[Freeswitch-users] Help rewriting hangup causes

[Ahmed Naji]

Steve/All,

Thanks for all your feedback, this thread can be closed.

Here is some feedback:

Re: Steve's queries:

- "pproxy" was a typo on my part, but it should not affect anything. I set
them both to false in vars.xml, and don't over-ride them anywhere.
- true re: default values for proxy_media & bypass_media being false. I am
explicitly setting them here out of 1) paranoia and 2) I like to make sure I
know my variable values and not leave them to defaults - relics of being a
developer
- I was disabling the q850 code as part of my attempts to crack this nut.

Re: the solution, I've managed to rewrite some of the codes with a call to
the hangup app, which is what Steve is also using, and his findings re:
bridges getting 183 and 180 before 4xx.

I wonder if it's possible to rewrite causes from such bridges by executing a
JS or similar app attached to the bridge. I'll report on this as and when.

Regards,

Ahmed.




2010/1/12 Steven Ayre <steveayre at gmail.com>

> - prpoxy_media should be proxy_media
> - bypass_media and proxy_media shouldn't need setting to false -
> that's their default (unless you're set one of them to true on the sip
> profile?)
> - why do you need to disable q850 reason?
>
> I do something very similar - try this...
>
> <condition field="destination_number" expression="^(?:5824)(44(1|2)\d+)$">
>   <action application="set" data="continue_on_fail=true"/>
>  <action application="set" data="hangup_after_bridge=true"/>
>  <action application="set" data="sip_ignore_remote_cause=true"/>
>   <action application="bridge" data="sofia/gateway/sip.xx.xx.com/$1"/>
>   <action application="hangup" data="NORMAL_CIRCUIT_CONGESTION"/>
> </condition>
>
> By the way, you'll be unable to rewrite the hangup cause for a bridge
> that gets a 180 or 183 packet from the gateway before getting a 4xx,
> 5xx or 6xx packet (because those bridges don't 'fail') - I've seen
> this on a SIP provider before who gives 183 Session Progress before a
> 404 Not Found if the PSTN number dialled doesn't exist.
>
> Regards,
> -Steve
>
>
> 2010/1/12 Ahmed Naji <a.alalousi at gmail.com>:
> > Here you go:
> >
> > <condition field="destination_number" expression="^(?:5824)(44(1|2)\d+)$"
> > break="on-true">
> >   <action inline="true" application="set" data="bypass_media=false"/>
> >   <action inline="true" application="set" data="prpoxy_media=false"/>
> >   <action inline="true" application="set"
> data="disable_q850_reason=true"/>
> >   <action inline="true" application="set"
> data="hangup_after_bridge=false"/>
> >   <action inline="true" application="set"
> > data="sip_ignore_remote_cause=true"/>
> >   <action application="bridge" data="sofia/gateway/sip.xx.xx.com/$1"/>
> >   <action inline="true" application="set"
> > data="bridge_hangup_cause=NORMAL_CIRCUIT_CONGESTION"/>
> >   <action inline="true" application="set"
> > data="hangup_cause=NORMAL_CIRCUIT_CONGESTION"/>
> >   <action application="bridge" data="error/normal_circuit_congestion"/>
> >   <action application="hangup" data="NORMAL_CIRCUIT_CONGESTION"/>
> > </condition>
> >
> > As you can see, I am trying to rewrite the hangup codes in a multitude of
> > ways and places, but still exhibit the same behaviour.
> >
> > Any help appreciated.
> >
> > Regards,
> >
> > Ahmed.
> >
> > 2010/1/12 Steven Ayre <steveayre at gmail.com>
> >>
> >> Can you show us the dialplan extension you're trying?
> >>
> >> Thanks,
> >> -Steve
> >>
> >> 2010/1/12 Ahmed Naji <a.alalousi at gmail.com>:
> >> > Hi Michael,
> >> >
> >> > This is exactly what I'm doing, but it's just not happening.
> >> >
> >> > Thanks,
> >> >
> >> > Ahmed.
> >> >
> >> >
> >> > 2010/1/12 Michael Collins <msc at freeswitch.org>
> >> >>
> >> >>
> >> >> On Mon, Jan 11, 2010 at 4:18 AM, Ahmed Naji <a.alalousi at gmail.com>
> >> >> wrote:
> >> >>>
> >> >>> Dear All,
> >> >>>
> >> >>> I posted a thread re the subject but didn't get any joy, so perhaps
> >> >>> second time lucky.
> >> >>>
> >> >>> I need to rewrite a couple of hangup causes to mean
> NORMAL_CONGESTION
> >> >>> and
> >> >>> no matter which variables I set, this isn't happening. The idea is
> to
> >> >>> control what codes are returned to an end point after a successful
> >> >>> bridge,
> >> >>> as well as deal with what codes are returned if the bridge is
> >> >>> unsuccessful
> >> >>> (e.g. user_busy, originator_cancel ...etc).
> >> >>>
> >> >>> I've had limited success by setting hangup_after_bridge=false then
> >> >>> bridging to error/<required_code>. This, however only works when the
> >> >>> B-leg
> >> >>> terminates the call after a successful answer. Any other codes are
> not
> >> >>> rewritten.
> >> >>>
> >> >>> I've also tried playing with the bridge_hangup_code and hangup_code
> >> >>> variables prior and after bridging, still no joy. I have also set
> >> >>> sip_ignore_remote_cause=true prior to entering the bridge, as well
> >> >>> explicitly in vars.xml.
> >> >>>
> >> >>> By the way, I'm running in proxy-media mode, but I did try it with
> >> >>> bypass-media as well. Same symptoms, same behaviour.
> >> >>>
> >> >>> Any help with this would be highly appreciated.
> >> >>>
> >> >> Well, I do know that when you do a hangup in the dialplan you can
> pass
> >> >> an
> >> >> optional cause as well:
> >> >> <action application="hangup" data="USER_BUSY"/>
> >> >> If you are doing the hanging up then you have a fair amount of
> >> >> control...
> >> >> -MC
> >> >>
> >> >>
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> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > Ahmed Naji
> >> >
> >> > _______________________________________________
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> >> >
> >>
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> > --
> > Ahmed Naji
> >
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-- 
Ahmed Naji
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