The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2001
Filed:
Nov. 04, 1997
Magnus Hallenstål, Täby, SE;
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Abstract
The present invention relates to a method for telecommunications and a device for that method. A first time slot is assigned for a first channel (,) between a first local exchange (LEA) to which a first subscriber (A) is connected or is being connected, and a second local exchange (LEB) to which a second subscriber (B) is connected or is being connected. A second time slot is assigned for a second channel (,) between the first local exchange (LEA) and a third local exchange (LEC) to which a third subscriber (C) is connected or is being connected. The first subscriber (A) makes a request that the second subscriber (B) and the third subscriber (C) shall continue to be or shall become connected, while the first subscriber (A) is disconnected. According to the invention, a transmitter (,) sends at least one tone in one of the time slots, a timer (,) is started and a receiver (,) listens in the other time slot. If the receiver (,) has not detected the tone before the timer (,) has elapsed, the request is executed.