| Section
| Date
| Issue
| Size
| Title
|
| 512-000-000 | 1981-08-01 | 40 | 337.92 KB | Numerical Index - Division 512 - Automatic Dialers, Station Keys, Key Equipment, Interphone Systems, Modular Units, and Speakerphone Systems |
| 512-000-000 | 1984-06-01 | 42 | 301.47 KB | Numerical Index - Division 512 - Automatic Dialers, Station Keys, Key Equipment, Interphone Systems, Modular Units, and Speakerphone Systems |
| 512-000-000 | 1969-06-01 | 55 | 346.45 KB | Numerical Index - Division 512 - Automatic Dialers, Station Keys, Key Equipment, Interphone Systems, Modular Units, and Speakerphone Systems |
| 512-000-000MS A | 1972-07-01 | B | 59.44 KB | Numerical Index - Division 512 - Automatic Dialers, Station Keys, Key Equipment, Interphone Systems, Modular Units, and Speakerphone Systems |
| 512-000-000SW A | 1970-08-01 | B | 1.02 MB | Numerical Index - Division 512 - Automatic Dialers, Station Keys, Key Equipment, Interphone Systems, Modular Units, and Speakerphone Systems |
| 512-110-100 | 1959-04-01 | 1 | 3.54 MB | Telerapid Automatic Dialers - TR350 and 125 Types |
| 512-115-100 | 1964-05-01 | 2 | 5.16 MB | KS-16844 Rapidial |
| 512-115-100 | 1970-10-01 | 4 | 5.83 MB | KS-16844 Rapidial - Identification, Installation, Operation, Connections, and Maintenance |
| 512-120-101 | 1964-12-01 | 2 | 2.19 MB | F-56105 Telephone Set Using KS-16844 Rapidial |
| 512-120-102 | 1964-12-01 | 1 | 28.85 KB | F-56105 Telephone Set for Howard Johnson Motor Hotel Chain |
| 512-120-103 | 1964-12-01 | 1 | 30.33 KB | F-56105 Telephone Set for Imperial House 400 Motor Hotel Chain |
| 512-125-100 | 1965-09-01 | 2 | 4.22 MB | KS-19594 Dialer - Description and Operation |
| 512-125-200 | 1965-09-01 | 2 | 96.75 KB | KS-19594 Dialer - Installation |
| 512-125-300 | 1970-10-01 | 2 | 484.57 KB | KS-19594 Dialer - Maintenance |
| 512-125-300 | 1971-09-01 | 3 | 337.78 KB | KS-19594 Dialer - Maintenance |
| 512-125-400 | 1970-08-01 | 5 | 1.02 MB | KS-19594 Dialer Telephone Sets Equipped With Rotary Dials - Connections |
| 512-125-400 | 1975-04-01 | 6 | 577.68 KB | KS-19594 Dialer Telephone Sets Equipped With Rotary Dials - Connections |
| 512-125-410 | 1970-08-01 | 2 | 479.92 KB | KS-19594 Dialer Telephone Sets Equipped With Touch-Tone Dials - Connections |
| 512-125-410 | 1975-04-01 | 3 | 488.88 KB | KS-19594 Dialer Telephone Sets Equipped With Touch-Tone Dials - Connections |
| 512-125-410 A | 1972-11-01 | 1 | 53.23 KB | KS-19594 Dialer Telephone Sets Equipped With Touch-Tone Dials - Connections |
| 512-125-430 | 1970-12-01 | 2 | 651.06 KB | KS-19594 Dialer Switchboard and Miscellaneous Key Equipment - Connections |
| 512-127-900SN | 1976-06-01 | A | 1.32 MB | TeleDialer 32 - Installation & Maintenance |
| 512-210-101 | 1970-07-01 | 2 | 1.30 MB | Separately Mounted Keys - 6017 and 6026 Lever Types - Identification, Installation, and Connections |
| 512-210-101 | 1975-10-01 | 3 | 1.75 MB | Separately Mounted Keys - 6017, 6026, and KS-21254, Lever Types - Identification, Installation, and Connections |
