div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: zhao 210502 - Tietoverkkolaboratorio - TKK of Contents Standardization progress UMTS overview Session control related protocols in IMS PSTN connectivity principle Signalling flow example src=https:reader031fdocumentsinreader031viewer20220225095ad3b9647f8b9a665f8e1f41html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: zhao 210502 - Tietoverkkolaboratorio - TKK of Contents Standardization progress UMTS overview Session control related protocols in IMS PSTN connectivity principle Signalling flow example src=https:reader031fdocumentsinreader031viewer20220225095ad3b9647f8b9a665f8e1f41html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: zhao 210502 - Tietoverkkolaboratorio - TKK of Contents Standardization progress UMTS overview Session control related protocols in IMS PSTN connectivity principle Signalling flow example src=https:reader031fdocumentsinreader031viewer20220225095ad3b9647f8b9a665f8e1f41html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: zhao 210502 - Tietoverkkolaboratorio - TKK of Contents Standardization progress UMTS overview Session control related protocols in IMS PSTN connectivity principle Signalling flow example src=https:reader031fdocumentsinreader031viewer20220225095ad3b9647f8b9a665f8e1f41html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: zhao 210502 - Tietoverkkolaboratorio - TKK of Contents Standardization progress UMTS overview Session control related protocols in IMS PSTN...