| Parent directory/ | - | - |
| retronetcall-11-eng-Classic_PCM30_with_channel-associated_signaling_sd.mp4 | 71.8 MiB | 2025-Mar-01 09:12 |
| retronetcall-9-eng-Group_4_Facsimile_Service_Fax_G4_sd.mp4 | 78.5 MiB | 2024-Aug-09 22:09 |
| retronetcall-4-eng-Introduction_to_the_X21_interface_sd.mp4 | 78.7 MiB | 2023-Mar-04 17:16 |
| retronetcall-6-eng-Teletex_The_brief_abandoned_step_between_Telex_and_Telefax_sd.mp4 | 82.8 MiB | 2023-Jun-11 12:14 |
| retronetcall-7-eng-Teletext_A_digital_medium_transcending_a_factor_of_10_in_technical_progress_sd.mp4 | 84.6 MiB | 2023-Jul-07 11:33 |
| retronetcall-1-eng-OCTOI_project_status_update_Nov_2022_sd.mp4 | 88.5 MiB | 2022-Dec-25 01:20 |
| retronetcall-3-eng-Datex-L_The_German_CSPDN_Circuit_Switched_Public_Data_Network_sd.mp4 | 93.8 MiB | 2023-Feb-02 14:23 |
| retronetcall-5-eng-E1_The_analog_side_part_1_sd.mp4 | 102.6 MiB | 2023-May-05 08:53 |
| retronetcall-2-eng-ISDN_B-Channel_protocols_X75_V120_V110_T70_sd.mp4 | 113.8 MiB | 2022-Dec-25 01:26 |
| retronetcall-12-eng-Nokia_TCSM2_a_bank_of_TRAUs_with_E1_interfaces_Part_2_the_working_state_sd.mp4 | 128.9 MiB | 2025-Mar-01 09:24 |
| retronetcall-8-eng-A_tour_of_DIVF_our_OCTOI_central_office_using_yate_dahdi-trunkdev_and_more_sd.mp4 | 139.5 MiB | 2024-Jan-24 21:52 |
| retronetcall-10-eng-Nokia_TCSM2_a_bank_of_TRAUs_with_E1_interfaces_Part_1_initial_examination_of_the_hardware_sd.mp4 | 287.5 MiB | 2024-Aug-10 00:12 |