[asterisk-dev] Call back functionality in libpri using QSig

[Christian Richter]

Paul Cadach wrote:

>Hello,
>
>Dinesh Nair wrote:
>  
>
>>On 02/10/06 22:16 Alexander Lopez said the following:
>>    
>>
>>>Does the Callback happen after a specifed time period or immediately. We
>>>      
>>>
>>it should happen after a specified time period and retry for a specific
>>number of times. i am not yet sure if infinite retries are required/supported.
>>    
>>
>
>As I understand CCBS isn't callback in usual manner. It just sends a notification back to caller about called subscriber
>is being free. No real callback is envolved. As pointed in Q.953.3, "The CCBS supplementary service enables a calling
>user A, encountering a busy destination B, to be notified when the busy destination B becomes not-busy and to have the
>service provider reinitiate the call to the specified destination B, if user A desires."
>
>  
>
This is true. And it does so by using Out Of Band Broadcast Facilities 
as far as i understood it.

>WBR,
>Paul.
>
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