Just some more info regarding managed C# and ESL. This is what I did:

Put the following line in modules.conf.xml:

<load module="mod_managed"/>

I also checked that the module is in the mod folder.



I then started Freeswitch from cmd in windows using "Freeswitch.exe -nonat".

There are no errors while it boots. I do however get all sorts of
strange IP addresses. My own LAN is a 10.1.1.* network, but I also get
IP addresses like:

2010-06-10 21:00:05.530374 [NOTICE] switch_utils.c:195 Adding
172.16.0.0/12 (deny) [] to list wan.auto
2010-06-10 21:00:05.530374 [NOTICE] switch_utils.c:195 Adding
192.168.0.0/16 (deny) [] to list wan.auto
2010-06-10 21:00:05.530374 [NOTICE] switch_core.c:970 Created ip list
nat.auto default (deny)
2010-06-10 21:00:05.530374 [NOTICE] switch_core.c:972 Adding
10.1.1.4/255.255.255.0 (deny) to list nat.auto
2010-06-10 21:00:05.530374 [NOTICE] switch_utils.c:195 Adding 10.0.0.0/8
(allow) [] to list nat.auto
2010-06-10 21:00:05.530374 [NOTICE] switch_utils.c:195 Adding
172.16.0.0/12 (allow) [] to list nat.auto
2010-06-10 21:00:05.531374 [NOTICE] switch_utils.c:195 Adding
192.168.0.0/16 (allow) [] to list nat.auto
2010-06-10 21:00:05.531374 [NOTICE] switch_core.c:981 Created ip list
loopback.auto default (deny)
2010-06-10 21:00:05.531374 [NOTICE] switch_utils.c:195 Adding
127.0.0.0/8 (allow) [] to list loopback.auto
2010-06-10 21:00:05.531374 [NOTICE] switch_core.c:987 Created ip list
localnet.auto default (deny)
2010-06-10 21:00:05.531374 [NOTICE] switch_core.c:990 Adding
10.1.1.4/255.255.255.0 (allow) to list localnet.auto
2010-06-10 21:00:05.531374 [NOTICE] switch_utils.c:195 Adding
192.168.42.0/24 (deny) [] to list lan
2010-06-10 21:00:05.531374 [NOTICE] switch_core.c:1086 Adding
192.168.42.0/24 (deny) to list lan
2010-06-10 21:00:05.531374 [NOTICE] switch_utils.c:195 Adding
192.168.42.42/32 (allow) [] to list lan
2010-06-10 21:00:05.531374 [NOTICE] switch_core.c:1086 Adding
192.168.42.42/32 (allow) to list lan
2010-06-10 21:00:05.531374 [NOTICE] switch_utils.c:195 Adding
192.0.2.0/24 (allow) [brian@templar.ath.cx] to list domains

Where do all those IP addresses come from? Why are they there?


Ok, next thing I did was open up VS2008 and opened up
freeswitch-1.0.6/libs/esl/managed/managed_esl.2008.sln. No problems
there. I then hit compile and it worked without any errors. I had the
following uncommented:

ThreadPool.QueueUserWorkItem(new WaitCallback(InboundMode));
//ThreadPool.QueueUserWorkItem(new WaitCallback(OutboundModeSync));
//ThreadPool.QueueUserWorkItem(new WaitCallback(OutboundModeAsync));



I then hit run and got the following error:

An unhandled exception of type 'System.TypeInitializationException'
occurred in ManagedEsl.dll
Additional information: The type initializer for 'ESLPINVOKE' threw an
exception.


It breaks here:

public ESLconnection(string host, string port, string password) :
this(ESLPINVOKE.new_ESLconnection__SWIG_1(host, port, password), true) {
  }


Output:
A first chance exception of type 'System.BadImageFormatException'
occurred in ManagedEsl.dll
A first chance exception of type 'System.TypeInitializationException'
occurred in ManagedEsl.dll
A first chance exception of type 'System.TypeInitializationException'
occurred in ManagedEsl.dll
An unhandled exception of type 'System.TypeInitializationException'
occurred in ManagedEsl.dll

Additional information: The type initializer for 'ESLPINVOKE' threw an
exception.


Unfortunately I have no idea how to fix it!


Thanks,

Oliver Schenk





On 10/06/2010 8:48 PM, Oliver Schenk wrote:

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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