Title:
A ROAMING IMPLEMENTED METHOD FOR DIGITAL TRUNK COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2007/019730
Kind Code:
A1
Abstract:
The present invention is a roaming implemented method for digital trunk communication
system. The digital trunk communication system comprises: base station subsystem,
exchange subsystem ,dispatch subsystem, packet subsystem; the said method
comprises: the roaming is implemented with the control of dispatch subsystem,
the local digital trunk communication system connects to the IP network by the
dispatch server and the dispatch home register , and interconnects with the trunk
system of the other region ; the said roaming method of the trunk system comprises
: roaming user registering , roaming user initiating a single call, roaming user
initiating a group call, the management of speech right, call release and voice
transfer . The method of the invention utilizes the specification of the existed
mobile communication system, and with the control mechanism of the dispatch
subsystem, implements the interconnection among these trunk communication
systems, and implements the roaming of terminal trunk service.
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Inventors:
GENG ZHAO SEN (CN)
WU QIANG (CN)
XIE GUO SHENG (CN)
WU QIANG (CN)
XIE GUO SHENG (CN)
Application Number:
PCT/CN2005/001293
Publication Date:
February 22, 2007
Filing Date:
August 18, 2005
Export Citation:
Assignee:
ZTE CORP (CN)
GENG ZHAO SEN (CN)
WU QIANG (CN)
XIE GUO SHENG (CN)
GENG ZHAO SEN (CN)
WU QIANG (CN)
XIE GUO SHENG (CN)
International Classes:
H04W76/02; H04W8/12; H04W76/06
Domestic Patent References:
| WO1991005429A1 | 1991-04-18 |
Foreign References:
| CN1625293A | 2005-06-08 | |||
| CN1133541A | 1996-10-16 | |||
| CN1050964A | 1991-04-24 | |||
| CN1138279A | 1996-12-18 | |||
| CA1282462A1 |
Other References:
See also references of EP 1926333A4
Attorney, Agent or Firm:
CHINA SINDA INTELLECTUAL PROPERTY LTD. (Focus Place 19 Financial Street, 2 Beijing, CN)
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