[Asterisk-Users] TDM400P FXS polarity reversal?

[Rich Adamson]

> Soren Rathje wrote:
> >
> > Specs for Si3210 (TDM400P FXS Module) says on page 93:
> >
> > ---
> > Register 72. On-Hook Line Voltage
> >
> > Bit 6 VSGN On-Hook Line Voltage.
> > The value written to this bit sets the on-hook line voltage polarity
> > (VTIP–VRING).
> >   0 = VTIP–VRING is positive
> >   1 = VTIP–VRING is negative
> > ---
> >
> 
> The (missing) link..
> 
> https://www.mysilabs.com/public/documents/tpub_doc/dsheet/Wireline/ProSLIC/en/si3210.pdf
> 
> Features
> ...
> ...
> * Software programmable signal generation and audio processing:
>   - DTMF generation and decoding
>   - 12 kHz/16 kHz pulse metering generation
>   - Phase-continuous FSK (caller ID) generation
>   - Dual audio tone generators
>   - Smooth and abrupt polarity reversal          <<== NB!
>   - µ-Law/A-Law and 16-bit linear PCM audio
> ...

Can you translate that into * code?