Browse Prior Art Database

Data Transmission System

IP.com Disclosure Number: IPCOM000047073D
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Gergaud, C: AUTHOR

Abstract

This is a process for transmitting voice signals over an 8-megabit loop circuit used in telephone communications. The individual voice stations are attached to the loop along which voice transmission is to be operated under the supervision of a Control Unit also attached to the loop. Each voice station is provided with means for PCM encoding voice signals at 64K bps. During voice activity periods, the voice data are buffered by packets of 256 bytes within each voice station. The Control Unit successively transmits the attached voice station addresses over the loop. A station recognizing its address starts recording the message which follows or starts transmitting an addressee's address followed by a buffered packet and then ends with an EOM (end-of-message) character.

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Data Transmission System

This is a process for transmitting voice signals over an 8-megabit loop circuit used in telephone communications. The individual voice stations are attached to the loop along which voice transmission is to be operated under the supervision of a Control Unit also attached to the loop. Each voice station is provided with means for PCM encoding voice signals at 64K bps. During voice activity periods, the voice data are buffered by packets of 256 bytes within each voice station. The Control Unit successively transmits the attached voice station addresses over the loop. A station recognizing its address starts recording the message which follows or starts transmitting an addressee's address followed by a buffered packet and then ends with an EOM (end-of-message) character. Upon detecting the EOM character, the Control Unit transmits the next voice station address over the loop, and so on. Thus, a pair of voice stations can interchange the voice messages of a telephone conversation. It should be noted that each voice station may be assigned to one or several telephone sets.

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