▁work ▁groups ▁in ▁order ▁to ▁produce ▁a ▁transport ▁application ▁tool ▁k it . ▁ ▁T ET RA ▁M MI ▁ ▁Service ▁ac quisition ▁adm its ▁different ▁author ised ▁agents ▁to ▁establish ▁communication ▁channels ▁between ▁different ▁services ▁by ▁calling ▁the ▁service ▁identity , ▁and ▁without ▁possess ing ▁the ▁complete ▁knowledge ▁of ▁the ▁I SS I , ▁G SS I , ▁or ▁any ▁other ▁T ET RA ▁related ▁communication ▁establishment ▁number ing ▁plan . ▁Service ▁ac quisition ▁is ▁admin ister ed ▁through ▁a ▁communication ▁rights ▁central ised ▁service ▁or ▁roll ▁allocation ▁server , ▁inter fac ed ▁into ▁the ▁T ET RA ▁core ▁network . ▁ ▁In ▁summary , ▁the ▁T ET RA ▁M MI ▁a ims ▁are ▁to : ▁▁ ▁Allow ▁any ▁given ▁agent ▁while ▁in ▁exercise , ▁to ▁explo it ▁any ▁given ▁radio ▁terminal ▁without ▁mater iel ▁constraint . ▁ ▁Prov ide ▁specific ▁transport ation ▁application ▁software ▁to ▁the ▁end - user ▁agents ▁( service ▁ac quisition , ▁fra ud , ▁and ▁ag gression ▁control ). ▁ ▁This ▁transport ▁application ▁tool - kit ▁has ▁been ▁produced ▁successfully ▁and ▁with ▁T ET RA ▁communication ▁technology ▁and ▁ass ures ▁for ▁the ▁public ▁transport ▁application ▁requirements ▁for ▁the ▁future ▁mentioned ▁here after . ▁ ▁The ▁home ▁( main ) ▁menu ▁presents ▁the ▁end ▁user ▁with ▁three ▁possibilities : ▁▁ ▁Service ▁ac quisition , ▁ ▁Status ▁SD S , ▁ ▁End - user ▁parameters . ▁ ▁Service ▁ac quisition ▁provides ▁a ▁means ▁of ▁virt ually ▁person alis ing ▁the ▁end ▁user ▁to ▁any ▁given ▁radio ▁terminal ▁and ▁onto