Title:
【発明の名称】PCMを使用したデジタルモデム及びアナログモデムの起動手順のための方法及び装置
Document Type and Number:
Japanese Patent JP2003524945
Kind Code:
A
Abstract:
In order to achieve reliable and efficient communication over public switched telephone networks (PSTN), voice-band modems utilize sophisticated start-up procedures. This invention involves a start-up procedure that allows an analog modem and a digital modem to establish a dial-up connection that utilizes PCM modulation in both upstream and downstream directions for data transmission.
Inventors:
Meulabanzad, Sepur
Kim, Daeyoung
Pillowge, John
Kim, Daeyoung
Pillowge, John
Application Number:
JP2001522683A
Publication Date:
August 19, 2003
Filing Date:
August 25, 2000
Export Citation:
Assignee:
MOTOROLA INCORPORATED
International Classes:
H04L29/08; H04L5/14; H04L25/49; H04M11/00; (IPC1-7): H04M11/00; H04L29/08
Domestic Patent References:
| JPH0583163A | 1993-04-02 | |||
| JPH09116504A | 1997-05-02 | |||
| JPH09321674A | 1997-12-12 | |||
| JPH04243349A | 1992-08-31 |
Foreign References:
| WO1999034565A1 | 1999-07-08 | |||
| WO1999034566A1 | 1999-07-08 |
Attorney, Agent or Firm:
Hironobu Onda (1 person outside)