- Telephones and telephone apparatus (11)
- Communication headgear, telephone (1)
- Headsets, telephone (1)
- Modems (3)
- Switching equipment, telephone (1)
- Telephone answering machines (1)
- Telephone central office equipment, dial or manual (1)
- Telephone dialing devices, automatic (1)
- Telephone sets, all types except cellular radio (5)
- Telephone station equipment and parts, wire (1)
- Toll switching equipment, telephone (1)
- Telegraph office switching equipment (1)
- Telegraph or telephone carrier and repeater equipment (1)
- Message concentrators (3)
- Fiber optics communications equipment (5)
