Digital dual channel communication terminal

• US 4,512,017 A
• Filed: 02/04/1983
• Issued: 04/16/1985
• Est. Priority Date: 02/04/1983
• Status: Expired due to Term

• Current Assignee: Avaya Technology Corporation Miami Lakes FLA US
• Original Assignee: At&T Information Systems (AT&T, Inc.)
• Inventors: Schramm, George W., Sharp, John B., Nici, Richard J.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Scutch, III, Frank M.
• Application Number:
  US06/464,058
• Time in Patent Office: 802 Days
• Field of Search: 370/110.1, 370/60, 370/66, 370/92
• US Class Current: 370/524
• CPC Class Codes: H04M 1/253 Telephone sets using digital voice transmission
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals

Abstract

There is disclosed a digital telephone having dual voice and data handling capability over a single communication line. Time separated information channels are used to transport the voice and data information between the terminal and the main processor. A separate signaling channel is shared between the two information channels and information on the signaling channel is accumulated for distribution to either the voice device or the data device in accordance with address information contained within the accumulated signaling channel message.

Claims

1. A telephone station having at least two communication modules, said telephone station comprising

means for simultaneously exchanging information over at least two time separated information channels of a communication line,

means for directing data in one of said information channels to one of said communication modules and for directing data in another one of said information channels to another one of said communication modules, and

means for exchanging signaling information over said communication line in a signaling channel that is time separated from said information channels, said signaling information being accumulated over a plurality of time frames and being directed to either one of said communication modules.

2. The invention set forth in claim 1 wherein said means for directing is responsive to the time relationship of said information on said line.

3. The invention set forth in claim 2 further comprising means for accumulating data from a number of periodic frames of said signaling channel, said accumulated data being distributed in accordance with address information received over said signaling channel.

4. The invention set forth in claim 1 wherein one of said communication modules is adapted for communication with an auxiliary module, said one of said communication modules including means for redistributing at least a portion of said data distributed thereto from said signaling channel to said auxiliary module in accordance with a subaddress contained within said signaling channel distributed data.

5. A digital telephone station adapted for connection to a main processor via a single communication line over which at least two time separated multi-bit information channels are established and a single one bit signaling channel is established for communicating signaling messages to said digital telephone station, said digital telephone station comprising

means for receiving information from said information channels and for separating said information into separate information streams, each stream associated with one of said information channels depending upon the channel in which said information is received,

means for directing a first said information stream to a first communication module of said digital telephone station,

means for directing a second said information stream to a second module of said digital telephone station,

means for receiving data from said one bit signaling channel and for accumulating said data over a successive number of frames, and

means for distributing said accumulated data over a signaling bus to either said first or to said second communication module.

6. The invention set forth in claim 5 wherein said accumulated data contains address information and wherein said distributing means includes means for directing said accumulated data over said signaling bus in accordance with said address information.

7. The invention set forth in claim 5 further comprising means for further distributing said accumulated data from either of said first or second modules to a third module.

8. The invention set forth in claim 7 wherein said accumulated data contains address information and wherein said further distributing means includes means for directing said accumulated data to said third module in accordance with said address information.

9. A communication system having a main processor and a plurality of telephone stations each said telephone station connectable to said main processor via a single communication line over which multiple time separated multi-bit information channels are established and a separate signaling channel is established for communicating signaling messages to said telephone station, said telephone station comprising

means for receiving information from said information channels and for separating said information into separate information streams, each stream associated with one of said information channels,

means for directing a first said information stream to a first communication module,

means for directing a second said information stream to a second module,

means for receiving data from said signaling channel and for accumulating said data over a number of frames, and

means for distributing said accumulated data to said first and second module over a signaling bus common to said first and second modules.

10. The invention set forth in claim 9 wherein information is separated into said streams in accordance with the time relationship of said information on said line and wherein said accumulated signaling channel information is distributed in accordance with address information obtained within said accumulated information.