[Freeswitch-users] Freeswitch in an existing phone network

[Oliver Schenk]

Hi,

Thanks for everyone's reply. Great help. I have a basic IVR going when I 
dial a given extension.

I have managed to clean out most of FreeSWITCH config and I've even 
written a little javascript file to which my call gets redirected to and 
it just says a small phrase using flite. I'm looking at buying more 
professional TTS voices such as Cebstral or Ivona. I'm hosting my 
freeswitch server in a Virtual Box instance running on Ubuntu Server 
10.04. I do my testing from X-Lite running on the host computer.

Anyway, that said, I think we will have to stick with Windows because:
1) Our existing railway SCADA server will be windows based.
2) The SCADA libraries are .NET based.
3) I don't want to have separate hardware just to run linux.
4) Our company isn't too good at supporting linux.


My problem now is to try to somehow trigger freeswitch to make an 
outgoing call on demand...


The flow of my logic is:

1) A critical alarm occurs on our SCADA system.
2) FreeSWITCH should be triggered to make an outgoing call.
3) Use a pre-recorded WAV or use TTS to tell the callee what the alarm is.


The problem:

I don't know how to "tell" freeswitch that it needs to make a call and 
maybe even pass some parameters. Given I have C# and SQL at my disposal, 
what should I use? A freeswitch javascript program that runs in an 
infinite loop and constantly scans for new alarms in a database? In the 
registry? In a folder using files? Using a http request? command line?

In other words, how do I trigger a freeswitch javascript program externally?


(By the way I tried to use the "managed" module that comes with 
freeswitch, but it just throws exceptions left right and center 
TypeInitializationException)...

Anyone have some experience?


Thanks,

Oliver Schenk


On 9/06/2010 10:43 PM, Tim St. Pierre wrote:
> Hi Oliver,
>
> FreeSwitch will do whatever you tell it to do and no more.
>
> Here's a few suggestions though -
>
> Empty out the default dialplan directory.  Don't throw those away, as you may want to reference them
> as examples, but move them somewhere else.
>
> Edit modules.conf.xml and comment or remove any modules that you don't need.  This will also save
> memory and other resources.
>
> You can also disable all the SIP profiles except one.  Pick one that makes sense (either Internal or
> External, it doesn't really matter that much), and edit it so that it makes sense with respect to
> your network.  What is your topology?  Will you just be setting freeswitch up with a static IP
> address and having calls sent to it by the main PBX?  If that's the case, you can disable a lot of
> the STUN and uPNP functionality.  Tell this profile to bind to the IP and port that the PBX will
> send the calls to.
>
> Then all you have to do, is create a very simple dialplan that will answer an incoming call and
> perform whatever task you want.  You would essentially be starting with a blank sheet, adding just
> the functions that you want.
>
> Hope that makes sense.
>
> -Tim
>
> Oliver Schenk wrote:
>    
>> Hi All,
>>
>> The company I work for currently has quite an extensive phone network
>> which gets carried between old analogue PABXes which also has an
>> interface to IP based phones. All the phones in our office are connected
>> via CAT5 cable using IP, however literally hundreds of phones out in the
>> field (we operate railway infrastructure) are on standard voice analogue
>> phones carried through fibreoptics.
>>
>> Anyway, I would like to use Freeswitch purely for its IVR and TTS
>> abilities and nothing else. So basically I just need it to act like a
>> slave to whatever IP phone network is already out there. I'm a bit
>> worried if I fire up freeswitch it will hijack the phone network!
>>
>> All our phones are accessible via a 5 digit extension. I would like
>> Freeswitch to be behind one of those ... say 12345. If anyone within our
>> phone network dials 12345 then Freeswitch should answer. I guess my
>> question is...how should I go about disabling most of FreeSwitch except
>> it's ability to pick up the phone and speak IVR/TTS and make an outgoing
>> call via the existing phone network?
>>
>> Any general pointers appreciated.
>>
>>
>> Thanks,
>>
>> Oliver Schenk
>>
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