[Freeswitch-users] FreeSwitch state machines for CHANNEL_STATE and CHANNEL_CALLSTATE

[João Mesquita]

The documentation of this state machine is something that I would love to have documented somewhere. Unfortunately, very few people really know how it works and most of them are busy actually coding the core of freeswitch.  

I wonder if someday someone will accept this challenge and document it, it would help a lot of other not-so-core developers to understand how things work inside FS.  

Regards,
--  
João Mesquita
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)


On Tuesday, February 7, 2012 at 6:05 AM, David Artuñedo Guillén wrote:

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> Hi,
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> I’m new to FreeSwitch world. I’m looking at using the mod_event_socket interface to write some simple call control app. The Events I’m interested at are CHANNEL_STATE and CHANNEL_CALLSTATE to recognize the status of the calls and how they progress. I have not found any docs describing the state machines for channels and Calls. I look up in the Source code as well and couldn’t find the place where the state machine is implemented.  
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> Does anybody know where can I find this info?
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> EG, when setting up some call through FS these are the events I am getting with the uuids associated:
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_INIT
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_CALLSTATE       RINGING
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_ROUTING
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_CONSUME_MEDIA
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> 9a66eaf9-e11e-4f9c-9623-19deac73fc2e    CHANNEL_CALLSTATE       ACTIVE
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_CALLSTATE       EARLY
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_CALLSTATE       ACTIVE
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_EXECUTE
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_HIBERNATE
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> 9a66eaf9-e11e-4f9c-9623-19deac73fc2e    CHANNEL_STATE   CS_HIBERNATE
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_RESET
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> 9a66eaf9-e11e-4f9c-9623-19deac73fc2e    CHANNEL_STATE   CS_RESET
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> 9a66eaf9-e11e-4f9c-9623-19deac73fc2e    CHANNEL_STATE   CS_SOFT_EXECUTE
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_SOFT_EXECUTE
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_CONSUME_MEDIA
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_EXCHANGE_MEDIA
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_CALLSTATE       HANGUP
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_HANGUP
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> 9a66eaf9-e11e-4f9c-9623-19deac73fc2e    CHANNEL_STATE   CS_PARK
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_REPORTING
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_CALLSTATE       DOWN
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> bbac39e0-9025-4969-a6ba-b49c89b12237    CHANNEL_STATE   CS_DESTROY
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> Thanks in advance.  
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> David
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