Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.
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Seizure Mode and VoIP, VoIP and Seizure Mode
In telecommunications, the seizure mode decides how an FXS port detects an off-hook event from the peer FXO end. With loop start mode, an FXS port is notified of an off-hook event by detecting the change in amount of current flow. With ground start mode, an FXS port is notified of an off-hook event through the insertion of a coin at the peer end.