The passive VoIP port provides a passive 4.5 dB loss, even when power is disrupted to maintain critical voice service. All-Ports-Down Configuration for NID Enclosures. The all ports facing down configuration provides clean wiring within a NID enclosure. Low Intermodulation Ferrites. Proprietary ferrite blend inhibits re-magnetization of the core due to voltage spikes from impulse noise or lightning. This prevents high-level return carriers from affecting forward path video signals. Optional Power Inserter for Remote Powering. The amplifier can be powered remotely with a dual isolation compartment power inserter for high AC to RF isolation to prevent ingress. PTC Short-Circuit Protected UL Listed Adaptor. Self-resetting circuit protection provides safe protection against short-circuits to minimize maintenance costs