[Freeswitch-users] Freeswitch in an existing phone network
Oliver Schenk
oliver.schenk at iinet.net.au
Thu Jun 10 06:19:35 PDT 2010
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 at 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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>>>
>>>
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>>
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