Method of controlling change-over of connection route between media gateway apparatuses, and call agent apparatus
First Claim
1. A method of controlling change-over of a connection route between media gateway apparatuses, based on a sound/data integrated network that connects subscriber lines accommodated in a telephone network to an Internet protocol communication network via media gateway apparatuses, and that connects a media gateway apparatus at a call originating subscriber'"'"'s line side to a media gateway apparatus at a call terminating subscriber'"'"'s line side via the Internet protocol communication network, the change-over control method comprising:
- a step at which the media gateway apparatuses collect/edit real-time packet quality information of Internet protocol packets for each call, and transmit the packet quality information for each call to a call agent apparatus;
a step at which the call agent apparatus receives packet quality information for each call transmitted from the media gateway apparatuses, updates packet quality information for each connection route based on the received packet quality information, and decides on a quality level of the call;
a step at which the call agent apparatus selects a connection route of good quality based on the packet quality information for each route when a decision has been made that the quality level has been deteriorated, and transmits an instruction for changing over the call connection route of the deteriorated quality level to the connection route of good quality, to the media gateway apparatuses; and
a step at which the media gateway apparatuses change over the connection route according to the route change-over instruction received from the call agent apparatus.
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Accused Products
Abstract
The invention relates to a method of controlling change-over of a connection route between media gateway apparatuses, and a call agent apparatus. During communications, a connection route of deteriorated quality is changed over to a connection route of high quality selected from a plurality of IP networks. Thus, the transmission quality is maintained, and high-quality transmission services are provided at low cost.
In a voice/data integrated network having subscribers lines accommodated in STM channel switches LS1 and LS2 connected to an IP network via media gateway apparatuses MG1 and MG2 respectively, the media gateway apparatuses MG1 and MG2 collect/edit real-time packet quality information of IP packets for each call, and post the quality information to a call agent CA. The call agent CA updates packet quality information for each connection route based on the packet quality information, and transmits an instruction, for changing over a connection route of a call at a deteriorated quality level to a connection route of good quality, to the media gateway apparatuses MG1 and MG2.
40 Citations
9 Claims
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1. A method of controlling change-over of a connection route between media gateway apparatuses, based on a sound/data integrated network that connects subscriber lines accommodated in a telephone network to an Internet protocol communication network via media gateway apparatuses, and that connects a media gateway apparatus at a call originating subscriber'"'"'s line side to a media gateway apparatus at a call terminating subscriber'"'"'s line side via the Internet protocol communication network, the change-over control method comprising:
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a step at which the media gateway apparatuses collect/edit real-time packet quality information of Internet protocol packets for each call, and transmit the packet quality information for each call to a call agent apparatus;
a step at which the call agent apparatus receives packet quality information for each call transmitted from the media gateway apparatuses, updates packet quality information for each connection route based on the received packet quality information, and decides on a quality level of the call;
a step at which the call agent apparatus selects a connection route of good quality based on the packet quality information for each route when a decision has been made that the quality level has been deteriorated, and transmits an instruction for changing over the call connection route of the deteriorated quality level to the connection route of good quality, to the media gateway apparatuses; and
a step at which the media gateway apparatuses change over the connection route according to the route change-over instruction received from the call agent apparatus. - View Dependent Claims (2, 3, 4)
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5. A media gateway apparatus that connects a subscriber'"'"'s line accommodated in a telephone network to an Internet protocol communication network, and connects an originating/terminating call of the subscriber'"'"'s line through a connection route via the Internet protocol communication network according to an instruction from a call agent, the media gateway apparatus comprising:
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means for collecting/editing real-time packet quality information of Internet protocol packets for each call, and transmitting the packet quality information for each call to a call agent apparatus; and
means for changing over a connection route of an Internet protocol communication network to another connection route of good quality in other Internet protocol communication network.
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6. A call agent apparatus that transmits an instruction for connecting originating/terminating calls of subscriber'"'"'s lines through a connection route via an Internet protocol communication network, to media gateway apparatuses that connect the subscriber'"'"'s lines accommodated in a telephone network to the Internet protocol communication network, the call agent apparatus comprising:
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call quality managing means for receiving real-time packet quality information for each call transmitted from the media gateway apparatuses that have collected/edited the packet quality information, updating packet quality information for each connection route based on the received packet quality information, and deciding on a quality level of the call;
change-over route determining means for selecting a connection route of good quality based on the packet quality information for each route when a decision has been made that the quality level has been deteriorated; and
call control means for transmitting an instruction for changing over the call connection route of the deteriorated quality level to the connection route of good quality, to the media gateway apparatuses. - View Dependent Claims (7, 8, 9)
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Specification