- Viking power fail bypass system- Makes it possible to receive calls during phone system and power outages- Connects 6 pre-assigned single line station phones directly to user-assigned CO trunks- Built in ground start converter permits outbound calls from standard phones- When system is restored calls in progress are not lost - Reconnects phones to their station circuits after they bee idle- Can be configured to operate when power is lost or from an opening/closing of an alarm contact or manual closure- Can be used to convert six ining ground start lines to loop start lines- One year manufacturer's warranty- Made in the USAVKPF6A