[Freeswitch-users] Question about Lua script: How do I detect when someone picks up the phone?

[Nicolas Brenner]

On the contrary, thank you and the whole FreeSWITCH team. Your software and
support are awesome, thank you very much!

Here's something else, a little guide on creating a simple click to call
application with FreeSWITCH:

- Part I: http://www.guayal.com/how-to-bridge-two-calls-with-freeswitch

- Part II: http://www.guayal.com/how-to-create-a-basic-click-to-call-app

I still have to write Part III and see if I keep going.


On Tue, Jan 26, 2010 at 7:49 PM, Michael Collins <msc at freeswitch.org> wrote:

> Thanks for your contributions! They are much appreciated.
> -MC
>
>
> On Fri, Jan 22, 2010 at 1:22 PM, Nicolas Brenner <nicolas at medularis.com>wrote:
>
>> No problem, here it is:
>>
>> - http://wiki.freeswitch.org/wiki/Call_retry_based_on_hangup_cause
>>
>> It is linked from your reference (
>> http://wiki.freeswitch.org/wiki/Mod_lua#More_Samples).
>>
>> Sorry I didn't do it early, I hadn't seen your email.
>>
>> I also added another, more complete, example here (also linked):
>>
>> - http://wiki.freeswitch.org/wiki/Bridging_two_calls_with_retry
>>
>>
>>
>> On Thu, Jan 21, 2010 at 7:12 PM, Michael Collins <msc at freeswitch.org>wrote:
>>
>>>
>>>
>>> On Thu, Jan 21, 2010 at 3:35 AM, Nicolas Brenner <nicolas at medularis.com>wrote:
>>>
>>>>
>>>> On Wed, Jan 20, 2010 at 7:06 PM, Mike van Lammeren <
>>>> mike at van.lammeren.net> wrote:
>>>>
>>>>> So, I've been reading about early media in the wiki, and have made a
>>>>> little progress, which leads to more questions.
>>>>>
>>>>> I understand now why a call is considered connected before one person
>>>>> has picked up the phone. I am also able to get my script to wait for the
>>>>> phone to be picked up, by setting the ignore_early_media variable when
>>>>> starting a new session, like this:
>>>>>
>>>>> customerSession =
>>>>> freeswitch.Session("{ignore_early_media=true}sofia/gateway/
>>>>> example.com/" .. customerPhoneNumber)
>>>>>
>>>>>
>>>>> After that line, the script waits for the other phone to be picked up.
>>>>>
>>>>> However, now I wonder what to do with calls that don't complete, get
>>>>> busy signals, etc.
>>>>>
>>>>> What do people do in this case? The only related example I can find on
>>>>> the web is for a javascript dialer, which doesn't address any of these
>>>>> cases.
>>>>>
>>>>
>>>>
>>>> I guess it depends on what you want to do. For example I have a lua
>>>> script very similar to what you describe, although there is no confirmation
>>>> involved. Depending on the hangup cause the session gets, it might try
>>>> redialing with a different gateway, try again or just hangup.
>>>>
>>>> Take a look here http://wiki.freeswitch.org/wiki/Hangup_causes to see
>>>> what each hangup cause means. You don't need to have a special case for all
>>>> of them, only the ones you are interested in.
>>>>
>>>> Here's an example in code which retries a call depending on the hangup
>>>> cause. It retries max_retries1 times and alternates between 2 different
>>>> gateways:
>>>>
>>>> session1 = null;
>>>> max_retries1 = 3;
>>>> retries = 0;
>>>> ostr = "";
>>>> repeat
>>>>         retries = retries + 1;
>>>>         if (retries % 2) then ostr = originate_str1;
>>>>         else ostr = originate_str12; end
>>>>         freeswitch.consoleLog("notice", "*********** Dialing Leg1: " ..
>>>> ostr .. " - Try: "..retries.." ***********\n");
>>>>         session1 = freeswitch.Session(ostr);
>>>>         local hcause = session1:hangupCause();
>>>>         freeswitch.consoleLog("notice", "*********** Leg1: " .. hcause
>>>> .. " - Try: "..retries.." ***********\n");
>>>> until not ((hcause == 'NO_ROUTE_DESTINATION' or hcause ==
>>>> 'RECOVERY_ON_TIMER_EXPIRE' or hcause == 'INCOMPATIBLE_DESTINATION' or hcause
>>>> == 'CALL_REJECTED' or hcause == 'NORMAL_TEMPORARY_FAILURE') and (retries <
>>>> max_retriesl1))
>>>>
>>>>
>>>> Note: originate_str1 and originate_str2 are two different dial strings
>>>> for 2 different gateways.
>>>>
>>>>
>>> Nicolas,
>>>
>>> This is really nice. Would you be willing to add this script and a brief
>>> explanation to the wiki? You could create a whole new page and just link to
>>> it from here: http://wiki.freeswitch.org/wiki/Mod_lua#More_Samples
>>>
>>> If you have any questions please let me know!
>>> -MC
>>>
>>>
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>>>
>>
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>
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