JPS596694A - Packet exchange system of voice - Google Patents

Abstract

PURPOSE:To enable effective utilization of a packet exchange and junction circuits by setting a judging value for condition of packeting of voice data corresponding to background noise level of environment and performing packeting of voice data basing on it. CONSTITUTION:A packeting condition module 5 is provided in a communication control device 2, and the module 5 has a packeting condition judging value VEi. The device 2 reads out amplitude value of voice data inputted from a digital exchange 3. When V>=VEi, the voice data are packeted and transferred to a packet exchange 1. When V<VEi, the voice data are annulled. Consequently, background noise, i.e. ineffective data, is not packeted, and effective use of a packet exchange and junction circuits that connect plural packet exchanges becomes possible.

Description

[Detailed description of the invention] TECHNICAL FIELD The present invention relates to packet switching systems, and more particularly.

The present invention relates to a voice packet switching system in which a telephone is housed in a packet switch and voice data packets are exchanged via a digital switching device (hereinafter abbreviated as VOCODER) that converts voice signals into digitized voice data.

Conventionally, in the voice packet switching system where a telephone device is accommodated in a packet switch and voice data packets are exchanged via VOCODER, VOC! All audio data input from the telephone via 0DER was unconditionally packetized. Therefore, if the background noise level in the environment where the telephone is installed is high, the surrounding noise will be packetized even when the telephone user is not actually talking during a call, so packet switching , processing of invalid data requires processing capacity and resources of the exchange.

Furthermore, there is a drawback that the effective use of relay lines connecting multiple packet switches is hindered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a voice packet switching system that eliminates the above two drawbacks and makes effective use of the processing capacity and resources of a packet switch and trunk lines connecting a plurality of packet switches.

According to the present invention, in a voice packet switching system in which a telephone device is housed in a packet switch and voice packets are exchanged via a digital conversion device that converts a voice signal into digitized voice data, the above-mentioned telephone device is installed. A voice packet switching method is obtained, characterized in that a determination value is set for detecting background noise in an environment in which a voice packet is to be exchanged, and a functional unit is provided that determines whether or not packetization should be performed based on the determination value. .

Next, two embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, the voice packet switching system according to an embodiment of the present invention is a digital switching device (VOCODER).
A communication control device 2 is provided between the packet switching device 3 and the packet switching device 1. This communication control device 2 is.

A judgment value VEj for detecting background noise in the environment in which the telephone set 4 is installed is set, and it has a function of determining whether or not packetization should be performed based on the judgment value VE1. Then, the 1 communication control device 2 packetizes the voice data input from the telephone 4 via the VOCODER 3 and transfers it to the packet switch 1 only when it is determined that the voice data should be packetized.

A packetization condition determination module 5 is provided within the communication control device 2 . Packetization condition determination module 5
has a series of packetization condition judgment values ■E1. The communication control device 2 is.

Amplitude value in audio data input from VOCODER3■
Read.

■If VEj, the voice data is packetized and transferred to the packet switch 1.

V<　Vg□ In this case, the audio data shall be discarded.

The value of VEi is determined when the communication control device 2 uses the VOCODER 3 when the telephone 4 is on a call and the user is not talking.
The average value of the amplitude values of audio data received from

The present invention provides a digital conversion device (V
In a voice packet switching system in which a telephone device is housed in a packet switch and voice packets are exchanged via OCODE II), the conditions for packetization of voice data are determined according to the background noise level of the environment where the telephone device is installed. By setting a value and packetizing the audio data based on it.

Background noise, which is invalid data, is no longer packetized. Therefore, there is an effect that the packet switch and the relay line connecting the plurality of packet switches can be effectively used.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a voice packet switching system according to an embodiment of the present invention. 1: Packet switch, 2: Communication control device, 3: fi
CY 9 Exchange device (VOCODER), 4
: Telephone device, 5: Packetization condition determination module.

Claims (1)

[Claims] 1. In a voice packet switching system in which a telephone set is housed in a packet switch and voice packets are exchanged via a digital conversion device that converts a voice signal into digitized voice data, a telephone set is installed. 1. A voice packet switching system, characterized in that a determination value for detecting background noise in the environment is set, and a functional unit is provided for determining whether or not packetization should be performed based on the determination value.