| 摘要 |
<p>A system and method for retrofitting telecommunications infrastructures of existing buildings with new telecommunications services. The present invention allows new telecommunications services to be provided over existing telephone lines with reduced cost. The telephony line interface module (or line interface transducer) used in retrofitting rooms of a building may be implemented as a telephone jack, in a telephony device, or as a separate device or 'brick' which connects to the existing telephone wiring. In order to retrofit a room of a building with additional telecommunication capabilities, the line interface module is located in the room and connected to the existing telephone wiring. In one embodiment, a modulation unit may be connected to the existing telephone wiring, e.g., to the 'other end' of the existing telephone wiring proximate to the PBX. The modulation unit may also be connected to a network, such as the Internet. The modulation unit is configured to communicate with line interface modules in each of a plurality of rooms and is configured to communicate with the network, and may optionally also communicate with the PBX. The system and method may operate to retrofit one or more rooms with improved telecommunication capabilities, such as a second phone line, a modem line, and/or a network line, among other capabilities. The present invention also provides improved telephony line interface module and telephony device embodiments that effectively implement line card functionality in the telephony line interface module and/or telephony device, respectively.</p> |
