[Freeswitch-users] Detecting call loops while not relying on the hop counter

[Ken Rice]

A better way to do this is limit this during a period of time, say 5 per
second, when calls loop they tend to loop up very quickly


On 4/10/13 9:23 PM, "Victor Chukalovskiy" <victor.chukalovskiy at gmail.com>
wrote:

>    Hello,
>  
>  I have a scenario where FS routes hundreds of calls and loop detection is
> needed. Adding to that, I can't rely on hop counter being decremented by other
> network elements. I can use limit in the following fashion:
>  
>  <action application="limit" data="hash loop_test
> ${caller_id_number}${destination_number} 10 !NORMAL_CIRCUIT_CONGESTION"/>
>  
>  So, whenever I have 10 calls with the same calling and called party number
> combination, limit will kick-in and break the loop.
>  
>  Question: Is this efficient from the perspective of how "limit" and hash
> back-end work? Once I have a few thousand calls, all having unique "resource"
> will this become resource hungry?
>  My main concern is that it will create hundreds of hash entries all having
> the same realm but unique resource.
>  
>  Anyone knows a better solution?
>  
>  Thank you,
>  Victor
>  
> 
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-- 
Ken
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