![[ICO]](/icons/blank.gif) | Name | Last modified | Size | Description |
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![[ ]](/icons/layout.gif) | 103A_Interface_Specification_Feb67.pdf | 2014-07-19 02:10 | 2.1M | |
![[ ]](/icons/layout.gif) | 103E_103G_103H_Interface_Specification_Oct68.pdf | 2014-11-14 17:37 | 1.4M | |
![[ ]](/icons/layout.gif) | 103F_Interface_Specification_May64.pdf | 2014-07-19 02:10 | 1.7M | |
![[ ]](/icons/layout.gif) | 150_Baud_Private_Line_Channels_Interface_Specification_Feb68.pdf | 2014-07-19 02:11 | 4.4M | |
![[ ]](/icons/layout.gif) | 201A_201B_Interface_Specification_Sep62.pdf | 2014-11-14 17:37 | 1.5M | |
![[ ]](/icons/layout.gif) | 201A_201B_Interface_Specification_Supplement_2_Nov68.pdf | 2014-11-14 17:37 | 109K | |
![[ ]](/icons/layout.gif) | 201A_and_201B_Interface_Specification_Aug69.pdf | 2014-07-19 02:10 | 2.0M | |
![[ ]](/icons/layout.gif) | 202C_and_202D_Interface_Specification_May64.pdf | 2014-07-19 02:10 | 3.5M | |
![[ ]](/icons/layout.gif) | 203_Data_Set_Technical_Reference_Jun70.pdf | 2014-11-14 17:37 | 3.9M | |
![[ ]](/icons/layout.gif) | 301B_Interface_Specification_Mar67.pdf | 2014-11-14 17:37 | 533K | |
![[ ]](/icons/layout.gif) | 303_Wideband_Data_Stations_Technical_Reference_Aug66.pdf | 2014-11-14 17:37 | 3.1M | |
![[ ]](/icons/layout.gif) | 303_Wideband_Data_Stations_Technical_Reference_Supplement_1_Mar69.pdf | 2014-11-14 17:37 | 363K | |
![[ ]](/icons/layout.gif) | 591-014-100_Data_Set_103A_Identification_and_Operation_Jan67.pdf | 2014-11-14 17:37 | 656K | |
![[ ]](/icons/layout.gif) | 591-014-200_Data_Set_103A_Installation_and_Connections_Jan67.pdf | 2014-11-14 17:37 | 423K | |
![[ ]](/icons/layout.gif) | 591-014-300_Data_Set_103A_Maintenance_Nov64.pdf | 2014-11-14 17:37 | 58K | |
![[ ]](/icons/layout.gif) | 591-014-500_Data_Set_103A_Test_Procedures_Dec67.pdf | 2014-11-14 17:37 | 582K | |
![[ ]](/icons/layout.gif) | 801A_Automatic_Calling_Unit_Interface_Specification_Mar64.pdf | 2014-11-14 17:37 | 952K | |
![[ ]](/icons/layout.gif) | 801C_Automatic_Calling_Unit_Interface_Specification_Sep65.pdf | 2014-11-14 17:38 | 2.0M | |
![[ ]](/icons/layout.gif) | 40000_Bell_System_Technical_Reference_Catalog_Dec75.pdf | 2015-04-25 01:42 | 1.4M | |
![[ ]](/icons/layout.gif) | 41003_150_Baud_Private_Line_Channels_Interface_Specification_Sep75.pdf | 2015-04-25 01:43 | 3.4M | |
![[ ]](/icons/layout.gif) | 41104_Data_Set_113A_Interface_Specification_May69.pdf | 2015-04-25 01:43 | 2.1M | |
![[ ]](/icons/layout.gif) | 41401_Data_Sets_401A_and_401E_Apr66.pdf | 2015-04-25 01:43 | 1.8M | |
![[ ]](/icons/layout.gif) | Bell_Modem_Types_Oct69.pdf | 2014-11-14 17:38 | 1.1M | |
![[ ]](/icons/layout.gif) | Data_Access_Arangement_Preliminary_Technical_Reference_Nov68.pdf | 2014-11-14 17:38 | 1.2M | |
![[ ]](/icons/layout.gif) | PUB4000_Bell_System_Technical_Reference_Catalog_May72.pdf | 2014-07-19 01:26 | 2.1M | |
![[ ]](/icons/layout.gif) | X303A_Wideband_Data_Stations_Preliminary_Interface_Specification_Oct64.pdf | 2014-11-14 17:38 | 1.9M | |
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