{"acronym":"retronetcall","aspect_ratio":"16:9","updated_at":"2026-04-02T22:15:04.923+02:00","title":"RetroNetCall","schedule_url":"","slug":"contributors/retronetcall","event_last_released_at":"2025-03-01T00:00:00.000+01:00","link":"","description":"","webgen_location":"contributors/retronetcall","logo_url":"https://static.media.ccc.de/media/unknown.png","images_url":"https://static.media.ccc.de/media/contributors/retronetcall","recordings_url":"https://cdn.media.ccc.de/contributors/retronetcall","url":"https://api.media.ccc.de/public/conferences/retronetcall","events":[{"guid":"fe42ff17-c043-59bd-ba1f-456c52e64e77","title":"Nokia TCSM2, a bank of TRAUs with E1 interfaces: Part 2, the working state","subtitle":null,"slug":"retronetcall-20241002-falconia-nokia-tcsm2-part-2","link":"https://c3voc.de","description":"","original_language":"eng","persons":["Mychaela Falconia"],"tags":["12","2024","retronetcall","Virtual","retronetcall-eng","retronetcall","Berlin","Day 1"],"view_count":60,"promoted":false,"date":"2024-10-02T20:00:00.000+02:00","release_date":"2025-03-01T00:00:00.000+01:00","updated_at":"2026-02-12T21:45:14.925+01:00","length":3810,"duration":3810,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/12-fe42ff17-c043-59bd-ba1f-456c52e64e77.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/12-fe42ff17-c043-59bd-ba1f-456c52e64e77_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/12-fe42ff17-c043-59bd-ba1f-456c52e64e77.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/12-fe42ff17-c043-59bd-ba1f-456c52e64e77.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20241002-falconia-nokia-tcsm2-part-2","url":"https://api.media.ccc.de/public/events/fe42ff17-c043-59bd-ba1f-456c52e64e77","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"02fb61e5-19d7-5541-b91e-fa5240573f01","title":"Teletext: A digital medium transcending a factor of 10⁶ in technical progress","subtitle":null,"slug":"retronetcall-20230705-casandro-teletext","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Christian \"casandro\" Berger"],"tags":["retronetcall","7","2023","retronetcall","Berlin"],"view_count":266,"promoted":false,"date":"2023-07-05T20:00:00.000+02:00","release_date":"2023-07-07T00:00:00.000+02:00","updated_at":"2025-12-28T13:15:09.873+01:00","length":2827,"duration":2827,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/7-02fb61e5-19d7-5541-b91e-fa5240573f01.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/7-02fb61e5-19d7-5541-b91e-fa5240573f01_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/7-02fb61e5-19d7-5541-b91e-fa5240573f01.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/7-02fb61e5-19d7-5541-b91e-fa5240573f01.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20230705-casandro-teletext","url":"https://api.media.ccc.de/public/events/02fb61e5-19d7-5541-b91e-fa5240573f01","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"a5ad539a-0101-5958-9f38-f3ee1b8e23a7","title":"Group 4 Facsimile Service (Fax G4)","subtitle":null,"slug":"retronetcall-20240306-laforge-fax-g4","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","9","2024","retronetcall","Berlin"],"view_count":70,"promoted":false,"date":"2024-03-06T20:00:00.000+01:00","release_date":"2024-08-09T00:00:00.000+02:00","updated_at":"2026-02-11T21:15:14.680+01:00","length":3542,"duration":3542,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/9-a5ad539a-0101-5958-9f38-f3ee1b8e23a7.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/9-a5ad539a-0101-5958-9f38-f3ee1b8e23a7_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/9-a5ad539a-0101-5958-9f38-f3ee1b8e23a7.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/9-a5ad539a-0101-5958-9f38-f3ee1b8e23a7.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20240306-laforge-fax-g4","url":"https://api.media.ccc.de/public/events/a5ad539a-0101-5958-9f38-f3ee1b8e23a7","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"9e1e297f-1747-543b-ae15-0f93f5d91f26","title":"Classic PCM30 with channel-associated signaling","subtitle":null,"slug":"retronetcall-20240807-laforge-pcm30-cas","link":"https://c3voc.de","description":"","original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["11","2024","retronetcall","Virtual","retronetcall-eng","retronetcall","Berlin","Day 1"],"view_count":34,"promoted":false,"date":"2024-08-07T20:00:00.000+02:00","release_date":"2025-03-01T00:00:00.000+01:00","updated_at":"2026-03-23T23:15:04.547+01:00","length":2831,"duration":2831,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/11-9e1e297f-1747-543b-ae15-0f93f5d91f26.