[Freeswitch-users] Dynamic specify the outbound GW within source code

[fieldpeak]

Hi Avi,

Thanks so much for your kindly reply.

Actually, now i'm using mod_nibble for billing, i write a function
"check_billing_before_routing" in nibble_state_handler, in this
func("check_billing_before_routing"), it will call an external command,
this command will query the backend database if the caller has enough money
to contiue the call, the mod_nibblebill will contiue the call or hangup the
call according to the result of the external command. i have realize all
above, it works well.

switch_state_handler_table_t nibble_state_handler = {
    /* on_init */ NULL,
    /* on_routing */ check_billing_before_routing, /* Need to add a check
here for anything in their account before routing */
    /* on_execute */ sched_billing,     /* Turn on heartbeat for this
session and do an initial account check */
    /* on_hangup */ process_hangup,     /* On hangup - most important place
to go bill */
    /* on_exch_media */ NULL,
    /* on_soft_exec */ NULL,
    /* on_consume_med */ NULL,
    /* on_hibernate */ NULL,
    /* on_reset */ NULL,
    /* on_park */ NULL,
    /* on_reporting */ NULL,
    /* on_destroy */ NULL
};

For PSTN call, i use dial plan below, "1.2.3.4" is the PSTN-GW

<extension name="CallToPSTN" >
   <condition field="destination_number" expression="^(0\d+)$" >
       <action application="bridge" data="sofia/internal/$1 at 1.2.3.4" />
   </condition>
</extension>

Now, as we add one more PSTN-GW for outbound call, and the FS have to route
call to the specific GW accoring to result of the external command (the
external command will return the IP address of GW as well),

i can think out the FS own function like
"switch_channel_set_variable(channel, "caller_id_number")" can configure
the value of variable, however, what variable should i use for this case,
could you please advise, thank you very much!

Regards,
Charels

2012/1/8 Avi Marcus <avi at avimarcus.net>

> I'm not quite sure of the use case. Do any of these help?
> 1) specify a server, not an IP, and then let DNS determine where it goes.
> 2) use a small lua script to set the channel variable based on whatever
> you need - an sql query, some logic.. and then use that variable in the
> bridge string.
>
> Those help? If not, please explain more what problem you are trying to
> solve.
>
> -Avi
>
>
> On Sun, Jan 8, 2012 at 3:34 PM, fieldpeak <fieldpeak at gmail.com> wrote:
>
>> Dear friends,
>>
>> i have FS for PSTN outbound call using below dial plan,
>>
>> <extension name="CallToPSTN" >
>>    <condition field="destination_number" expression="^(0\d+)$" >
>>        <action application="bridge" data="sofia/internal/$1 at 1.2.3.4" />
>>    </condition>
>> </extension>
>>
>> While, now i need dynamically specify the outbound GW’s IP address
>> according to the return result of the external command before routing in
>> the source code , e.g. if the external command return FS the IP address of
>> OB GW 6.7.8.9, then
>>
>> <action application="bridge" data="sofia/internal/$1 at 6.7.8.9" />
>>
>> however, i don't know which function i should call within the source code
>> to realize it, could anybody help to advise,
>>
>> P.S. i know there is existing module “mod_xml_curl” can realize similar
>> function, however, I could not use it for this case…
>>
>>
>> thanks a lot!
>>
>> Regards,
>> Charles
>>
>> _________________________________________________________________________
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>
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> http://www.freeswitchsolutions.com
>
> 
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-- 
Regards,
Charles
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