Communication system, communication apparatus and terminal accommodation apparatus
US8102873B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Apr 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/121
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication system, a communication apparatus and a terminal accommodation apparatus which use a metallic subscriber line and are a high-speed and inexpensive are provided. The communication system includes a plurality of terminal accommodation apparatuses 200 for accommodating terminals 3c, 3d, a communication apparatus 1 connected to an IP network 4, and digital subscriber lines L3 for connecting the plurality of terminal accommodation apparatuses 200 and the communication apparatus 1. The terminal accommodation apparatus 200 includes a PCM (pulse code modulation) modulator and a subscriber line interface. The PCM modulator converts a voice signal received from the terminal 3c to PCM data. The subscriber line interface transmits data including the PCM data to the communication apparatus 1 via the metallic subscriber line L3. The communication apparatus 1 includes an IP converter 130 for converting the PCM data to an IP (Internet protocol) packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.