This object specifies the forward signal marking that all DNIS, dialed number, digits have been sent, telling the receiving exchange digit collection for the called number is complete. This is the specific trigger that lets the terminating exchange stop waiting for more dialed digits and begin routing/ringing, so a delayed or missing signal here directly translates into call-setup latency or premature timeout on that call. After sending the final digit of a 10-digit DNIS, the gateway sends this signal so the far end immediately proceeds to route the call rather than waiting out its inter-digit timer for a digit that is not coming.