Last updated 8/2020 MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz Language: English | Size: 491.20 MB | Duration: 1h 10m UMTS RRM Concepts Last updated 8/2020 MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz Language: English | Size: 1.09 GB | Duration: 2h 19m UMTS Fundamental Concepts Last updated 8/2020 MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz Language: English | Size: 873.87 MB | Duration: 1h 24m UMTS Air Interface Concepts |