Set or get the polarity of a DAHDI channel.
The POLARITY function can be used to set the polarity of a DAHDI channel.
Applies only to FXS channels (using FXO signalling) with supporting hardware.
The polarity can be set to the following numeric or named values:
However, when read, the function will always return 0 or 1.
This documentation was imported from Asterisk Version GIT-18-75226a4