Section	Date	Issue	Size	Title
40000	1972-01-01		1000.55 KB	Bell System Technical References - Catalog
40000	1972-05-01		2.13 MB	Bell System Technical References - Catalog
40000	1975-12-01		1.38 MB	Bell System Technical References - Catalog [326-299]
40000	1980-01-01		1.42 MB	Bell System Technical References - Catalog [326-299]
40000	1982-01-01		1.79 MB	Bell System Technical References - Catalog [326-299]
40000 A	1980-07-01		69.05 KB	Bell System Technical References - Catalog [326-967]
40000 A	1982-01-01		189.72 KB	Bell System Technical References - Catalog [326-340]
41001	1967-12-01		438.56 KB	30-Baud Private Line Channels - Interface Specification [326-518]
41002	1967-12-01		457.97 KB	45-, 55- & 75-Baud Private Line Channels - Interface Specification [326-524]
41003	1968-02-01		4.41 MB	150 Baud Private Line Channels - Interface Specification
41003	1975-09-01		2.88 MB	150 Baud Private Line Channels - Interface Specification [326-536]
41004	1973-10-01		3.72 MB	Data Communications Using Voiceband Private Line Channels [326-584]
41005	1971-05-01		12.06 MB	Data Communications Using the Switched Telecommunications Network
41008	1974-07-01		2.02 MB	Transmission Parameters Affecting Voiceband Data Transmission - Description of Parameters [326-305]
41009	1975-05-01		2.67 MB	Transmission Parameters Affecting Voiceband Data Transmission - Measuring Techniques [326-310]
41011	1973-05-01		719.93 KB	Transmission Specifications for Voice Grade Private Line Protective Relaying Channels [326-304]
41012	1973-06-01		3.78 MB	1A Data Station, Multichannel Arrangement Used in Provision of Two-Point Channelizing Service [326-317]
41013	1975-07-01		627.05 KB	Transmission Specifications for Low Speed Signaling System Channels [326-318]
41014 S	1976-12-01		155.24 KB	Data Communications Using DATAPHONE Select-A-Station Service - Supplement [326-131]
41021	1973-03-01		1.57 MB	Digital Data System - Channel Interface Specifications - Preliminary [326-342]
41022	1974-09-01		577.21 KB	Multistation DATAPHONE Digital Service (USOC DDZ) - Preliminary [326-306]
41025	1976-04-01		1.52 MB	Transaction Network Polled Access Interface Specifications - Preliminary [326-115]
41026	1976-04-01		3.07 MB	Transaction Network Dial In Interface Specification - Preliminary [326-114]
41027	1976-04-01		3.56 MB	Transaction Network Synchrous [sic - Synchronous] Interface Specifications - Preliminary [326-113]
41101	1967-02-01		2.12 MB	Data Set 103A - Interface Specification
41102	1968-10-01		1.36 MB	Data Set 103E - Data Set 103G - Data Set 103H - Interface Specification
41103	1964-05-01		1.71 MB	Data Set 103F - Interface Specification
41104	1969-05-01		2.12 MB	Data Set 113A - Interface Specification
41105	1971-10-01		2.60 MB	113-Type Data Station - Interface Specification [326-319]
41201	1962-09-01		1.46 MB	Data Sets 201A and 201B - Interface Specifications
41201	1969-08-01		2.02 MB	Data Sets 201A and 201B
41201 S2	1968-11-01		109.10 KB	Data Sets 201A and 201B - Interface Specification
41202	1964-05-01		3.48 MB	Data Sets 202C and 202D - Interface Specification
41204	1970-06-01		3.86 MB	Data Set 203-Type
41204	1974-04-01		3.14 MB	Data Set 203-Type - Interface Specification
41209	1973-11-01		1.88 MB	Data Set 208A - Interface Specification [326-368]
41211	1973-08-01		1.88 MB	Data Set 208B - Interface Specification [326-373]
