10 kms away from that telco , i have taken a PRI
connection (30 DID with 1 hunting/pilot number) from telco Y  When a customer of
Telco X dials my short code @Rs.6/- per minute his call is forwarded on the PRI
connection of telco Y . All this works fine..

Now the problem arises during billing , many customers of Telco X / Telco Z /
Telco Y somehow get to know the pilot number of telco Y and they directly dial
in (it becomes a local call and not a premium rate) the rsult being i dont get
paid for those minutes and am giving the service free virtually ...I tried to
solve the problem as follows :

1. If i filter the calls using DNIS - no matter people call short code or my
pilot number - the DNIS would always be returned as the pilot number
2. If i filter calls using ANI so that i allow  only customer of Telco X , then
eventhough i minimise the damage - but still am not sure if that customer X has
dialled short code or long code ?

this question may sound off-topic but in asterisk is there a way out ?

Rgds
sriram
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I think you could minimize the incidence of the problem by having a PRI  
with like 100 numbers associated, with the CO doing  the routing stripping  
off the last two forwarded digits. You also have a premium service  
provider that forwards premium calls to one of those numbers (I think from  
what you say that you do not see the premium number as the originating  
ID). You rotate the accepted number daily/weekly, so it's very unlikely  
that someone  can simply guess it.
Just my euro .02,
l.

In data Fri, 22 Aug 2008 09:37:20 +0200, Sriram <d_r_sriram at
hotmail.com>
ha scritto:
> Hi
>
> I am a premium voice service provider giving some services on IVR to a  
> Telco X . As my premises is some 10 kms away from that telco , i have  
> taken a PRI connection (30 DID with 1 hunting/pilot number) from telco  
> Y  When a customer of Telco X dials my short code @Rs.6/- per minute his  
> call is forwarded on the PRI connection of telco Y . All this works  
> fine..
>
> Now the problem arises during billing , many customers of Telco X /  
> Telco Z / Telco Y somehow get to know the pilot number of telco Y and  
> they directly dial in (it becomes a local call and not a premium rate)  
> the rsult being i dont get paid for those minutes and am giving the  
> service free virtually ...I tried to solve the problem as follows :
>
> 1. If i filter the calls using DNIS - no matter people call short code  
> or my pilot number - the DNIS would always be returned as the pilot  
> number
> 2. If i filter calls using ANI so that i allow  only customer of Telco X  
> , then eventhough i minimise the damage - but still am not sure if that  
> customer X has dialled short code or long code ?
>
> this question may sound off-topic but in asterisk is there a way out ?
>
> Rgds
> sriram


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