| 512-210-101 | 1979-04-01 | 4 | 2.27 MB | 6017-, 6026-, KS-21254, and KS-21776 Type Separately Mounted Keys - Identification, Installation, and Connections |
| 512-210-103 | 1974-08-01 | 5 | 7.03 MB | Separately Mounted Keys - 6040, 6041, 6050, and 6051 Types - Identification, Installation, and Connections |
| 512-210-103 | 1979-07-01 | 6 | 6.25 MB | 6040-, 6041-, 6050-, and 6051-Type Separately Mounted Keys - Identification, Installation, and Connections |
| 512-220-100 | 1979-04-01 | 7 | 1.09 MB | 549- and 551-Type Pushbutton Keys - Identification, Installation, Maintenance, and Connections |
| 512-310-400 | 1959-06-01 | 1 | 86.61 KB | Key Equipment 1A - Common Battery - Connections |
| 512-310-401 | 1959-06-01 | 1 | 127.25 KB | Key Equipment 1A (Local Battery Talking - Common Battery Signaling) - Connections |
| 512-314-100 | 1970-12-01 | 4 | 1003.01 KB | Key Equipment - 4A - Identification, Installation, and Maintenance |
| 512-314-400 | 1970-12-01 | 10 | 2.40 MB | Key Equipment - 4A - Common Battery Talking - Common Battery Signaling - Connections |
| 512-314-400 | 1973-10-01 | 11 | 837.04 KB | Key Equipment - 4A - Common Battery Talking - Common Battery Signaling - Connections |
| 512-330-100 | 1960-01-01 | 1 | 1.27 MB | 100 Key Equipment - Identification |
| 512-330-200 | 1960-01-01 | 1 | 340.88 KB | 100 Key Equipment - Installation |
| 512-330-300 | 1960-01-01 | 1 | 338.33 KB | 100 Key Equipment - Maintenance |
| 512-330-400 | 1960-01-01 | 1 | 146.52 KB | 100 Key Equipment - Connections |
| 512-510-200 | 1970-12-01 | 7 | 1.19 MB | Interphone System - 1A Home - Installation and Maintenance |
| 512-510-200 | 1978-08-01 | 8 | 1.90 MB | 1A Home Interphone System |
| 512-510-400 | 1964-08-01 | 5 | 1.21 MB | Interphone Systems - 1A (Home) - Connections |
| 512-510-401 | 1970-10-01 | 3 | 1.34 MB | Interphone System - 1A Home - 511-Type Telephone Sets - Connection and Maintenance |
| 512-510-403 | 1967-11-01 | 1 | 935.98 KB | Interphone System - 1A Home - 558-Type Telephone Sets - Connections and Maintenance |
| 512-510-405 | 1970-09-01 | 2 | 774.99 KB | Interphone System - 1A Home - 711B Telephone Set - Connections and Maintenance |
| 512-510-406 | 1970-10-01 | 2 | 607.33 KB | Interphone System - 1A Home - 712B Telephone Set - Connections and Maintenance |
| 512-510-408 | 1970-09-01 | 2 | 1.60 MB | Interphone System - 1A Home - 751-Type Telephone Sets - Connections and Maintenance |
| 512-510-410 | 1970-09-01 | 3 | 1.46 MB | Interphone System - 1A Home - 752-Type Telephone Set - Connections and Maintenance |
| 512-510-412 | 1970-09-01 | 2 | 1.43 MB | Interphone System - 1A Home - 754-Type Telephone Set - Connections and Maintenance |
| 512-510-421 | 1967-09-01 | 1 | 1.02 MB | Interphone System - 1A Home - 1511-Type Telephone Sets - Connections and Maintenance |
| 512-510-423 | 1967-12-01 | 1 | 538.80 KB | Interphone System - 1A Home - 1558D Telephone Set - Connections and Maintenance |
| 512-510-426 | 1970-10-01 | 2 | 927.22 KB | Interphone System - 1A Home - 1712B Telephone Set - Connections and Maintenance |