41213	1974-05-01		3.67 MB	Data Set 209A - Interface Specification - Preliminary
41214	1976-10-01		2.33 MB	Data Set 212A - Interface Specification - Preliminary [326-330]
41301	1967-03-01		532.63 KB	Data Set 301B - Interface Specification
41302	1964-10-01		1.90 MB	Wideband Data Stations - X303A Type - Interface Specification - Preliminary
41302	1966-08-01		3.10 MB	Wideband Data Stations - 303 Type
41302	1974-12-01		4.24 MB	Wideband Data Stations - 303 Type [326-403]
41302 S1	1969-03-01		363.22 KB	Wideband Data Stations - 303 Type
41303	1970-08-01		1.94 MB	The Display Data Set F-58167 Used to Provide Computer Access Service for PICTUREPHONE Stations - Preliminary [326-591]
41304	1971-07-01		1.39 MB	Wideband Data Set - 306-Type - Interface Specification [326-411]
41401	1966-04-01		1.76 MB	Data Sets 401A and 401E
41403	1965-09-01		965.75 KB	Data Set 401J - Interface Specification [326-422]
41405	1964-11-01		1.35 MB	Data Sets 402C and 402D - Interface Specification [326-446]
41408	1975-06-01		2.05 MB	Data Set 407 - Interface Specification - Preliminary [326-456]
41449	1989-07-01	2.0	17.57 MB	AT&T Integrated Services Digital Network (ISDN) Primary Rate Inteface Specification
41450	1973-03-01		2.37 MB	Digital Data System - Data Service Unit - Interface Specifications - Preliminary [326-460]
41450 A	1974-11-01		145.32 KB	Digital Data System - Data Service Unit - Interface Specifications - Preliminary [326-462]
41451	1977-05-01		1023.04 KB	1.544 Mbps Digital Service - Channel Interface Specifications (Including 1.344 Mbps Service Option) [326-463]
41452	1976-03-01		2.59 MB	DATAPHONE Switched Digital Service - Data Service Unit - Interface Specifications - Preliminary [326-118]
41458	1996-10-01		327.26 KB	Special Access Connections to the AT&T Network
41459	1990-07-01		6.94 MB	AT&T Integrated Services Digital Network (ISDN) Primary Rate Inteface and Special Application Specification - User - Network Interface Description
41459	1999-06-01		1.67 MB	AT&T Network Integrated Services Digital Network (ISDN) Primary Rate Interface and Special Application Specification - User-Network Interface Description
41601	1964-03-01		951.54 KB	Data Auxiliary Set 801A (Automatic Calling Unit) - Interface Specification
41602	1965-09-01		2.03 MB	Data Auxiliary Set 801C (Automatic Calling Unit) - Interface Specification
41603	1976-11-01		1.23 MB	801C - L1/2 Data Auxiliary Set - Interface Specification - Preliminary [326-507]
41701	1967-09-01		1021.96 KB	83B3 Teletypewriter Selective Calling System [326-530]
41702	1971-10-01		2.53 MB	85A1 and 85A2 Selective Calling Service Stations [326-533]
41703	1969-06-01		1.84 MB	86A1 and 86A2 Data Selective Calling Service Stations [326-541]
41703 ES	1969-06-01		75.43 KB	86A1 and 86A2 Data Selective Calling Service Stations - Errata Sheet
41704	1968-11-01		1.79 MB	86B-Types - Data Selecting Calling System Stations [326-121]
41704 ES			42.04 KB	86B-Types - Data Selecting Calling System Stations - Errata Sheet
41705	1971-05-01		1.22 MB	Data Line Concentrator System (DLCS) - Arrangements [326-578]
41706	1968-09-01		2.68 MB	Model 37 Teletypewriter Stations for DATA-PHONE Service [326-222]
41707	1969-09-01		4.27 MB	DATASPEED Type 4 System [326-514]
41708	1970-06-01		2.54 MB	Type 5 DATASPEED System [326-516]
