[asterisk-users] 1.6.1 + TDM840 FSK MWI problem

[Doug Bailey]

----- "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?
> 

The ability to do line reversal MWI was added into the 1.6.2 branch. 
Looking through the 1.6.1 code base, I don't see anything other than fsk 
MWI (with and without Ring Pulse Alert Signalling.) 

In any case, this is set by defining "mwisendtype" in chan_dahdi.  
The default for this is fsk spills.  
It can be set to "nofsk" if you want to disable the fsk spills. 

The line reversal is set by specifying 
mwisendtype=lrev

Regards,
Doug Bailey