| 512-510-428 | 1970-09-01 | 2 | 1.12 MB | Interphone System - 1A Home - 1751-Type Telephone Sets - Connections and Maintenance |
| 512-510-430 | 1967-05-01 | 1 | 10.45 MB | Interphone System - 1A Home - 1752-Type Telephone Set - Connections and Maintenance |
| 512-510-430 | 1970-10-01 | 3 | 2.31 MB | Interphone System - 1A Home - 1752-Type Telephone Set - Connections and Maintenance |
| 512-510-441 | 1970-10-01 | 3 | 721.89 KB | Interphone System - 1A Home - 2511F/H Telephone Set - Connections and Maintenance |
| 512-510-443 | 1970-10-01 | 2 | 649.68 KB | Interphone System - 1A Home - 2558D Telephone Set - Connections and Maintenance |
| 512-510-446 | 1967-09-01 | 1 | 711.72 KB | Interphone System - 1A Home - 2712B Telephone Sets - Connections and Maintenance |
| 512-510-448 | 1970-10-01 | 2 | 899.25 KB | Interphone System - 1A Home - 2751-Type Telephone Sets - Connections and Maintenance |
| 512-510-450 | 1970-11-01 | 2 | 1.61 MB | Interphone System - 1A Home - 2752-Type Telephone Sets - Connections and Maintenance |
| 512-510-452 | 1970-11-01 | 3 | 1.41 MB | Interphone System - 1A Home - 2754-Type Telephone Sets - Connections and Maintenance |
| 512-515-100 | 1964-08-01 | 3 | 4.15 MB | Interphone Systems - 2A (Farm) - Identification and Operation |
| 512-515-200 | 1967-12-01 | 5 | 1.51 MB | Interphone System - 2A Farm - Installation and Maintenance |
| 512-515-200MB X1 | 1966-01-01 | A | 900.79 KB | 2A Farm Interphone - Installation and Maintenance |
| 512-515-400 | 1964-10-01 | 6 | 5.12 MB | Interphone Systems - 2A (Farm) - Connections and Modifications |
| 512-515-404 | 1967-12-01 | 1 | 439.59 KB | Interphone Systems - 2A Farm - 558C/D and 558F Telephone Sets - Connections and Maintenance |
| 512-515-408 | 1967-12-01 | 1 | 263.81 KB | Interphone System - 2A Farm - 712B Telephone Set - Connections and Maintenance |
| 512-515-418 | 1967-12-01 | 1 | 373.45 KB | Interphone System - 2A Farm - 1712B Telephone Set - Connections and Maintenance |
| 512-515-422 | 1967-12-01 | 1 | 325.25 KB | Interphone System - 2A Farm - 2511F Telephone Set - Connections and Maintenance |
| 512-515-428 | 1968-01-01 | 1 | 280.13 KB | Interphone System - 2A Farm - 2712B Telephone Set - Connections and Maintenance |
| 512-520-100 | 1970-01-01 | 2 | 528.47 KB | Apartment Door Answering Telephone Sets - 2755A - Identification, Installation, and Operation |
| 512-531-200 A | 1968-01-01 | 1 | 477.19 KB | KS-19120 Intercommunication System - School To Home - Installation, Connections, and Maintenance |
| 512-534-100 | 1967-08-01 | 1 | 3.10 MB | No. 2A Communication System (Business Interphone) - Identification, Installation, and Operation |
| 512-534-100 | 1975-11-01 | 5 | 2.72 MB | 2A Communication System (Business Interphone) - Identification, Installation, and Operation |
| 512-534-400 | 1967-08-01 | 1 | 1.11 MB | 2A Communication System (Business Interphone) - Connections and Maintenance |
| 512-534-400 | 1975-10-01 | 5 | 1.14 MB | 2A Communication System (Business Interphone) |
