3.2.3 Initialization

The MSB Protocol initializes when the client receives an .nsc file. When that file is received, the client MUST begin listening on the UDP port that is specified by the .nsc file and join the IP multicast group that is specified by the .nsc file.

The Open timer SHOULD be used. If the Open timer is used, it MUST be started at this time, and it MUST be stopped when either an MSB packet or a Beacon packet is received. The Open timer MUST NOT expire in less than 10 seconds. It is recommended that the Open timer expires if no such packets are received for 20 seconds.