Communication interface to data networks
First Claim
1. Apparatus for transmitting data and voice signals between a digital network and a public switched telephone network (PSTN) comprising:
- a telephone connected to the PSTN by a PBX; and
a network interface microcontroller in the telephone for connecting the telephone to the digital network, for converting signals from the digital network into a form suitable for transmission through the PBX to the PSTN, and for converting signals received from the PSTN through the PBX into a form suitable for transmission to the digital network.
3 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to a communications method and device which will allow a telephone connected to the Public Switch Telephone Network (PSTN) through a switching device such as a Private Branch Exchange (PBX) to transfer data between the PSTN and a closed loop digital data network. A network interface microcontroller is installed in an analog or digital telephone connected to a closed loop digital data network. The microcontroller converts the digital network data into a form suitable for transmission through the PBX to the PSTN and converts data received from the PSTN through though PBX into the digital network protocol.
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Citations
3 Claims
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1. Apparatus for transmitting data and voice signals between a digital network and a public switched telephone network (PSTN) comprising:
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a telephone connected to the PSTN by a PBX; and a network interface microcontroller in the telephone for connecting the telephone to the digital network, for converting signals from the digital network into a form suitable for transmission through the PBX to the PSTN, and for converting signals received from the PSTN through the PBX into a form suitable for transmission to the digital network. - View Dependent Claims (2, 3)
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Specification
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- Resources
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Current AssigneeNortel Networks Limited (Nortel Networks Corporation)
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Original AssigneeNortel Networks Corporation
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InventorsStovall, Gregory Todd
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Primary Examiner(s)WOO, STELLA L
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Application NumberUS09/080,134Time in Patent Office907 DaysField of Search379/93.05, 379/93.06, 379/93.07, 379/93.15, 379/93.14, 379/90.01, 379/93.01, 379/93.08, 379/156, 379/399US Class Current379/93.05CPC Class CodesH04L 12/6418 Hybrid transportH04L 2012/6429 Terminal adaptersH04L 2012/6475 N-ISDN, Public Switched Tel...
