Telephone communication system
First Claim
1. A telephone communication system, comprising:
- a plurality of telephone stations based on an Internet protocol connected to a LAN network to form an IP network including at least one constituent unit;
for each constituent unit of said IP network, comprising;
SIP server means based on a protocol defied for controlling the start, end and change of a session of an interactive communication;
resource management server means for the control storage and delivery of station state databases of said plurality of telephone stations, and application server means;
said SIP server means, said resource management server means and said application server means being connected to said LAN internet for offering required services to said plurality of telephone stations, information transmission among said plurality of telephone stations and each of said server means being performed on a packet-wise basis.
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Accused Products
Abstract
A telephone communication system is disclosed, in which a plurality of telephone stations based on an Internet protocol are connected to a LAN network to form an IP network including at least one constituent unit. Each constituent unit of said IP network, comprising: SIP server means based on a protocol defined for controlling the start, end and change of a session of an interactive communication; resource management server means for the control storage and delivery of station state databases of said plurality of telephone stations, and application server means. The SIP server means, the resource management server means and the application server means are connected to said LAN internet for offering required services to said plurality of telephone stations, so that information transmission among said plurality of telephone stations and each of said server means are performed on a packet-wise basis.
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Citations
4 Claims
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1. A telephone communication system, comprising:
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a plurality of telephone stations based on an Internet protocol connected to a LAN network to form an IP network including at least one constituent unit;
for each constituent unit of said IP network, comprising;
SIP server means based on a protocol defied for controlling the start, end and change of a session of an interactive communication;
resource management server means for the control storage and delivery of station state databases of said plurality of telephone stations, and application server means;
said SIP server means, said resource management server means and said application server means being connected to said LAN internet for offering required services to said plurality of telephone stations, information transmission among said plurality of telephone stations and each of said server means being performed on a packet-wise basis. - View Dependent Claims (2, 3)
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4. A telephone communication system according to clam 1 or 2, in which at least one of said plurality of telephone stations is connected via a gateway to a public telecommunication network.
Specification