In preparation for VoLTE, the MME Nodal test case was updated to support VoLTE related PCO configuration information. The GUI now allows this PCO information to be configured on the S1-MME->NAS->Protocol Configuration Options pane and on the S11->Protocol Configuration pane when the test is emulating the SGW. The S11->Protocol Configuration Options are only configurable when the associated S1-MME->NAS->Protocol Configuration Options->Additional Parameters have been enabled.