[Freeswitch-users] OZ question: disconnected number handling

Michael S Collins mercutio.viz at gmail.com
Mon Jun 2 22:24:56 PDT 2008 

Mike,

Tony helped me pin it down. For the record it was just a progress  
indicator IE in an ALERT message - no other info. Essentially it was  
just early media with the SIT and dc'd number msg.

-MC

Sent from my iPhone

On Jun 2, 2008, at 5:25 PM, Michael Jerris <mike at jerris.com> wrote:

> I do recall seeing a few times alerting with cause ie in it.  Do you  
> see that in this case?
>
> Mike
>
> On Jun 2, 2008, at 6:54 PM, "Michael Collins"  
> <mcollins at fcnetwork.com> wrote:
>
>> Anthm,
>>
>>
>>
>> Thanks, that’s what I was doing wrong on the originate API – I  
>> was copying and pasting into the CLI from a notepad session and I  
>> forgot that I was setting ignore_early_media=true.  It works the w 
>> ay I would expect it to.
>>
>>
>>
>> Thanks,
>> MC
>>
>>
>>
>> From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org 
>> ] On Behalf Of Anthony Minessale
>> Sent: Monday, June 02, 2008 3:26 PM
>> To: freeswitch-users at lists.freeswitch.org
>> Subject: Re: [Freeswitch-users] OZ question: disconnected number  
>> handling
>>
>>
>>
>> when you say ignore_early_media=true you are instructing originate  
>> to not return sooner.  When you omit that option it will return as  
>> soon as the alerting is received.
>>
>>
>> On Mon, Jun 2, 2008 at 5:10 PM, Michael Collins <mcollins at fcnetwork.com 
>> > wrote:
>>
>> Note, that was supposed to say: the only reason I can't do tone  
>> detect…
>>
>>
>>
>> From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org 
>> ] On Behalf Of Michael Collins
>> Sent: Monday, June 02, 2008 2:59 PM
>>
>>
>> To: freeswitch-users at lists.freeswitch.org
>> Subject: Re: [Freeswitch-users] OZ question: disconnected number  
>> handling
>>
>>
>>
>> Anthony,
>>
>>
>>
>> Of course, you are correct.  They are retarded, and they are  
>> sending progress inband.  The only reason I can do tone detect or  
>> anything like it is because the originate app doesn't finish until  
>> the channel goes from PROGRESS to UP.  About the only thing I can  
>> think of is to have OZ take an ALERT message with progress IE  
>> containing the "I'm a retard, here's inband messaging" info and  
>> have that move the channel state to UP.  Or if there's another way  
>> for the originate app (or bridge app, depending on whether I'm  
>> using API or not) not to get snagged on this particular scenario  
>> then I'm all ears.
>>
>>
>>
>> I'll keep looking for other goofy cases like this.  The application  
>> that I'm looking at right now is essentially a "disconnected number  
>> verifier" program.  I'm trying to write an auto dialer that gets  
>> fed a list of phone numbers that we're pretty sure are disconnected  
>> and does its best to verify that fact.  Of course, when the  
>> friggin' telco sends inband progress instead of a q931 message  
>> indicating an issue then we've got to play these silly games.
>>
>>
>>
>> Let me know what you think about the ALERT + PROGRESS inband = OZ  
>> channel up.
>>
>>
>>
>> -MC
>>
>>
>>
>> P.S. – when dialing out via a VoIP carrier, what kinds of things h 
>> appen when a disconnected number is called?  Does the VoIP carrier 
>>  also have to deal with the retardation from the telcos?  If so, h 
>> ow well does it work?  Just curious if a SIP account would be good 
>>  for this kind of application…
>>
>>
>>
>> From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org 
>> ] On Behalf Of Anthony Minessale
>> Sent: Monday, June 02, 2008 2:00 PM
>> To: freeswitch-users at lists.freeswitch.org
>> Subject: Re: [Freeswitch-users] OZ question: disconnected number  
>> handling
>>
>>
>>
>> they are sending inband progress like retards.
>>
>> they are sending progress with media then playing sit instead of  
>> appropriate ISDN message.
>>
>> on trick you can do is try adding tone_detect app like some of the  
>> fax examples but for one of the 3 sit frequencies and transfer that  
>> call to hangup.
>>
>> On Mon, Jun 2, 2008 at 3:44 PM, Michael Collins <mcollins at fcnetwork.com 
>> > wrote:
>>
>> Guys,
>>
>>
>>
>> I don't know if this is "normal" or not so I'm hoping you can help  
>> me figure out what's up.  I've got a disconnected number that I  
>> call on a PRI and the sequence goes like this:
>>
>>
>>
>> Dial number, hear ring back, see PROGRESS from telco, hear SIT and  
>> "you've reached a DC'd number…", then hear fast busy for 30 second 
>> s (or so), then receive from telco that the call state is up, and  
>> then 3 seconds later call is terminated.  I've PB'd the complete l 
>> og here: http://pastebin.freeswitch.org/4549
>>
>>
>>
>> FYI, I tried it with both with and without ignore_early_media.   
>> When ignoring early media I just get 60 seconds of FS internal  
>> ringback tone then I hear that the call failed.  When not ignoring  
>> early media is when I get the SIT tone, etc. and that's also what  
>> is in pb 4549.
>>
>>
>>
>> Any thoughts on how to handle a call like this?  FS doesn't  
>> consider the call "connected" because telco sends us PROGRESS_MEDIA  
>> but doesn't actually say that the call is "up" – at least as far a 
>> s I can tell.
>>
>>
>>
>> Thanks,
>> Michael
>>
>>
>>
>>
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>>
>> -- 
>> Anthony Minessale II
>>
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>> -- 
>> Anthony Minessale II
>>
>> FreeSWITCH http://www.freeswitch.org/
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>>
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>> MSN:anthony_minessale at hotmail.com
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