[Users] check if transaction exists

[Andreas M.]

Thanks for reply,
but ist should be done independent, of the client software or phone,
the "invite" message should not be sent to the client, the Server should 
  reply with "busy here" or simsilar.

Any ideas ?

regards,
Andreas M


Bogdan-Andrei Iancu schrieb:
> Hi Andreas,
> 
> this should work by default. Usually all phones with single line reject 
> with "busy  here" all incoming calls if one is already in progress (even 
> during call setup -ringing).
> 
> regards,
> bogdan
> 
> Andreas M. wrote:
> 
>> Hi all,
>> i want to introduce following in my configuration:
>>
>> CallerA calls CallerB -> ringing
>> CallerC calls CallerB -> reject
>>
>> during this transaction, without that CallerB picks up the phone, 
>> CallerC should not be able to call CallerB during this transaction,
>>
>> After this transactions, CallerC can call CallerB also.
>>
>> Any ideas how to check if there is an ongoing transaction ?
>>
>> regards,
>>
>> Andreas M.
>>
>>
>>
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>