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/11-9e1e297f-1747-543b-ae15-0f93f5d91f26_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/11-9e1e297f-1747-543b-ae15-0f93f5d91f26.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/11-9e1e297f-1747-543b-ae15-0f93f5d91f26.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20240807-laforge-pcm30-cas","url":"https://api.media.ccc.de/public/events/9e1e297f-1747-543b-ae15-0f93f5d91f26","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"4bf1a7cd-546b-5756-9a27-66a3d2f70939","title":"OCTOI project status update (Nov 2022)","subtitle":null,"slug":"retronetcall-20221109-laforge-octoi-status-update","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","1","2022","retronetcall","Berlin"],"view_count":219,"promoted":false,"date":"2022-11-09T20:00:00.000+01:00","release_date":"2022-12-25T00:00:00.000+01:00","updated_at":"2025-11-14T14:30:03.722+01:00","length":3189,"duration":3189,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/1-4bf1a7cd-546b-5756-9a27-66a3d2f70939.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/1-4bf1a7cd-546b-5756-9a27-66a3d2f70939_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/1-4bf1a7cd-546b-5756-9a27-66a3d2f70939.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/1-4bf1a7cd-546b-5756-9a27-66a3d2f70939.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20221109-laforge-octoi-status-update","url":"https://api.media.ccc.de/public/events/4bf1a7cd-546b-5756-9a27-66a3d2f70939","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"cd003e0f-cd1e-5c6b-8210-4c57270a1d3e","title":"ISDN B-Channel protocols (X.75, V.120, V.110, T.70, ...)","subtitle":null,"slug":"retronetcall-20221207-laforge-isdn-b-channel-protocols","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","2","2022","retronetcall","Berlin"],"view_count":743,"promoted":false,"date":"2022-12-07T20:00:00.000+01:00","release_date":"2022-12-25T00:00:00.000+01:00","updated_at":"2026-04-02T22:15:04.919+02:00","length":3864,"duration":3864,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/2-cd003e0f-cd1e-5c6b-8210-4c57270a1d3e.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/2-cd003e0f-cd1e-5c6b-8210-4c57270a1d3e_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/2-cd003e0f-cd1e-5c6b-8210-4c57270a1d3e.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/2-cd003e0f-cd1e-5c6b-8210-4c57270a1d3e.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20221207-laforge-isdn-b-channel-protocols","url":"https://api.media.ccc.de/public/events/cd003e0f-cd1e-5c6b-8210-4c57270a1d3e","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"c6b7df26-e253-53ef-a6bd-33c466302cc6","title":"E1: The analog side (part 1)","subtitle":null,"slug":"retronetcall-20230503-tnt-e1-analog-side-part-1","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Sylvain \"tnt\" Munaut"],"tags":["retronetcall","5","2023","retronetcall","Berlin"],"view_count":163,"promoted":false,"date":"2023-05-03T20:00:00.000+02:00","release_date":"2023-05-05T00:00:00.000+02:00","updated_at":"2026-03-25T07:15:04.525+01:00","length":4054,"duration":4054,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/5-c6b7df26-e253-53ef-a6bd-33c466302cc6.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/5-c6b7df26-e253-53ef-a6bd-33c466302cc6_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/5-c6b7df26-e253-53ef-a6bd-33c466302cc6.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/5-c6b7df26-e253-53ef-a6bd-33c466302cc6.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20230503-tnt-e1-analog-side-part-1","url":"https://api.media.ccc.de/public/events/c6b7df26-e253-53ef-a6bd-33c466302cc6","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"93d0b5de-6a62-56ae-955b-89832b0504de","title":"A tour of DIVF, our OCTOI central office using yate, dahdi-trunkdev and more","subtitle":null,"slug":"retronetcall-20231206-laforge-octoi-divf-tour","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","8","2023","retronetcall","Berlin"],"view_count":61,"promoted":false,"date":"2023-12-06T20:00:00.000+01:00","release_date":"2024-01-24T00:00:00.000+01:00","updated_at":"2026-03-15T01:30:03.433+01:00","length":4287,"duration":4287,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/8-93d0b5de-6a62-56ae-955b-89832b0504de.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/8-93d0b5de-6a62-56ae-955b-89832b0504de_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/8-93d0b5de-6a62-56ae-955b-89832b0504de.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/8-93d0b5de-6a62-56ae-955b-89832b0504de.