41709	1970-01-01		2.26 MB	Receive--Only DATASPEED Printer Station Arrangements - System Interface Specification
41710	1970-08-01		888.67 KB	4200 Series Magnetic Tape Terminals [326-550]
41712	1970-12-01		1.77 MB	Type 2 DATASPEED System [326-504]
41713	1971-08-01		1.25 MB	Model 33, 35, and 37 Stations for Point-to-Point Private Line Service [326-553]
41714	1974-01-01		902.72 KB	9131 Teletypewriter - Selective Calling Station Arrangement [326-555]
41715	1973-12-01		3.20 MB	DATASPEED 40 Stations for DATAPHONE Service - Preliminary [326-582]
41716	1976-04-01		5.07 MB	Synchronous DATASPEED 40/4 Stations - Preliminary [326-122]
41801			1004.78 KB	Data Access Arrangement CDT
41803	1972-10-01		2.39 MB	Acoustic and Inductive Coupling for Data and Voice Transmission [326-575]
41804	1976-07-01		5.08 MB	Switched Network Transaction Telephone System Inferfacing with Audio Response Units [326-576]
41805	1977-04-01		5.83 MB	Switched Network Transaction Telephone System Inferfacing with Transmission Control Units (Primary Response Mode Frequency Shift Keying) [326-585]
41806	1977-01-01		2.11 MB	Transaction III Terminal - Preliminary [326-577]
42102	1973-02-01		885.82 KB	Voice Connecting Arrangement CDX - Interface Specification [326-683]
42103	1970-06-01		1.26 MB	Voice Connecting Arrangements CEBAX, CEBBX - Interface Specification - Preliminary
42104	1970-07-01		1.05 MB	Voice Connecting Arrangement LOH - Interface Specification - Preliminary
42105	1970-07-01		1.11 MB	Voice Connecting Arrangement LVH - Interface Specification - Preliminary
42106	1970-08-01		1.12 MB	Voice Connecting Arrangement CEBAV - Interface Specification - Preliminary
42107	1970-08-01		1.08 MB	Voice Connecting Arrangement CEBAW - Interface Specification - Preliminary [326-711]
42108	1974-04-01		859.82 KB	Voice Connecting Arrangement FTP - Interface Specification - Preliminary
42109	1975-11-01		908.41 KB	Protective Connecting Arrangement FTM - Interface Specification - Preliminary [326-714]
42110	1981-06-01		578.36 KB	Interface Arrangement POP - Specifications - Preliminary [326-951]
42201	1975-10-01		1.12 MB	Protective Connecting Arrangements CAU/SU3/SU4/SU6 - Interface Specification [326-715]
42202	1975-04-01		945.51 KB	Protective Connecting Arrangement SU7QW - Interface Specification [326-719]
42203	1970-01-01		426.42 KB	Voice Connecting Arrangement RTT - Interface Specification - Preliminary [326-710]
42203 A	1974-10-01		60.30 KB	Voice Connecting Arrangement RTT - Interface Specification - Preliminary
42205	1970-06-01		675.48 KB	Voice Connecting Arrangement RCZ - Interface Specification - Preliminary
42205	1975-07-01		700.05 KB	Protective Connecting Arrangement RCZ - Interface Specification [326-702]
42206	1971-02-01		413.48 KB	Connecting Arrangement RC1 - Interface Specification - Preliminary
42206	1971-06-01		428.97 KB	Connecting Arrangement RC1 - Interface Specification - Preliminary
42206 A	1974-10-01		274.18 KB	Connecting Arrangement RC1 - Interface Specification - Preliminary
42207	1975-02-01		1.72 MB	Protective Connecting Arrangements C2ACP/C2AKS [326-670]
42208	1974-02-01		1.03 MB	Voice Connecting Arrangement STC - Interface Specification - Preliminary
42209	1971-06-01		996.51 KB	Voice Connecting Arrangements REMZR, RDY - Interface Specification - Preliminary
42210	1971-06-01		1.10 MB	Voice Connecting Arrangements SU6AQ, STS - Interface Specification - Preliminary [326-820]
