Connect the POTS protection between Abilis and the POTS phones following the scheme below:
Figure 3.11. Connecting POTS protection
The metal case must be connected to the Abilis metal case or to the earth of the electrical system.
Interesting chapters:
Section 2.13.8, “POTS protection”;
Section 2.13.7, “POTS 4/8/16”;
Chapter 58, CTI System;
Section 84.2, “How to configure FXS (POTS) ports for analog telephones or FAX machines”.