[asterisk-users] 1.6.1 + TDM840 FSK MWI problem

[Barry Miller]

On Fri, Sep 04, 2009 at 04:10:43PM -0500, Doug Bailey wrote:
> > > ----- "Barry Miller" <asterisk-users at notanet.net> wrote:
> > > 
> > > > Hi,
> > > > 
> > > > Using 1.4.26.1 & DAHDI 2.2.0.2, FSK VMWI devices off a TDM840
> > work
> > > > fine.
> > > > 
> > > > With 1.6.1.[45] & same DAHDI, instead of the FSK spill I get a
> > line
> > > > polarity reversal.  Stutter dialtone is generated as expected.
> > > > 
> > > > Has anyone else seen this?  Is there anything special I need to
> > do
> > > > for
> > > > 1.6.1 to make FSK MWI work?

    [snip]

> 
> The only thing I can think of that would be preventing the output would be 
> problems in the interface chip with the On-Hook transfer mode. 
> 
> If you run a dahdi_monitor on the channel that should be sending the FSK 
> spill and look at the results in a program like audacity, you can see if 
> the MWI FSK spill is actually reaching the interface SLIC IC. 
> 
> Something like "dahdi_monitor 1 -t spilloutput.raw" (Monitors the output 
> going to dahdi channel 1.) 

Hmm.  With both 1.4 & 1.6, without touching /etc/[asterisk|dahdi],
I used a butt-set to go off-hook, then back on.  I got:

1.4.26.1:  dahdi_monitor captured stutter dialtone, 4.5 seconds of
    silence, then the FSK spill.  And that's what I heard.

1.6.1.6:   dahdi_monitor captured stutter dialtone, 1.5 seconds of
    silence, then the FSK spill.  Sounds good with audacity.  But
    all I heard through the butt-in was stutter dialtone.  No FSK
    spill at all.

Here's hoping this tells you more than it does me :)

--Barry