Mechanism for Integrating VOICE and DATA on a Transmission Channel
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
A way to integrate voice and data information on the same transmission channel consists in reducing the rate needed for voice transport by means of voice-compression techniques. These techniques are sophisticated, and voice-compression equipment is needed at both ends of the channel. This article relates to a simple mechanism allowing voice and data to be transmitted on the same channel without using voice- compression techniques. Even if no compression technique is used, voice signal can be carried together with data information, due to the fact that voice signal includes no-activity periods. Such periods correspond to a voice level lower than a predetermined threshold. Such no-activity periods are long compared to a slot duration which is generally of 125 microseconds.