| 512-535-100 | 1969-03-01 | 4 | 794.27 KB | 3A Communication System (Hospital Interphone) - Identification |
| 512-535-200 | 1967-02-01 | 2 | 1.32 MB | 3A Communication System (Hospital Interphone) - Equipment Cabinet - Installation, Connections, and Maintenance |
| 512-535-201 | 1967-12-01 | 3 | 2.52 MB | 3A Communication System (Hospital Interphone) - Control Console - Installation, Connections, and Maintenance |
| 512-535-202 | 1967-12-01 | 3 | 937.73 KB | 3A Communication System (Hospital Interphone) - Patient Telephone Set - Installation, Connections, and Maintenance |
| 512-535-202 | 1969-09-01 | 4 | 442.85 KB | 3A Communication System (Hospital Interphone) - Patient Telephone Set - Installation, Connections, and Maintenance |
| 512-535-300 | 1967-02-01 | 2 | 368.16 KB | 3A Communication System (Hospital Interphone) - Method of Operation |
| 512-620-100 | 1971-01-01 | 5 | 161.83 KB | Speakerphone System - 3-Type |
| 512-620-100 | 1978-10-01 | 7 | 570.53 KB | Speakerphone System - 3-Type |
| 512-620-100 Hdbk | 1978-10-01 | 7 | 924.23 KB | Speakerphone System - 3-Type |
| 512-620-101 | 1964-07-01 | 2 | 639.92 KB | Speakerphone System - 3-Type - Operation |
| 512-620-200 | 1964-05-01 | 3 | 860.49 KB | Speakerphone Systems - 3 Type - Installation and Maintenance |
| 512-620-400 | 1964-04-01 | 5 | 5.86 MB | Speakerphone Systems - 3 Type - Control Units and Transmitter Units - Connections |
| 512-620-401 | 1964-07-01 | 3 | 3.42 MB | Speakerphone Systems - 3 Type - 0 to 1 Button Telephone Sets - Connections |
| 512-620-404 | 1964-04-01 | 2 | 14.19 MB | Speakerphone Systems - 3 Type - 660 and 1660 Series Telephone Sets - Connections |
| 512-620-406 | 1964-06-01 | 1 | 209.47 KB | Speakerphone Systems - 3 Type - Speakerphone Conference Systems |
| 512-620-407 | 1967-10-01 | 1 | 364.50 KB | Speakerphone System - 3-Type - 211N/P Hand Telephone Set - Connections and Maintenance |
| 512-620-410 | 1967-12-01 | 1 | 166.92 KB | Speakerphone System - 3-Type - 500R/S Telephone Set - Connections and Maintenance |
| 512-620-410 | 1970-11-01 | 2 | 1.58 MB | Speakerphone System - 3-Type - 500R/S Telephone Set - Connections and Maintenance |
| 512-620-410 | 1972-09-01 | 3 | 145.28 KB | Speakerphone System - 3-Type - 500R/S, 1500S, and 2500S Telephone Set - Connections |
| 512-620-410 Hdbk | 1972-09-01 | 3 | 129.49 KB | Speakerphone System - 3-Type - 500R/S, 1500S, and 2500S Telephone Set - Connections |
| 512-620-415 | 1967-11-01 | 1 | 312.22 KB | Speakerphone System - 3-Type - 511-Type Telephone Sets - Connections and Maintenance |
| 512-620-415 | 1972-10-01 | 4 | 249.16 KB | Speakerphone System - 3-Type - 511-, 1511-, and 2511-Type Telephone Sets - Connection and Maintenance |
| 512-620-418 | 1967-12-01 | 1 | 394.87 KB | Speakerphone System - 3-Type - 558-Type Telephone Sets - Connection and Maintenance |
| 512-620-418 | 1970-11-01 | 3 | 572.96 KB | Speakerphone System - 3-Type - 558-Type Telephone Sets - Connections and Maintenance |