42211	1971-11-01		910.06 KB	Voice Connecting Arrangement CEZ - Interface Specification - Preliminary
42212	1977-03-01		1.23 MB	Voice Connecting Arrangement STP, C2F - Interface Specification - Preliminary [326-827]
42213	1974-10-01		685.66 KB	Connecting Arrangement AD1 - Interface Specification - Preliminary
42214	1974-12-01		781.62 KB	Protective Connecting Arrangement GTS - Interface Specification - Preliminary [326-831]
42301	1969-02-01		1.21 MB	Voice Connecting Arrangement 2A - Interface Specification - Preliminary [326-604]
42302	1969-06-01		1.11 MB	Voice Connecting Arrangement CDA (1A) - Interface Specification - Preliminary [326-602]
42303	1969-06-01		1.18 MB	Voice Connecting Arrangement 3A - Interface Specification - Preliminary [326-606]
42304	1969-07-01		1.11 MB	Voice Connecting Arrangement CD1 - Interface Specification - Preliminary
42305	1969-08-01		976.14 KB	Voice Connecting Arrangement CD4 - Interface Specification - Preliminary [326-638]
42306	1969-08-01		1.12 MB	Voice Connecting Arrangement CD5 - Interface Specification - Preliminary [326-640]
42307	1969-10-01		851.05 KB	Voice Connecting Arrangement CDY - Interface Specification - Preliminary
42401	1974-03-01		1.18 MB	Voice Connecting Arrangement CDH and Connecting Arrangement CBF - Interface Specification
42402	1974-03-01		1.44 MB	Voice Connecting Arrangements CD7, CD8, and CD9 and Connecting Arrangement CBF - Interface Specification
42403	1970-10-01		1.21 MB	Voice Connecting Arrangement CET - Interface Specification - Preliminary
42403 A	1974-06-01		84.95 KB	Voice Connecting Arrangement CET - Interface Specification - Addendum
42404	1969-12-01		1.11 MB	Voice Connecting Arrangement CD6 - Interface Specification - Preliminary
42405	1970-04-01		1.17 MB	Voice Connecting Arrangement CED - Interface Specification - Preliminary
42405 A	1974-06-01		77.01 KB	Voice Connecting Arrangement CED - Interface Specification - Addendum
42406	1976-07-01		1.13 MB	Protective Connecting Arrangement C22 - Interface Specification - Preliminary [326-656]
42407	1971-10-01		1.04 MB	Voice Connecting Arrangements C24, C2H - Interface Specification - Preliminary
42408	1971-10-01		1.06 MB	Voice Connecting Arrangements C27, C2K - Interface Specification - Preliminary
42501	1969-08-01		1.05 MB	Voice Connecting Arrangement CDQ4W - Interface Specification - Preliminary
42502	1971-06-01		1.43 MB	Voice Connecting Arrangements CDQ2W, CDQ2X - Interface Specification - Preliminary [326-667]
42503	1971-02-01		1.01 MB	Voice Connecting Arrangement C234W - Interface Specification - Preliminary [326-659]
42504	1971-09-01		902.37 KB	Voice Connecting Arrangement C232W - Interface Specification - Preliminary
42505	1971-10-01		1.10 MB	Voice Connecting Arrangement CDQ4X - Interface Specification - Preliminary [326-750]
42601	1970-04-01		630.41 KB	Voice Connecting Arrangement CEK - Interface Specification - Preliminary
42601 S	1970-06-05		29.92 KB	Voice Connecting Arrangement CEK - Interface Specification - Supplement
42602	1972-05-01		663.14 KB	Specification CAK - Customer-Provided Telephone Set Housings - Preliminary
42603	1970-12-01		685.12 KB	Connecting Arrangements C1V, RCX - Interface Specification - Preliminary
42603	1972-06-01		1.01 MB	Connecting Arrangements C1V, RCX, GC2 - Interface Specification - Preliminary
