Landslide UMTS Nodal.
1.In UMTS test case, select Test Activity as "Session Loading Test".
2.Under Settings tab configure "Session Pending Time(s)" and "Session Hold Time(s)" as required, for example 10 seconds and 20 seconds respectively.
Snapshot for reference is as below:
Above steps can be implemented in other test case as well such as GGSN Nodal,MME Nodal,SGW Nodal,PGW Nodal,HSS Nodal etc.