| 512-620-418 | 1972-09-01 | 4 | 248.63 KB | Speakerphone System - 3-Type - 558-, 1558-, and 2558-Type Telephone Sets - Connection and Maintenance |
| 512-620-420 | 1970-11-01 | 2 | 875.77 KB | Speakerphone System - 3-Type - 565-Type Telephone Sets - Connections and Maintenance |
| 512-620-420 | 1974-04-01 | 4 | 382.90 KB | Speakerphone System - 3-Type - 565-, 1565-, and 2565-Type Telephone Sets - Connections |
| 512-620-420 Hdbk | 1974-04-01 | 4 | 425.77 KB | Speakerphone System - 3-Type - 565-, 1565-, and 2565-Type Telephone Sets - Connections |
| 512-620-430 | 1974-04-01 | 2 | 242.36 KB | Speakerphone Systems - 3-Type - 568HAA and 2568HAA Telphone [sic] Sets - Connections and Maintenance |
| 512-620-432 | 1968-04-01 | 1 | 201.83 KB | Speakerphone System - 3-Type - 1632-Type Telephone Sets - Connections and Maintenance |
| 512-620-440 | 1970-09-01 | 2 | 971.94 KB | Speakerphone System - 3-Type - 630-Type Telephone Sets - Connections and Maintenance |
| 512-620-440 | 1979-07-01 | 5 | 934.51 KB | Speakerphone System - 3-Type - 630-, 631-, 1630-, 1631-, 2630-, and 2631-Type Telephone Sets - Connections |
| 512-620-441 | 1970-09-01 | 2 | 975.97 KB | Speakerphone System - 3-Type - 631-Type Telephone Sets - Connections and Maintenance |
| 512-620-442 | 1970-12-01 | 2 | 315.63 KB | Speakerphone System - 3-Type - 631-Type Telephone Sets - Connections and Maintenance |
| 512-620-442 | 1974-04-01 | 3 | 253.47 KB | Speakerphone System - 3-Type - 632-, 1632-, and 2632-Type Telephone Sets - Connections and Maintenance |
| 512-620-460 | 1970-11-01 | 3 | 183.91 KB | Speakerphone System - 3-Type - 660A1 Telephone Set - Connections and Maintenance |
| 512-620-460 Hdbk | 1970-11-01 | 3 | 225.38 KB | Speakerphone System - 3-Type - 660A1 Telephone Set - Connections and Maintenance |
| 512-620-462 | 1970-08-01 | 3 | 121.17 KB | Speakerphone System - 3-Type - 662-Type Telephone Set - Connections and Maintenance |
| 512-620-472 | 1970-10-01 | 2 | 514.90 KB | Speakerphone System - 3-Type - 702B Telephone Set - Connections and Maintenance |
| 512-620-474 | 1967-08-01 | 1 | 113.35 KB | Speakerphone System - 3-Type - 711B Telephone Set - Connections and Maintenance |
| 512-620-480 | 1970-11-01 | 2 | 652.28 KB | Speakerphone System - 3-Type - 752-Type Telephone Sets - Connections and Maintenance |
| 512-620-480 | 1974-04-01 | 3 | 476.88 KB | Speakerphone System - 3-Type - 752-, 1752-, and 2752-Type Telephone Sets - Connections and Maintenance |
| 512-620-487 | 1975-12-01 | 2 | 216.29 KB | Speakerphone System - 3-Type - 832-, 2832-, and 2833-Type Telephone Sets - Connections |
| 512-620-495 | 1970-10-01 | 2 | 243.44 KB | Speakerphone System - 3-Type - 851A1M Telephone Set - Connections and Maintenance |
| 512-620-495 | 1974-04-01 | 3 | 224.40 KB | Speakerphone System - 3-Type - 851-, and 2851-Type Telephone Sets - Connection and Maintenance |
| 512-621-402 | 1967-10-01 | 1 | 194.38 KB | Speakerphone System - 3-Type - 1500S Telephone Set - Connections and Maintenance |
| 512-621-410 | 1967-11-01 | 1 | 317.20 KB | Speakerphone System - 3-Type - 1511-Type Telephone Sets - Connections and Maintenance |
