[Asterisk-Users] TDM400 and Phone does not 'ring'

[Wilson Pickett]

> 1 phone 'ringes' a bit cripled (instead of ring-ring... ring-ring..., it
>   does  'ring-ri... ri.... ring... ri...)
> and the 3rd one does not ring at all when Asterisk says 'Ringing Zap/6'.
> However, when I do an 'off-hook' on this phone, I get tone signal and
> can dial and talk perfectly.
> 
> I have phones compliant to the Belgium (Belgacom) Telco specs.
> Are there differences in 'Ring Voltage' ?

There is an issue here in France with our Siemens DECT phones that
required a patch to change the ring _frequency_. It was given here
ages ago, but now I can't find it. I believe it is still in "bugs". It
requires a change to one line in wcfxs.c