Definitions for "Ground start"
Keywords:  momentarily, pbx, telephony, hook, loop
A telephony term describing a signaling method whereby one station detects that a circuit is grounded at the other end.
This is a type of analog voice grade access line signaling that requires the customer interface to provide a ground on the ring conductor at the network interface to initiate service requests.
A way of signaling on the subscribers trunks how the wires are grounded in order to get dialtone. This is very important to know when ordering your service from your local company. PBXs generally work best on ground start trunks. Single line phones and key systems tend to work best with "loop start" grounding.