digraph G {
	net [label="gsm_network"]
	bts [label="gsm_bts"]
	trx [label="gsm_bts_trx"]
	ts [label="gsm_bts_trx_ts"]
	lchan [label="gsm_lchan"]
	sub [label="gsm_subscriber"]
	subcon [label="gsm_subscriber_conn"]
	sccpcon [label="osmo_bsc_sccp_con"]
	subgrp [label="gsm_subscriber_group"]

	net -> bts
	bts -> trx
	trx -> ts
	ts -> lchan

	lchan -> ts
	ts -> trx
	trx -> bts
	bts -> net

	lchan -> subcon

	subcon -> sub
	subcon -> sccpcon
	subcon -> lchan
	subcon -> lchan [label="ho_lchan"]
	subcon -> bts
	subcon -> lchan [label="secondary_lchan"]

	sub -> subgrp
	subgrp -> net
}