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

[Nicolas Brenner]

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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