(19)
(11) EP 0 235 179 A1

(12)

(43) Date of publication:
09.09.1987 Bulletin 1987/37

(21) Application number: 86904693.0

(22) Date of filing: 11.07.1986
(51) International Patent Classification (IPC): 
H04J 3/ 06( . )
H04L 7/ 10( . )
H04L 7/ 04( . )
(86) International application number:
PCT/US1986/001498
(87) International publication number:
WO 1987/001490 (12.03.1987 Gazette 1987/06)
(84) Designated Contracting States:
AT CH DE FR IT LI NL SE

(30) Priority: 30.08.1985 US 19850771458
30.08.1985 US 19850771460

(71) Applicant: MOTOROLA, INC.
Schaumburg, IL 60196 (US)

(72) Inventors:
  • LEVINE, Stephen, Norman
    Chicago, IL 60634 (US)
  • LEITICH, Albert, J.
    Chicago, IL 60625 (US)

   


(54) RADIOTELEPHONE SYSTEM EMPLOYING DIGITIZED SPEECH/DATA AND EMBEDDED SIGNALLING