Tone detection elimination

Details Tone detection elimination Tone detection elimination

2007-05-22

2007-05-22

Muang, Zarni (Department: 2151)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S352000, C370S465000

Reexamination Certificate

active

09920362

ABSTRACT:
The present invention discloses a communication system comprising a first communication device, a first network control device for controlling a first network to which the first communication device is connected, and a first interface establishing device connected between the first network control device and a transmitting network. The first communication device and the first network control device are connected such that a use signal and a control signal are sent separately to the first network control device. Furthermore, the first network control device and the first interface establishing device are connected such that the use signal and the control signal are sent separately to the first interface establishing device. In the communication system according to the invention, the need for a tone detection in the first interface establishing means, i.e. the gateway for the network, for example an IP-based network, is eliminated. Hence, a simplified hardware structure can be achieved and disturbances of the use signal by the control signal can be reduced.

REFERENCES:
patent: 5983117 (1999-11-01), Sandler et al.
patent: 6009383 (1999-12-01), Mony
patent: 6256612 (2001-07-01), Vo et al.
patent: 6259691 (2001-07-01), Naudus
patent: 6298055 (2001-10-01), Wildfeuer
patent: 6392999 (2002-05-01), Liu et al.
patent: 6456618 (2002-09-01), Kozdon et al.
patent: 6553024 (2003-04-01), Hunlich et al.
patent: 6594256 (2003-07-01), Koide
patent: 6650662 (2003-11-01), Arnaud et al.
patent: 6775265 (2004-08-01), Oran
patent: 6785276 (2004-08-01), Valentine et al.
patent: 6856612 (2005-02-01), Bjelland et al.
patent: 6868080 (2005-03-01), Umansky et al.
patent: 0332345 (1989-09-01), None
patent: 0589619 (1994-03-01), None
patent: 2290005 (1995-12-01), None
patent: WO 97/50262 (1997-12-01), None
International Search report for PCT/EP99/00729.

Affiliated with

Also associated with

Rating

Tone detection elimination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tone detection elimination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tone detection elimination will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3783418