| 512-621-415 | 1968-01-01 | 1 | 269.55 KB | Speakerphone System - 3-Type - 1565-Type Telephone Sets - Connections |
| 512-621-434 | 1967-12-01 | 1 | 177.69 KB | Speakerphone System - 3-Type - 1634-Type Telephone Sets - Connections and Maintenance |
| 512-621-435 | 1967-12-01 | 1 | 173.14 KB | Speakerphone System - 3-Type - 1635-Type Telephone Sets - Connections and Maintenance |
| 512-621-462 | 1967-06-01 | 1 | 864.22 KB | Speakerphone System - 3-Type - 1662-Type Telephone Sets - Connections |
| 512-622-405 | 1970-11-01 | 2 | 384.12 KB | Speakerphone System - 3 Type - 2500S Telephone Set - Connections and Maintenance |
| 512-622-410 | 1967-10-01 | 1 | 108.72 KB | Speakerphone System - 3 Type - 2511F Telephone Sets - Connections and Maintenance |
| 512-622-410 | 1970-11-01 | 3 | 467.60 KB | Speakerphone System - 3 Type - 2511-Type Telephone Sets - Connections and Maintenance |
| 512-622-413 | 1967-09-01 | 1 | 232.01 KB | Speakerphone System - 3-Type - 2558D Telephone Sets - Connections and Maintenance |
| 512-622-413 | 1970-11-01 | 2 | 622.71 KB | Speakerphone System - 3-Type - 2558D Telephone Sets - Connections and Maintenance |
| 512-622-415 | 1968-01-01 | 1 | 283.16 KB | Speakerphone System - 3-Type - 2565-Type Telephone Sets - Connections |
| 512-622-415 | 1970-11-01 | 2 | 737.43 KB | Speakerphone System - 3-Type - 2565-Type Telephone Sets - Connections |
| 512-622-430 | 1970-10-01 | 2 | 588.07 KB | Speakerphone System - 3-Type - 2630-Type Telephone Set - Connections and Maintenance |
| 512-622-431 | 1970-12-01 | 2 | 597.85 KB | Speakerphone System - 3-Type - 2631-Type Telephone Sets - Connections and Maintenance |
| 512-622-432 | 1970-12-01 | 2 | 347.76 KB | Speakerphone System - 3-Type - 2632-Type Telephone Sets - Connections and Maintenance |
| 512-622-460 | 1970-11-01 | 2 | 587.87 KB | Speakerphone System - 3-Type - 2660-Type Telephone Sets - Connections and Maintenance |
| 512-622-462 | 1970-11-01 | 3 | 286.68 KB | Speakerphone System - 3-Type - 2662-Type Telephone Set - Connections and Maintenance |
| 512-622-472 | 1970-11-01 | 3 | 495.33 KB | Speakerphone System - 3-Type - 2702B Telephone Sets - Connections and Maintenance |
| 512-622-480 | 1970-11-01 | 3 | 571.78 KB | Speakerphone System - 3-Type - 2752-Type Telephone Sets - Connections and Maintenance |
| 512-622-495 | 1970-11-01 | 2 | 396.03 KB | Speakerphone System - 3-Type - 2851A1M Telephone Sets - Connections and Maintenance |
| 512-630-111 | 1979-05-01 | 2 | 1.52 MB | 50A1 Conference Set - Identification, Installation, Connections, Operation, and Maintenance |
| 512-630-111 | 1980-01-01 | 3 | 2.53 MB | 50A1 Conference Set - Identification, Installation, Connections, Operation, and Maintenance |
| 512-630-201 | 1965-06-01 | 2 | 3.69 MB | KS-19134, List 1 Conference Set - Installation and Maintenance |
| 512-700-100 | 1973-05-01 | 1 | 1.41 MB | 4A Speakerphone System |
| 512-700-100 | 1974-09-01 | 2 | 687.53 KB | 4A Speakerphone System |
| 512-700-100 | 1978-05-01 | 4 | 657.06 KB | 4A Speakerphone System |
