| Section
| Date
| Issue
| Size
| Title
|
| 500-000-000 | 1968-04-01 | 13 | 59.48 KB | Numerical Index - Division 500 - General Considerations for Station Installations - Customer Equipment |
| 500-000-000 | 1984-06-01 | 49 | 53.92 KB | Numerical Index - Division 500 - General Considerations for Station Installations - Customer Equipment |
| 500-110-100 | 1965-10-01 | 5 | 1.11 MB | Transmission Zoning |
| 500-110-100 | 1974-04-01 | 6 | 294.16 KB | Selection of Apparatus by Class of Service and Zone |
| 500-112-100 | 1967-02-01 | 3 | 274.52 KB | Inductive Noise |
| 500-112-100 | 1973-01-01 | 8 | 1.74 MB | Reference - Inductive Noise |
| 500-112-100 | 1977-12-01 | 10 | 162.20 KB | Inductive Noise |
| 500-112-100 | 1969-02-01 | 6C | 437.38 KB | Inductive Noise |
| 500-112-100CA | 1972-10-01 | E | 624.26 KB | Inductive Noise |
| 500-112-400 | 1975-10-01 | 5 | 4.36 MB | Service - Inductive Noise |
| 500-114-100 | 1964-08-01 | 2 | 651.35 KB | Ringing Bridge Limitations |
| 500-114-100 | 1971-08-01 | 4 | 3.33 MB | Ringing Limitations |
| 500-114-100 | 1978-07-01 | 6 | 595.20 KB | Station Ringing Apparatus - Selection and Limitations |
| 500-114-100 | 1973-10-01 | 5R | 5.32 MB | Ringing Limitations |
| 500-114-100 A | 1974-03-01 | 1 | 378.30 KB | Ringing Limitations |
| 500-114-100PT A | 1963-04-01 | A | 776.48 KB | Ringing-Bridge Limitations |
| 500-114-100SN A | 1976-03-01 | D | 35.30 KB | Ringing Limitations |
| 500-115-400 | 1961-12-01 | 1 | 92.54 KB | Special Connections for Telephone Sets and Subscriber Sets Using 3-Element Electron Tubes in Ringing Circuit |
| 500-116-400 | 1962-02-01 | 1 | 38.51 KB | Ringer Connections - Tip-Party Identification for Stations Connected to Long-Line Equipment |
| 500-116-400CA | 1970-03-01 | B | 33.64 KB | Ringer Connections - Tip-Party Identification for Stations Connected to Long-Line Equipment |
| 500-120-100 | 1965-04-01 | 5 | 165.66 KB | Telephone Apparatus and Materials - Color |
| 500-120-100CA | 1972-10-01 | E | 63.45 KB | Telephone Apparatus - Colour |
| 500-122-180 | 1964-10-01 | 4 | 207.23 KB | Station Sets - Common Battery - Selection for General Use |
| 500-124-180 | 1966-06-01 | 4 | 142.51 KB | Station Sets - Selection for Specific Use or Purpose |
| 500-124-180 | 1968-09-01 | 5 | 426.33 KB | Stations Sets and Apparatus for Special Applications - Selection |
| 500-126-100 | 1959-12-01 | 2 | 921.44 KB | Apparatus for Use at Noisy Locations |
| 500-128-180 | 1964-06-01 | 2 | 254.92 KB | Telephone Apparatus for Impaired Hearing - Selection |
| 500-128-180 | 1970-04-01 | 4 | 240.43 KB | Telephone Apparatus for Impaired Hearing - Selection |
| 500-130-180 | 1964-08-01 | 2 | 43.12 KB | Subscriber Sets - Ringers Only - Selection for General Use |
| 500-130-180 | 1979-06-01 | 4 | 47.12 KB | Subscriber Sets and Externally Mounted Ringers - Selection for General Use |
| 500-150-100 | 1963-01-01 | 4 | 514.41 KB | Radio Signal Suppression in Telephone Sets |
| 500-150-100 | 1968-01-01 | 5 | 746.98 KB | Radio Signal Suppression for Telephone Sets |
| 500-150-100 | 1970-04-01 | 6 | 867.24 KB | Radio Signal Suppression for Telephone Sets |
| 500-150-100 | 1974-01-01 | 7 | 1.37 MB | Radio Signal Suppression for Telephone Sets |
| 500-150-100 | 1979-11-01 | 10 | 1.78 MB | Radio Signal Suppression for Telephone Sets - Identification, Installation, and Maintenance |
| 500-150-100 | 1984-07-01 | 11 | 3.15 MB | Radio Signal Suppression for Telephone Sets - Identification, Installation, and Maintenance |
| 500-150-100 | 1968-01-01 | 5C | 741.60 KB | Radio Signal Suppression for Telephone Sets |
| 500-150-100 A | 1967-02-01 | 1 | 112.21 KB | Radio Signal Suppression in Telephone Sets |
| 500-150-100PT X1 | 1968-08-01 | A | 353.95 KB | Radio Signal Suppression in Telephone Sets |
| 500-155-100 | 1961-12-01 | 2 | 271.21 KB | Key Telephone Sets - Dial Restriction Using 420B Diode |
| 500-810-200 | 1961-07-01 | 1 | 2.04 MB | Packaging and Handling Disconnected Station Apparatus |
| 500-810-200 | 1969-12-01 | 2 | 206.20 KB | Reference - Packaging and Handling Disconnected Station Apparatus |
| 500-810-900CA | 1972-09-01 | C | 545.54 KB | Handling, Packing and Returning - Station Supplies |
| 500-815-200 | 1966-09-01 | 1 | 135.97 KB | Packaging and Handling Disconnected 400-Type KTU's |
| 500-820-200 | 1961-07-01 | 1 | 228.72 KB | Packaging and Handling Disconnected 1-Type Telephone Answering Sets |
| 500-820-201 | 1961-07-01 | 1 | 176.55 KB | Packaging and Handling Disconnected 2-Type Telephone Answering Sets |
| 500-820-203 | 1961-07-01 | 1 | 68.99 KB | Packaging and Handling Disconnected KS-16378 Telephone Answering Sets |
| 500-820-205 | 1962-12-01 | 1 | 76.63 KB | Packaging and Handling Disconnected KS-16923, List 1 Telephone Answering Sets |
| 500-820-207 | 1964-01-01 | 1 | 83.81 KB | Packaging and Handling Disconnected KS-19245, List 1 Telephone Answering Sets |
| 500-830-200 | 1961-07-01 | 1 | 205.13 KB | Packaging and Handling Disconnected KS-16765, List 1 Announcement Sets |
| 500-840-200 | 1962-02-01 | 1 | 163.29 KB | Packaging and Handling Disconnected KS-16844 Rapidial |
| 500-850-900SN | 1972-09-01 | D | 374.44 KB | Packaging and Handling Coin Collectors, Shelves and Booths |