VoIP Mailing List Archives

[christian.loeschenkohl...]

hello

i am working for an austrian voip carrier.
for a few months i work with freeswitch and it is simply great.
it solves our needs in many places (high volume, flexible, stable).
the only thing i really miss is the avalibilty of php as a call control language.
mod_php or mod_freehp are not compiling anymore and my c++ knowledge isn't
that good (or even there ).
i know there is perl, i also implemented some applications (conference system with provisioning,
inbound call routing to our application servers, some tests as pbx), but what should i say -
perl and me aren't compatible in the end.

the greatest thing for us would be that mod_php comes alive again with the functional state
of mod_perl (http://wiki.freeswitch.org/wiki/Mod_perl_functions_and_classes).
there is also a bounty entry about mod_php, to pay for this would also be an option and
could be discussed.

keep on with the excellent work and greetings from austria

--
Ing. Christian Löschenkohl
Technische Leitung, Forschung& Entwicklung VoIP

xpirio
Telekommunikation& Service GmbH
Lakeside B04
9020 Klagenfurt
Austria

T +43 (0) 5 77 11 - 1000
F +43 (0) 5 77 11 - 1002
E christian.loeschenkohl@xpirio.com


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[msc at freeswitch.org]

Perhaps you should look at controlling calls via the FreeSWITCH event socket instead of from the dialplan. The nice thing about the event socket is that your call control can happen on a separate machine. There is a PHP module for the ESL (event socket library) and it would be relatively easy for you to get going. Here are some links to get you started:

http://wiki.freeswitch.org/wiki/PHP_Event_Socket
http://wiki.freeswitch.org/wiki/Event_Socket

If you absolutely MUST have call control with scripts inside of the dialplan then there simply is no better choice than Lua. You can learn Lua in a few hours, but getting mod_php finished and debugged will take time, money, and other resources that no one seems willing to spend. Here is some information to consider:

http://wiki.freeswitch.org/wiki/Mod_lua

Come join us on IRC (#freeswitch on irc.freenode.net) if you want to discuss this further.

-MC (IRC: mercutioviz)


2009/6/13 Christian Löschenkohl <christian.loeschenkohl@xpirio.com (christian.loeschenkohl@xpirio.com)>

[nik.middleton at noble...]

I couldn’t agree more.  We’re working with a group that are developing a massive PHP based music application.  They are experts in PHP and MySQL but not in VOIP/Telephony.  By tuning an abstraction layer that uses PHP to communicate with the FS event socket, allows them to work on the areas they know best and not worry about the telephony side too much.  We went the lua route, and don’t use the dial plan at all.  My view is to keep all db access and processing out of FS as much as possible. With the event socket you simply don’t need to embed anything apart from the essentials.

We are now processing 100,000+ call setups a day (4 hours) per server all using php scripts to drive the application.  We may well ultimately use C++ instead of PHP for the event socket comms, but right now PHP does just fine.


Regards



From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Michael Collins
Sent: 13 June 2009 21:57
To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] mod_php needed


Perhaps you should look at controlling calls via the FreeSWITCH event socket instead of from the dialplan. The nice thing about the event socket is that your call control can happen on a separate machine. There is a PHP module for the ESL (event socket library) and it would be relatively easy for you to get going. Here are some links to get you started:

http://wiki.freeswitch.org/wiki/PHP_Event_Socket
http://wiki.freeswitch.org/wiki/Event_Socket

If you absolutely MUST have call control with scripts inside of the dialplan then there simply is no better choice than Lua. You can learn Lua in a few hours, but getting mod_php finished and debugged will take time, money, and other resources that no one seems willing to spend. Here is some information to consider:

http://wiki.freeswitch.org/wiki/Mod_lua

Come join us on IRC (#freeswitch on irc.freenode.net) if you want to discuss this further.

-MC (IRC: mercutioviz)


2009/6/13 Christian Löschenkohl <christian.loeschenkohl@xpirio.com (christian.loeschenkohl@xpirio.com)>
hello

i am working for an austrian voip carrier.
for a few months i work with freeswitch and it is simply great.
it solves our needs in many places (high volume, flexible, stable).
the only thing i really miss is the avalibilty of php as a call control language.
mod_php or mod_freehp are not compiling anymore and my c++ knowledge isn't
that good (or even there ).
i know there is perl, i also implemented some applications (conference system with provisioning,
inbound call routing to our application servers, some tests as pbx), but what should i say -
perl and me aren't compatible in the end.

the greatest thing for us would be that mod_php comes alive again with the functional state
of mod_perl (http://wiki.freeswitch.org/wiki/Mod_perl_functions_and_classes).
there is also a bounty entry about mod_php, to pay for this would also be an option and
could be discussed.

keep on with the excellent work and greetings from austria

--
Ing. Christian Löschenkohl
Technische Leitung, Forschung& Entwicklung VoIP

xpirio
Telekommunikation& Service GmbH
Lakeside B04
9020 Klagenfurt
Austria

T +43 (0) 5 77 11 - 1000
F +43 (0) 5 77 11 - 1002
E christian.loeschenkohl@xpirio.com (christian.loeschenkohl@xpirio.com)


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[christian.loeschenkohl...]

hi

thank you very much for your input
i can say for me that i realy tried hard to use the event socket library,
but untill now i can't use it like i used all the agi scripts or even mod_perl now.