| 512-700-100 | 1979-04-01 | 5 | 3.09 MB | 4A Speakerphone Components - Identification, Installation, Operation, and Maintenance |
| 512-700-100 A | 1980-08-01 | 1 | 32.03 KB | 4A Speakerphone Components - Identification, Installation, Operation, and Maintenance |
| 512-710-405 | 1973-04-01 | 1 | 732.94 KB | Speakerphone System - 4A - 500S and 2500S Telephone Sets - Connections |
| 512-710-405 | 1977-05-01 | 3 | 321.68 KB | Speakerphone System - 4A - 500S, 500SM, 2500S, and 2500SM Telephone Sets - Connections |
| 512-710-405 Hdbk | 1977-05-01 | 3 | 378.56 KB | Speakerphone System - 4A - 500S, 500SM, 2500S, and 2500SM Telephone Sets - Connections |
| 512-710-410 | 1979-09-01 | 5 | 414.64 KB | 511- and 2511-Type Telephone Sets - Connections - Speakerphone System - 4A |
| 512-710-410 | 1981-07-01 | 6 | 502.21 KB | 511- and 2511-Type Telephone Sets - Connections - Speakerphone System - 4A |
| 512-710-412 | 1979-02-01 | 4 | 479.47 KB | 558D, 558F, 558FM, 2558D, and 2558DM Telephone Sets - Connections - Speakerphone System - 4A |
| 512-710-412 | 1981-06-01 | 5 | 536.44 KB | 558D, 558F, 558FM, 2558D, and 2558DM Telephone Sets - Connections - Speakerphone System - 4A |
| 512-720-405 | 1979-09-01 | 4 | 529.96 KB | 565- and 2565-Type Plug-Ended Telephone Sets - Connections - Speakerphone System - 4A |
| 512-720-405 | 1980-10-01 | 5 | 506.33 KB | 565- and 2565-Type Plug-Ended Telephone Sets - Connections |
| 512-720-406 | 1979-04-01 | 3 | 255.47 KB | Speakerphone System - 4A - 566MD and 566MDM Telephone Set - Connections |
| 512-730-400 | 1979-09-01 | 4 | 681.93 KB | Speakerphone System - 4A - 630-, 631-, 632-, 634-, 635-, 2630-, 2631-, 2632-, 2634-, 2635-Type Telephone Sets - Connections |
| 512-730-450 | 1979-09-01 | 5 | 625.29 KB | Speakerphone System - 4A - 660A1, 2660A1, and 2660A1M Telephone Sets - Connections |
| 512-730-455 | 1978-01-01 | 3 | 514.89 KB | Speakerphone System - 4A - 662- and 2662-Type Telephone Sets |
| 512-730-460 | 1980-09-01 | 4 | 310.10 KB | 682-, 683-, 2682-, and 2683-Type Telephone Sets - Connections - Speakerphone System - 4A |
| 512-740-405 | 1979-04-01 | 3 | 511.93 KB | Speakerphone System - 4A - 702B, 702BM, 2702B, and 2702BM Telephone Sets - Connections |
| 512-740-410 | 1981-08-01 | 6 | 605.15 KB | 711B, 712B, 712BM, 2712B, and 2712BM Telephone Sets - Connections - Speakerphone System - 4A |
| 512-740-470 | 1979-09-01 | 6 | 215.41 KB | Speakerphone System - 4A - 830-, 831-, 2830-, and 2831-Type Telephone Sets - Connections |
| 512-740-471 | 1979-09-01 | 4 | 246.37 KB | Speakerphone System - 4A - 832-, 833-, 2832-, and 2833-Type Telephone Sets - Connections |
| 512-740-480 | 1979-09-01 | 4 | 352.46 KB | Speakerphone System - 4A - 851- and 2851-Type Telephone Sets - Connections |
| 512-740-481 | 1979-09-01 | 2 | 258.01 KB | Speakerphone System - 4A - 852- and 2852-Type Telephone Sets - Connections |
| 512-750-100 | 1981-08-01 | 1 | 5.87 MB | "TELEHELPER" Speakerphone System - Identification, Installation, Connection, Operation, and Maintenance |