[Freeswitch-users] FS -route to next GW if the first GW full

Tue Apr 26 13:17:17 MSD 2011

Indeed... there's a specific ISDN clearing cause for it - 34 "no
circuit/channel available" (NORMAL_CIRCUIT_CONGESTION). That maps to SIP 503
Service Unavailable (RFC3398).

Unallocated number implies it's not allocated anywhere and therefore
shouldn't reroute, while 503 suggests you should try another route.

-Steve

On 26 April 2011 09:35, David Ponzone <david.ponzone at ipeva.fr> wrote:

> Charles,
>
> if you may, I would recommend you change the behaviour of this GW sending
> back a 404 when it's full...
> That's odd.
> It should rather use: 503 Service unavailable.
>
>  David Ponzone  Direction Technique
> email: david.ponzone at ipeva.fr
> tel:      01 74 03 18 97
> gsm:   06 66 98 76 34
>
> Service Client IPeva
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>
> Le 21/04/2011 à 04:45, fieldpeak a écrit :
>
> Thanks All, it is resolved now with below config.
>
> 2011/4/20, Kristian Kielhofner <kris at kriskinc.com>:
>
> Try this:
>
>
> <extension name="9_GW" >
>
>  <condition field="destination_number" expression="^(9\d+)$">
>
>    <action application="set" data="continue_on_fail=true"/>
>
>    <action application="set" data="failure_causes=UNALLOCATED_NUMBER"/>
>
>    <action application="set" data="hangup_after_bridge=true"/>
>
>    <action application="bridge" data="sofia/internal/$1 at 192.168.200.201"/>
>
>    <action application="bridge" data="sofia/internal/$1 at 192.168.200.202"/>
>
> </condition>
>
> </extension>
>
>
> On Wed, Apr 20, 2011 at 10:58 AM, fieldpeak <fieldpeak at gmail.com> wrote:
>
> Hi Steve,
>
>
> Thanks for your so rich stuff provided.
>
>
> however, i tried to use error code to route as below, it failed (did
>
> not route the next GW when recevied UNALLOCATED_NUMBER), can you
>
> please point out is there any place wrong in the dailplan? attached is
>
> the log, thanks.
>
>
> <extension name="9_GW" >
>
>
>  <condition field="destination_number" expression="^(9\d+)$">
>
>     <action application="set" data="continue_on_fail=true"/>
>
>    <action application="set" data="hangup_after_bridge=false"/>
>
>     <action application="bridge"
>
> data="sofia/internal/$1 at 192.168.200.201"/>
>
>  </condition>
>
>
>  <condition field="brige_hangup_cause" expression="UNALLOCATED_NUMBER">
>
>   <action application="bridge" data="sofia/internal/$1 at 192.168.200.202"/>
>
>  </condition>
>
>
>  </extension>
>
>
> Regards,
>
> Charles
>
>
> 2011/4/20, Steven Ayre <steveayre at gmail.com>:
>
> If you know the number of calls the GW can handle in advance, you can
>
> limit
>
> the call attempts before sending the call to the gateway:
>
> http://wiki.freeswitch.org/wiki/Limit
>
> There are several ways to use that.
>
>
> You can reroute calls to a 2nd gateway on error:
>
>
> http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_bridge#Implementing_Failover
>
>
> There are channel variables that let you control what to consider a
>
> reroutable error and what is a give-up error:
>
> http://wiki.freeswitch.org/wiki/Channel_Variables#continue_on_fail
>
> http://wiki.freeswitch.org/wiki/Channel_Variables#failure_causes
>
> This might also be useful, particularly with mod_limit:
>
> http://wiki.freeswitch.org/wiki/Channel_Variables#transfer_on_fail
>
>
> You could use mod_lcr to get a list of all the GWs, but in a random
>
> order.
>
> That'd let you load balance (randomly) but reroute when required without
>
> duplicates unlike mod_distributor.
>
>
> Hopefully that's enough building blocks to give you somewhere to start...
>
>
> -Steve
>
>
>
>
> On 20 April 2011 08:27, Charles <fieldpeak at gmail.com> wrote:
>
>
>
> i have two media GWs connected with FS for PSTN calls, FS route the
>
> first
>
> one in normal case, once the first GW get full (all of channels were
>
> occupied), i need FS route to the second GW.
>
> i found once the first GW get full, it will reply '404 not found' to FS,
>
> can FS route to the second one according to this condition or any other
>
> alternative?
>
>
> although i know there is mod_distributor for load balancing, however, i
>
> need if only first one full then route to second one, so it looks this
>
> module not suitable for this senario...
>
>
> Thanks.
>
>
> Regards,
>
> Charles
>
>
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> --
>
> Kristian Kielhofner
>
>
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