Title:
TELECONFERENCE AGENCY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2005/125167
Kind Code:
A1
Abstract:
The present invention relates to a teleconference agency system, it includes several external communication terminals, a PSTN connected with the said external communication terminals and a teleconference server in which comprises a master process unit. The said teleconference server further includes a PBX having multi-party communication function. The said PBX is connected between the PSTN and the PBX; it is connected to the master process sunit by CTI interface and to the PBX by trunk line. The said master processor unit dials automatically according to the teleconference request signal transmitted from the external communication terminal, and controls the PBX to set up multi-party communication link. With the control of the master process unit, the said PBX transmits the voice signal from anyone external communication terminal to the PSTN via the internal multi-party communication link and the trunk line, and then transmits to other external communication terminals through the PSTN.
Inventors:
LI ZHONGQING (CN)
Application Number:
PCT/CN2004/001337
Publication Date:
December 29, 2005
Filing Date:
November 23, 2004
Export Citation:
Assignee:
LENOVO BEIJING LTD (CN)
LI ZHONGQING (CN)
LI ZHONGQING (CN)
International Classes:
H04M3/56; (IPC1-7): H04M3/56
Foreign References:
| US5815562A | 1998-09-29 | |||
| EP1317123A1 | 2003-06-04 | |||
| EP0837588A2 | 1998-04-22 | |||
| US5654961A | 1997-08-05 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (Bldg. B., Tinghua Tongfang Hi-Tech Plaza,
No.1, Wangzhuang Rd, Haidian District Beijing 3, CN)
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