what i do most - in examples, if the server get's an incomming call

- find the right user for the number (not that easy because of did in austria),
from database or file
- build the right dial string for the bridge application (here i miss all the php
string functions most)
- unsing mod_php functions like setVariable, getVariable, answer, transfer, sleep
(i don't see how to do this with the php esl)
- or i check if the number is part of a conferencing product and build the right
conference setup

i think this would also be possible with lua and luasql, but i developed years with
phpagi und i'm very used to php in every kind of scripting or how-to-get-a-solution
situation (since over 10 years now).

for me in our setup it's also the highest goal to get the servers mostly independent
of each other. i think nobody of our costumers should be unreachable because a central
scripting/event server or also database server has gone away (as developers this happens
more often as we would like it to )

do not get me wrong, freeswitch is very powerfull and in the near future it will replace
nearly all of our asterisk servers.

in combination with php the freeswitch plattform would be heaven for me

i also thought Brian Fertig has some source written (as posted on http://wiki.freeswitch.org/wiki/Mod_php),
in combination of the mod_python rewrite (page was last modified in june 2007).

br


On 2009-06-14 01:15, Nik Middleton wrote:

[anthony.minessale at g...]

Did you actually use ESL with the php wrapper when you tried?
You can do all those things from outbound event socket fairly easily.

That mod_php you saw, never worked it was just a stub and it didn't actually ever work
when the guy who added it totally disappeared, I removed it from tree.

And you can still do event socket over localhost on the same box if you so choose.

If you really want a mod_php it's entirely possible but it would probably cost you upwards
of 5k in development costs.


2009/6/15 Christian Löschenkohl <christian.loeschenkohl@xpirio.com (christian.loeschenkohl@xpirio.com)>

[mitul at enterux.com]

Anthm,

I actually compiled ESL on PHP but wasnt able to figure out how to use it, too little documentation. Can any one throw more light on ESL?

Regards,Mitul Limbani,
Founder & CEO,
Enterux Solutions Pvt Ltd,
The Enterprise Linux Company(r),
http://www.enterux.com/



On 15-Jun-09, at 19:29, Anthony Minessale <anthony.minessale@gmail.com (anthony.minessale@gmail.com)> wrote:

[christian.loeschenkohl...]

i tried to
i think i tried everthing and looked closely to everything in libs/esl/php (of
course i build it and included the ESL.php file)

but i do not get the idea in complete, does i work in a client-server way or
in inbound mode like i want to (that is exactly my point)

no examples are there (i would put them in the wiki if i had one)
some simple code i would expect wot work, but i doesn't

<?php

require_once("ESL.php");
$esl = new eslConnection('127.0.0.1', '8021', 'asgag243tsa');

$esl->execute("setVariable", "codec_string=PCMA");
$esl->execute("answer");
$esl->execute("sleep", "2");
$esl->execute("streamFile", "/opt/freeswitch/sounds/en/us/callie/voicemail/8000/vm-hello");
$esl->execute("hangup", "16");

?>

can you please help me, what do i get wrong?

br


On 2009-06-15 15:59, Anthony Minessale wrote:

[william.suffill at gma...]

Any suggestions of what would be a good example in PHP using ESL to document? I'll take a stab at writing something up this week but it would help to have some idea what would be useful. I've used it and got it working but rather document a generic real life example versus my unique use cases.

-- W

[anthony.minessale at g...]

look at the perl examples they should translate to php as all the objects and methods are the same.

Does anyone who uses ESL + scripting have any time to toss up some wiki pages?


2009/6/15 Christian Löschenkohl <christian.loeschenkohl@xpirio.com (christian.loeschenkohl@xpirio.com)>

[anthony.minessale at g...]

A good start would probably be:

example of making an inbound connection from script to FS and execute a FSAPI command, like status or show channels.
example of making an inbound connection and listening for events and printing them serialized.
example of an outbound socket connection where the call is answered, a variable is set then perhaps play one of the pre-installed files and hangup.

That last one could be demonstrated using a native socket server or by using ivrd, a little mini forking daemon
I added to listen for socket outbound calls and determine a script from channel variables and call that script assuming to use stdin/stdout as the socket. (kinda like agi's)

I think that if everyone pooled their experienced together you could probably produce a wrapper that would allow you to use some of your legacy
agi code with ESL, naturally you would have to change the names of the apps and a few other things but there is a lot to build on here.

I left this portiion of the system where it is so that the community and how it's most commonly used will drive the direction the top layer of code
takes.


On Mon, Jun 15, 2009 at 10:12 AM, William Suffill <william.suffill@gmail.com (william.suffill@gmail.com)> wrote:

[christian.loeschenkohl...]

hi

could you provide me a simple example?

- connect with esl
- get uuid
- set a variable (e.g. codec_string=PCMA)
- answer the channel
- playback a file

the script ist called from ivrd, if i get it right
in the dialplan it's

<action application="set" data="ivr_path=/opt/freeswitch/scripts/test.php"/>
<action application="socket" data="127.0.0.1:9999 full"/>

with ivrd started as ./ivrd -h 127.0.0.1 -p 9999

--------------------
in my setup $esl->api("help") works and also $esl->sendRecv("api help")
but $esl->execute() does nothing

i use version 1.0.4pre8 if it is helpfull

br


On 2009-06-15 17:12, William Suffill wrote: