Jenkens & Gilchrist, P.C.
Method and apparatus for providing an improved caller interface in a fixed cellular communications system
 In a fixed cellular telephone system, an improved caller interface is provided wherein the taking of a standard wireline telephone set off-hook triggers the establishment of a voice path between the telephone set and the cellular system switch. A dial tone is then applied by the cellular system to the voice path and a caller enters the digits of the telephone number of the party to which the call is directed. The caller dialed digits are transmitted over the voice path to the cellular system switch where they are processed to complete the call connection to the called party. The dialed digits are further analyzed on a one-by-one basis to determine whether improper or unauthorized digits or combinations of digits have been entered by the caller. The caller interface provided by the fixed cellular system of the present invention accordingly operates in a substantially identical manner to that experienced with a conventional wire-based telephone system and in an improved manner over that provided in a conventional cellular system. 
Telefonaktiebolaget LM Ericsson
H
H04W
inventional
Håkan Daniel Kim Phuong
Olsson Dufour Vo