[asterisk-users] Multiple simultaneous calls

[Andrew Joakimsen]

There is also an Ethernet/SIP overhead speaker. Voipsupply sells it.

On 3/2/07, Stefano Totaro <s_totaro at yahoo.com> wrote:
>
>  Quite surprising, yes! :-)
> I am from north east Italy, now I live in Verona (Romeo and Juliet's city
> :).
> I cannot do it connecting amp to the PBX. I have quite a long distance to
> cover and a network is already there.
> My "phones" are have a quite smart processor so we may probably run the
> ices2 that you are suggesting or something similar.
> I will check the links that you sent me.
>
> Thanks,
> Stefano
>
>
> >Stefano Totaro,
>  >
> >Off topic.  I just noticed your name and was a little surprised!? ;-)
> >Are you in Italy / Sicily?
>  >
> >Anyways, you can achieve overhead paging through a sound card hooked to
> >an Amp and speakers from your PBX.  I have yet to do it but have read
> >about it.  I think this may be the better solution for you unless you
> >are set on doing it over IP.
>  >
> >Check here for several options
> >http://www.voip-info.org/wiki/view/Asterisk+Paging+and+Intercom
>  >
> >I am pretty sure if you use a ring group or meetme, there is no way
> >around each phone having it's own stream.
>  >
> >Interestingly, 3Com systems do conferencing and paging through multicast
> >which is a nice idea but in practice can be a real pain to configure
> >network components to work properly (especially if you do not control
> >the network or you are trying to implement paging between remote
> >offices).  I have spent hours on this exact problem in the past.
>  >
> >If it were me, I would probably not want all that traffic on the PBX
> >unless that is all that it will be doing or if you go the sound card
> >route.  I would use ices2 and let everyone stream from a different
> >server than the PBX.
>  >
> >Since you are using phones, I do not know that ices2 would work for you,
> >something must initiate the call.  I would probably have a second
> >Asterisk box to just handle the paging, setup an extension the dialplan
> >of the main PBX to dial the paging machine via SIP (and possibly include
> >Authenticate) that would drop the call into something like this:
> >http://www.voip-info.org/wiki/index.php?page=Asterisk+cmd+page
>  >
> >Thanks,
> >Steve Totaro
>  >
>  >
>  >
> >>stefano.totaro at transport.alstom.com wrote:
> >>
> >> Hello Steve,
> >> thanks for your anwer.
> >> Yes, you are right we want to do VoIP telephone system capable also of
> >> "public address" (overhead paging) service.
> >> So synchronization is a key issue if we want to avoid unpleasant effects.
> >> We are designing our phones and they will have also onboard amplifiers.
> >> What I am trying to understand is whether we may use the phone system
> >> also for this service or if it is better
> >> to go for a specific streaming technology (Ices2 is a good suggestion
> >> thanks).
> >>
> >> What happen if I put all the phones in a ring? Do they join the same
> >> multicast stream or a single stream for
> >> each phone will be created?
> >>
> >> Thanks again.
> >> Stefano
> >>
> >>
> >> Inactive hide details for Steve Totaro <stevetotaro at hotmail.com>Steve
> >> Totaro <stevetotaro at hotmail.com>
> >>
> >>
> >>
> >>
> >>
> >>                         *Steve Totaro <stevetotaro at hotmail.com>*
> >>                         Inviato da:
> >>                         asterisk-users-bounces at lists.digium.com
> >>
> >>
> >>                         Phone:
> >>                         01/03/2007 18.33
> >>                         Per favore, rispondere a Asterisk Users
> >>                         Mailing List - Non-Commercial Discussion
> >>
> >>
> >>
> >> Per: Asterisk Users Mailing List - Non-Commercial Discussion
> >> <asterisk-users at lists.digium.com>
> >> Cc: (ccr: Stefano TOTARO/ITVRN01/Transport/ALSTOM)
> >>Oggetto: Re: [asterisk-users] Multiple simultaneous calls
> >>
> >>
> >>
> >>stefano.totaro at transport.alstom.com wrote:
> >>>
> >>> Hi Guys,
> >>> I am a novice of Asterisk and I need some experts help to understand
> >>> what I can get out of it.
> >>> I need to make multiple calls (let say 50) at once to autoanswering
> >>> softphones on a LAN and send all of them the same message that they
> >>> will repeat with loudspeakers in the same environment.
> >>> I am a little concerned about synchronization of the phones and
> >>> moreover it is not much clear to me if I have to open 50 connections
> >>> and send 50 times the same packets or if can use in some way the
> >>> multicast.
> >>> Is there anybody that may give me some idea.
> >>> Thanks in advance,
> >>> Stefano
> >>>
> >> I suppose you could do that although, I am unclear on the auto-answering
> >> softphone and the loudspeaker thing. Is this just for overhead paging
> >> or something?
> >>
> >> You could put all the phones in a ring group with ringall and use the
> >> computer's sound card to connect to an amplified speaker setup.
> >>
> >> You could also look at ices2 to stream audio or some other streaming
> >> technology.
> >>
> >> Thanks,
> >> Steve
> >
>
>
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