42604	1971-07-01		893.39 KB	Connecting Arrangement C25 - Interface Specification - Preliminary
42605	1975-06-01		1.02 MB	Protective Connecting Arrangement CTD - Interface Specification [326-674]
42606	1972-11-01		964.57 KB	Connecting Arrangement HZM - Interface Specification - Preliminary
42607	1973-05-25		292.51 KB	Power Provision for Voice Connecting Arrangements for Customer-Provided PBXs
42608	1973-10-01		896.64 KB	Connecting Arrangement KTX - Interface Specification - Preliminary
42609	1973-12-01		996.96 KB	Protective Connecting Arrangement CTH - Interface Specification - Preliminary
42701	1971-06-01		1.22 MB	Voice Connecting Arrangement DCT - Interface Specification - Preliminary [326-676]
42703	1974-10-01		1.09 MB	Voice Connecting Arrangements DCK/DCL - Interface Specification [326-680]
42704	1975-03-01		1.47 MB	Protective Connecting Arrangements TSPXY/TSPZ1 - Interface Specification - Preliminary [326-681]
42704 A	1976-12-01		185.40 KB	Protective Connecting Arrangements TSPXY/TSPZ1 - Interface Specification - Preliminary [326-682]
42705	1976-10-01		932.30 KB	Recorded Magnetic Tape Formats for Station Message Detail Recording Features on Dimension PBXs - Preliminary [326-130]
42706	1977-04-01		1.06 MB	Direct Output Data Formats for Station Message Detail Recording Feature on Dimension PBXs - Preliminary [326-134]
43101	1969-05-01		2.44 MB	Voice Grade Entrance Facilities for Extending Customer-Provided Communications Channels - Preliminary [326-101]
43201	1970-06-01		3.38 MB	Private Line Interconnection - Voice Applications - Preliminary [326-120]
43301	1974-05-01		1.80 MB	Domestic Public Land Mobile Telephone Services - Customer Provided Dial Station - Interface Specification - Preliminary
43401	1971-12-01		1.92 MB	Transmission Specifications for Private Line Metallic Circuits - Preliminary [326-180]
43601	1976-08-01		489.15 KB	Lightning and 60 Hz Disturbances at the Bell System Network-Terminal Interface - Preliminary [326-127]
43720	1977-02-01		729.21 KB	Private Line Interconnection - Operational Features of Bell System Switch Terminations - Preliminary [326-132]
44101	1970-09-01		2.42 MB	PICTUREPHONE Connecting Arrangement PVF - Interface Specification - Preliminary
47101	1979-09-01		4.17 MB	Standard Plugs and Jacks - Preliminary
47102	1982-12-01		5.40 MB	Bell System Miniature Plugs and Jacks
48005	1980-01-01		4.36 MB	Functional Product Class Criteria - Telephones - Preliminary
50010	1997-12-01	2.1	133.23 KB	AT&T Basic Rate Interface - Reference Guide
50075	1999-09-01		141.20 KB	AT&T Toll Free Transfer Connect Service
54022	1997-05-01	5	212.85 KB	AT&T Intelligent Call Processing (ICP) Service - Signaling System No. 7 Network Interface Specification
54077	1998-07-01		111.21 KB	AT&T Private Line Service OC-12 - Service Description and Interface Specification
54078	1998-11-01	1.0	112.78 KB	AT&T Private Line Service OC-48 - Service Description and Interface Specification
54079	1999-09-01	1.0	114.75 KB	AT&T Private Line Service OC-192 - Service Description and Interface Specification
62411	1988-12-01		2.25 MB	ACCUNET T1.5 Service - Description and Interface Specifications
62411	1992-10-01		382.03 KB	ACCUNET T1.5 Service - Description and Interface Specification
62425	1996-12-01	97.2	1.09 MB	AT&T Call Detail Data - Interface Specification