Upon the network receiving an indication that the call has been accepted, the network shall send a CONNECT message across the user-network interface to the calling user, and shall enter the Active state. As a network option, the Date/time information element may be included in the CONNECT message.
This message indicates to the calling user that a connection has been established through the network and stops a possible local indication of alerting.
On receipt of the CONNECT message, the calling user shall stop any user-generated alerting indications; may optionally send a CONNECT ACKNOWLEDGE message, and shall enter the active state. The network shall not take any action on receipt of a CONNECT ACKNOWLEDGE message when it perceives the call to be in the active state.