T1 and E1 are common telephony
interfaces. This solution provides protection against surge and power contact.
The SLIC telephone interface
supplies battery power, provides dialtone, and generates ringing voltage. This solution protects
dual supply voltage SLIC
interfaces against surge and power contact threats.
In telecommunications, foreign exchange office (FXO) designates a telephone signaling interface that receives plain old telephone
service (POTS). This solution protects those interfaces against surge and power contact threats.