AT&T Specifications

Section Date Issue Size Title
Spec. 38551917-03-014.52 MBAdjustment of Substation Apparatus
Spec. 3855 SB1930-09-012.14 MBAdjustment of Station Apparatus
Spec. 3855 SC1931-03-01632.20 KBAdjustment of Station Apparatus - Armature Stop Spring
Spec. 3855CP1931-03-16373.01 KBAdjustment of Station Apparatus
Spec. 38591922-08-011.88 MBSubstation Wiring Plans
Spec. 3859 SB1930-09-0111.54 MBStation Wiring Plans
Spec. 3859CP1931-04-15383.46 KBStation Wiring Plans
Spec. 41591922-01-014.63 MBMaintenance of Automatic Electric Co. Dials at Substations
Spec. 4159 SA1924-06-01688.04 KBMaintenance of Automatic Electric Co. Dials at Substations - New Tools and Methods
Spec. 4159CP1924-12-102347.65 KBMaintenance of Automatic Electric Co. Dials at Substations
Spec. 41701922-04-0112.00 MBSubstation and Private Branch Exchange Protector Installation
Spec. 4170 SA1924-12-012.59 MBSubstation and Private Branch Exchange Protector Installation - New Supplies and Methods
Spec. 44301925-01-01824.52 KBStations - Open Type Telephone Booths
Spec. 44481925-03-01770.18 KBStations - Apparatus for Deaf Subscribers
Spec. 44551925-07-012.76 MBStations - Public Telephone Signs
Spec. 44651926-01-012.62 MBStations - No. 7-J and No. 7-k Coin Collector - Maintenance
Spec. 45661926-02-0132.53 MBMachine Switching Stations
Spec. 4566 SB1930-06-011.50 MBDial and Manual Common Battery Stations - 584 Type Subscriber Set (Also Spec. 4588 Supp. A)
Spec. 4566 SC1930-11-012.32 MBDial and Manual Common Battery Stations - Subscriber Sets to Reduce Inductive Noise From External Sources (Also Spec. 4588 Supp. C)
Spec. 4566 SD1930-12-014.00 MBDial and Manual Common Battery Stations - Local Battery Talking, Common Battery Signaling Anti-Sidetone Sets (Also Spec. 4588 Supp. D)
Spec. 4566CP1931-10-101.45 MBDial System Stations
Spec. 45881928-05-0121.45 MBCommon Battery Manual Stations
Spec. 4588 SA1930-06-011.50 MBDial and Manual Common Battery Stations - 584 Type Subscriber Set (Also Spec. 4566 Supp. B)
Spec. 4588 SC1930-11-012.32 MBDial and Manual Common Battery Stations - Subscriber Sets to Reduce Inductive Noise From External Sources (Also Spec. 4566 Supp. C)
Spec. 4588 SD1930-12-014.00 MBDial and Manual Common Battery Stations - Local Battery Talking, Common Battery Signaling Anti-Sidetone Sets (Also Spec. 4566 Supp. D)
Spec. 45901927-04-013.94 MBStations - No. 50 Coin Collector - Installation
Spec. 46211926-06-011.54 MBStations - No. 530-A Subscriber Set for Outdoor Use
Spec. 46951927-10-011.45 MBField Maintenance of No. 12-Type Printer Set and Associated Apparatus
Spec. 47971929-01-011.31 MBTelephone Typewriter Stations - No. 12 Type Page Printer
Spec. 48001927-12-012.28 MBPublic Telephone Stations - Installation of Telephone Directories
Spec. 48101927-12-011.81 MBStations - Hand Telephone Sets