[Freeswitch-users] XML Dial Plan vs Language Modules

[Shameem Shiek]

Hi Michael,

Why is it not recommended to do the brdge app right in the script?  The
reason I ask this, I did have lot of trouble using Park/Fifo app in the
script and the whole thing started working after I did the UUID transfer and
have the things I wanted executed as part of the Dial plan.

Also, How many concurrent sessions can one support in ESL using Python/Ruby
compared to using Lua?

Thanks.

On Fri, Sep 4, 2009 at 3:06 AM, Michael Collins <msc at freeswitch.org> wrote:

>
>
> On Thu, Sep 3, 2009 at 10:59 PM, Muhammad Shahzad <
> shaheryarkh at googlemail.com> wrote:
>
>> Hi,
>>
>> I couple of my team members are working on translating a very long
>> Asterisk Dial Plan to FreeSWITCH XML Dial Plan. Now reference to wiki link
>> below,
>>
>
> Before you go through all the trouble of translating the dialplan be sure
> to review the application itself. In many cases just doing a dialplan
> translation results in less efficient use of FreeSWITCH's powerful features.
> Be sure that you are looking at the way FreeSWITCH handles various
> situations and take advantage of its power and ease of use.
>
>>
>>
>> http://wiki.freeswitch.org/wiki/FreeSwitch_Dialplan_XML#About_Dialplan_Variables
>>
>> The dial plan variables are not getting initialized as expected. I was
>> just wondering if we move this variable get and set stuff to any language
>> module say mod_perl, will that make any difference performance wise? I mean
>> we will be invoking a Perl interpreter for each incoming call, won't that be
>> expensive in terms of RAM and CPU usage and thus reducing number of calls
>> this FS deployment can handle?
>>
>> I have guys with programming skills in Perl, PHP, Python, Java and LUA
>> languages. Which language do you recommend for this, again in terms of speed
>> and performance?
>>
>>
> Lua is very portable and we've done tests with hundreds of concurrent Lua
> scripts running. The other languages are heavier but they'll still handle
> quite a few concurrent sessions. Just be sure that you don't do the bridge
> app right in the script, use transfer instead and have the dialplan process
> any bridging that you need to do.
>
> -MC
>
>
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