[asterisk-users] Asterisk as a distributed paging system

[Matteo Fortini]

Hi!
thank you for your good answers.

Another related question:
I tried using Page() and it works perfectly, but I need to implement a 
slightly different behavior, and I'm looking into ways of implementing it.

When a user picks up the phone and chooses to page the speakers, the 
call should start (so that it's ready for talking), but in muted status.
When the user pushes a push-to-talk button, then a bell sound needs to 
be played through all the speakers, then she can start talking freely. 
Everytime the PTT button is released, the mic needs to mute, but that's 
something I can work out in the softphone.

How can I implement it? I am thinking of using some call parking method 
and some DTMF code to pass to the next state, but I am open to advice, 
since I'm quite new to Asterisk.

Could I also create a macro to do the same thing Page is doing, but with 
ConfBridge?

Last question: is there a way of reinviting periodically remotes to the 
conference, so that they can recover after e.g. a reboot?

Thank you in advance,
Matteo

Il 22/09/2010 21:51, Philipp von Klitzing ha scritto:
> Hi!
>
>    
>> I need the system to be resilient to any network partition, so that
>> anyone can send announces from any mic to all the reachable clients.
>> I'd need also to page a subset of all the speakers.
>>      
> Most of the major phone vendors (that are employed by the users of this
> list) have support for multi-cast of some sort. In recent firmware
> release notes I have read that SNOM has now also added a feature to feed
> multicast directly from a phone (and not just play multicast audio on the
> speaker as long as the phone is not in use).
>
>    
>> I'm currently using some software I wrote which sends voice over
>> multicast RTP and coordinates all the sites with multicast messages.
>>      
> app_page has been around for quite some in Asterisk, and the new Asterisk
> 1.8 now also adds the channel driver "MulticastRTP".
>
>    
>> Is there a way asterisk could be of use, or would I need to bend it
>> too much?
>>      
> Look here:
> http://www.voip-info.org/wiki/view/Asterisk+cmd+Page
> http://www.voip-info.org/wiki/view/Asterisk+Paging+and+Intercom
>
> I have made good experience with MAST for multicasting SNOM phones:
> http://www.aelius.com/njh/mast/
>
> Philipp
>
>
>