Method for using digital data networks for the transmission of data via voice connection paths

Abstract

A method for reducing bandwidth when transmitting data between a sending terminal and a receiving terminal over a voice connection path using a digital data network. The coding of user information is converted within the digital data network between data transmission in the voice connection path and data transmission in the digital data network so that the user information is transmitted on one section of the digital data network via the coded voice connection path and the user information is transmitted on another section of the digital data network using a method suitable for the digital data network.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation of U.S. patent application Ser. No. 09 / 673,520, issuing as U.S. Pat. No. 7,512,152, which was the national stage of PCT / EP99 / 01284, filed on Feb. 27, 1999, which claimed priority to German Patent Application No. DE 19817007.6, each of which is expressly incorporated herein in its entirety by reference thereto.FIELD OF THE INVENTION[0002]The present invention relates generally to a method for using digital data networks, and in particular, to a method for reducing bandwidth when transmitting data between a sending terminal and a receiving terminal over a voice connection path using a digital data network.RELATED TECHNOLOGY[0003]For the purpose of data transmission, communication networks exist which are used exclusively for transmitting digitally coded data (data, voice, tone signals, images) between terminals, and which have been suitably optimized for this application purpose.[0004]Owing to the l...

AI Technical Summary

Benefits of technology

[0030]A further advantage of the present invention can be seen in that, in contrast to the already known use of data networks for the real-time transmission of FAX information, the method according to the present invention can be implemented significantly more cost-effectively. Thus, using the present invention, the conversion from data modulation in the voice connection path to data transmission in the data network can be effected at a central location of the data network. Consequently, depending on the limiting condition, it is possible to decide individually for each connection whether, for one or more sections, data transmission in the voice connection path is to be converted or not. In the case of connections using only transmission links having sufficiently great transmission reserves, the more cost-effective solution might be to transmit the data in the voice connection path routed via a data network, without additional conversion. If, however, long sections have to be routed over heavily loaded transmission links of the data network, then the data transmission conversion implemented by the method according to the present invention can significantly reduce the data rate on the heavily loaded sections.

can be seen in that, in contrast to the already known use of data networks for the real-time transmission of FAX information, the method according to the present invention can be implemented significantly more cost-effectively. Thus, using the present invention, the conversion from data modulation in the voice connection path to data transmission in the data network can be effected at a central location of the data network. Consequently, depending on the limiting condition, it is possible to decide individually for each connection whether, for one or more sections, data transmission in the voice connection path is to be converted or not. In the case of connections using only transmission links having sufficiently great transmission reserves, the more cost-effective solution might be to transmit the data in the voice connection path routed via a data network, without additional conversion. If, however, long sections have to be routed over heavily loaded transmission links of the data network, then the data transmission conversion implemented by the method according to the present invention can significantly reduce the data rate on the heavily loaded sections.

Problems solved by technology

Owing to the limited worldwide availability of such networks, even today a multitude of data is still transmitted over analog voice connection paths.

This means that the theoretically possible useful data rate of a digital transmission link over which the low-bit-rate data must be transmitted is not fully utilized.

However, this is very disadvantageous when the transmission capacity thus utilized is particularly expensive, as is the case, for example, with satellite connections or overseas cables.

All these known methods suffer from the serious disadvantage that they are limited only to the transition between various services and to the conversion of individual services handled via a voice connection in the voice connection path.

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