| 455 / | HD | TELECOMMUNICATIONS |
|
| 73 | DF | TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER) {9} |
| 550 |  | .~ Radiotelephone equipment detail {17} |
| 551 | DF | .~.~> Number assignment module (NAM) detail |
| 552 | DF | .~.~> Operable on more than one system {1} |
| 554 | DF | .~.~> Remote private branch exchange (PBX) with wireless link to landline |
| 555 | DF | .~.~> Wireless private branch exchange (PBX) (i.e., wireless link to extension unit) |
| 556 | DF | .~.~> Integrated with other device (e.g., electronic notebook, personal digital assistant, etc.) |
| 557 | DF | .~.~> Interface attached device (e.g., interface with modem, facsimile, computer, etc.) {2} |
| 560 | DF | .~.~> Switching unit detail (e.g., mobile telephone switching office (MTSO), base station controller (BSC), etc.) |
| 561 | DF | .~.~> Base station detail {1} |
| 563 | DF | .~.~> Having voice recognition or synthesization |
| 564 | DF | .~.~> Auto-dialing or repertory dialing (e.g., using bar code, etc.) |
| 565 | DF | .~.~> Restrictive dialing circuitry |
| 566 | DF | .~.~> Having display |
| 567 | DF | .~.~> Call alerting |
| 568 | DF | .~.~> Headgear |
| 569 | DF | .~.~> Hands-free or loudspeaking arrangement {1} |
| 571 | DF | .~.~> Power booster |
| 572 | DF | .~.~> Power supply {2} |