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:
Dec. 30, 1997
Filed:
May. 10, 1996
Walter Ghisler, Upplands Vasby, SE;
Telefonaktiebolaget LM Ericsson (publ.), Stockholm, SE;
Abstract
A radio-associated telecommunications network (RLL) comprises a radio base station (BS2) and a radio station (MS1) having a control unit (AD1) which serves a first subscriber apparatus (AB1). A public switched telecommunications network (PSTN) having an exchange (VX2) serves a second subscriber apparatus (AB2), this network being connected to the radio base station (BS2). As the telephone receiver of the first subscriber apparatus (AB1) is lifted, an off-hook signal (HS) is sent to the control unit (AD1). This unit delivers to the radio station (MS1) a transmission signal (S2) and an address (B2). which points to the exchange (VX2). A signalling channel (ACC) to the radio base station (BS2) is set-up and the address (B2) is sent on this channel. The radio base station (BS2) sets-up a traffic channel (TCH1) to the radio station (MS1) and establishes a connection (CON1) to the exchange (VX2) with the aid of the address (B2). The exchange (VX2) sends a dial tone (RT) to the first subscriber apparatus (AB1), over the traffic channel (TCH1). A telephone number (NR2) to the second subscriber apparatus (AB2) is now dialled on the keypad of the subscriber apparatus (AB1) and the second subscriber apparatus (AB2) transmits the telephone number to the exchange (VX2) digit by digit via the traffic channel (TCH1). The exchange establishes a second connection (CON2) to the second subscriber apparatus (AB2), sends a ring signal (RS2) and receives an off-hook signal (HS2). This initiates combining of the connections (CON1, CON2) so that the subscriber apparatus (AB1, AB2) are able to communicate via the traffic channel (TCH1).