Support Support
Support
Get the latest resources, online manuals, and product knowledges.
How the ATA turn on polarity reversal?
Dec 11, 2020
Login web GUI,go into“FXS-->Preferences-->Miscellaneous”page,Enable Polarity Reversal
a.png
Application scenarios: Polarity (telephone line A, B line is positive and negative) reversed, as to when to reverse: 1. called off hook 2. the end of the call ,hang up.
Polarity reversal will produce a pulse, so logger can record the user's call start time and end time to complete the valuation.
Test Method: You can use a multimeter to measure the polarity of the negative or vice versa from the off-hook calls.The user port to provide a voltage and the meter to start billing, the call ends up and the user port provide a flip Voltage, billing stop billing.