[asterisk-dev] BugID 014021, Zap/DAHDI timers, internal timing and packetization

[Russell Bryant]

On Dec 13, 2008, at 5:56 PM, Dan Austin wrote:

> I know the issue can be solved, but I am not sure it can be solved
> in 1.4 or 1.6.0 since the fix will likely need changes to the
> channel structure.


It definitely sounds like you're on the right track to the fix for  
this.  Thank you for working on it!

As far as changing ast_channel goes, we might be in luck.  I just  
deprecated a field in the ast_channel struct as a part of a bug fix.   
However, it's still there for the sake of maintaining ABI.  So, we  
actually have 80 bytes that we can use for other things if needed.  :-)

You could change:

    char unused_old_dtmfq[AST_MAX_EXTENSION];

to something like:

    union {
       /*! This is a deprecated field of the ast_channel struct */
       char unused_old_dtmfq[AST_MAX_EXTENSION];
       /*! The size of the following struct must be less than or equal  
to AST_MAX_EXTENSION */
       struct {
          uint16_t timer_rate;
       };
    };

--
Russell Bryant
Senior Software Engineer
Open Source Team Lead
Digium, Inc.