Gateway
First Claim
1. A gateway for connecting a public switched telephone network (PSTN) and an Internet Protocol (IP) network, comprising:
- an interface unit with the PSTN, an interface unit with the IP network, a processing unit for media conversion between the PSTN and the IP network, and a control unit for controlling the above, all separated in different hardware blocks, where the hardware blocks of the interface units or processing unit can be individually switched to blocks compatible to the type of the PSTN or IP network to be connected or the media service to be provided.
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Accused Products
Abstract
A gateway, for connecting an existing public switched telephone network (PSTN) and an Internet Protocol (IP) network, separating hardware into an interface unit with the PSTN, a processing unit having a conversion function between a PCM signal and IP packets, an IP interface unit, and a control unit for controlling the overall apparatus. By switching these hardware blocks to match with the type of the network and the type of the media, it becomes possible to achieve compatibility with various types of PSTNs and IP networks and various services such as VoIP and NAS/RAS. Also, a function block for enabling access to the duplex control units from a maintenance system or the like by a single MAC address and autonomously restoring the system from failure due to a software logic conflict and a function block for preventing file destruction are provided.
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Citations
14 Claims
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1. A gateway for connecting a public switched telephone network (PSTN) and an Internet Protocol (IP) network, comprising:
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an interface unit with the PSTN, an interface unit with the IP network, a processing unit for media conversion between the PSTN and the IP network, and a control unit for controlling the above, all separated in different hardware blocks, where the hardware blocks of the interface units or processing unit can be individually switched to blocks compatible to the type of the PSTN or IP network to be connected or the media service to be provided. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification