{% dot sgsn_tests.svg digraph G { rankdir=LR; SGSN [label="SGSN\nosmo-sgsn",shape="box"]; ATS [label="ATS\nSGSN_Tests.ttcn"];
ATS -> SGSN [label="Gb"]; SGSN-> ATS [label="Gp (GTP)"]; ATS -> SGSN [label="VTY"]; } %}