msc {
	bts [label="BTS (CF)"], bsc [label="BSC"];
	# this is for the Central Function Object
	---		[label="Initial state after initializing OML TEI"];

	bts <= bsc	[label="Start Request"];
	bts => bsc	[label="Reset Request Accept"];

	bts => bsc	[label="Negotiation Request"];
	bts <= bsc	[label="Negotiation Request ACK"];

	bts => bsc	[label="Start Result (Started)"];
	bts <= bsc	[label="Start Result ACK"];

	bts <= bsc	[label="Operational Info (Operational)"];
	bts => bsc	[label="Operational Info Accept"];

	# continue with IS, TRXC, TF
}