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20231206-laforge-octoi-divf-tour","url":"https://api.media.ccc.de/public/events/93d0b5de-6a62-56ae-955b-89832b0504de","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"0fef8f8d-c93c-5e64-aa69-bfa6a4ce1eb1","title":"Teletex: The brief abandoned step between Telex and Telefax","subtitle":null,"slug":"retronetcall-20230607-laforge-teletex","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","6","2023","retronetcall","Berlin"],"view_count":292,"promoted":false,"date":"2023-06-07T20:00:00.000+02:00","release_date":"2023-06-11T00:00:00.000+02:00","updated_at":"2026-03-22T21:30:06.062+01:00","length":2892,"duration":2892,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/6-0fef8f8d-c93c-5e64-aa69-bfa6a4ce1eb1.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/6-0fef8f8d-c93c-5e64-aa69-bfa6a4ce1eb1_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/6-0fef8f8d-c93c-5e64-aa69-bfa6a4ce1eb1.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/6-0fef8f8d-c93c-5e64-aa69-bfa6a4ce1eb1.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20230607-laforge-teletex","url":"https://api.media.ccc.de/public/events/0fef8f8d-c93c-5e64-aa69-bfa6a4ce1eb1","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"2ae008dc-d93f-5659-b228-92cc0a7d38c4","title":"Nokia TCSM2, a bank of TRAUs with E1 interfaces: Part 1, initial examination of the hardware","subtitle":null,"slug":"retronetcall-20240605-falconia-nokia-tcsm2-part-1","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Mychaela Falconia"],"tags":["retronetcall","10","2024","retronetcall","Berlin"],"view_count":61,"promoted":false,"date":"2024-06-05T20:00:00.000+02:00","release_date":"2024-08-10T00:00:00.000+02:00","updated_at":"2026-01-31T13:15:07.684+01:00","length":4342,"duration":4342,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/10-2ae008dc-d93f-5659-b228-92cc0a7d38c4.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/10-2ae008dc-d93f-5659-b228-92cc0a7d38c4_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/10-2ae008dc-d93f-5659-b228-92cc0a7d38c4.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/10-2ae008dc-d93f-5659-b228-92cc0a7d38c4.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20240605-falconia-nokia-tcsm2-part-1","url":"https://api.media.ccc.de/public/events/2ae008dc-d93f-5659-b228-92cc0a7d38c4","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"6ba8f11b-7f87-5253-bf2d-31271619eef9","title":"Datex-L: The German CSPDN (Circuit Switched Public Data Network)","subtitle":null,"slug":"retronetcall-20230201-laforge-datex-l-cspdn","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","3","2023","retronetcall","Berlin"],"view_count":345,"promoted":false,"date":"2023-02-01T20:00:00.000+01:00","release_date":"2023-02-02T00:00:00.000+01:00","updated_at":"2026-03-24T01:30:02.698+01:00","length":3177,"duration":3177,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/3-6ba8f11b-7f87-5253-bf2d-31271619eef9.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/3-6ba8f11b-7f87-5253-bf2d-31271619eef9_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/3-6ba8f11b-7f87-5253-bf2d-31271619eef9.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/3-6ba8f11b-7f87-5253-bf2d-31271619eef9.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20230201-laforge-datex-l-cspdn","url":"https://api.media.ccc.de/public/events/6ba8f11b-7f87-5253-bf2d-31271619eef9","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]},{"guid":"7097dc63-9c88-50b6-8521-7ddbe5cc1116","title":"Introduction to the X.21 interface","subtitle":null,"slug":"retronetcall-20230201-laforge-x21-intro","link":"https://c3voc.de","description":null,"original_language":"eng","persons":["Harald \"LaF0rge\" Welte"],"tags":["retronetcall","4","2023","retronetcall","Berlin"],"view_count":195,"promoted":false,"date":"2023-03-01T20:00:00.000+01:00","release_date":"2023-03-04T00:00:00.000+01:00","updated_at":"2026-03-02T17:45:05.755+01:00","length":2962,"duration":2962,"thumb_url":"https://static.media.ccc.de/media/contributors/retronetcall/4-7097dc63-9c88-50b6-8521-7ddbe5cc1116.jpg","poster_url":"https://static.media.ccc.de/media/contributors/retronetcall/4-7097dc63-9c88-50b6-8521-7ddbe5cc1116_preview.jpg","timeline_url":"https://static.media.ccc.de/media/contributors/retronetcall/4-7097dc63-9c88-50b6-8521-7ddbe5cc1116.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/contributors/retronetcall/4-7097dc63-9c88-50b6-8521-7ddbe5cc1116.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/retronetcall-20230201-laforge-x21-intro","url":"https://api.media.ccc.de/public/events/7097dc63-9c88-50b6-8521-7ddbe5cc1116","conference_title":"RetroNetCall","conference_url":"https://api.media.ccc.de/public/conferences/retronetcall","related":[]}]}