(19)
(11) EP 1 256 240 A1

(12)

(43) Date of publication:
13.11.2002 Bulletin 2002/46

(21) Application number: 01905086.3

(22) Date of filing: 25.01.2001
(51) International Patent Classification (IPC)7: H04Q 7/22, H04M 7/00
(86) International application number:
PCT/US0102/571
(87) International publication number:
WO 0106/0091 (16.08.2001 Gazette 2001/33)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 08.02.2000 US 499923

(71) Applicant: Siemens AG
80333 München (DE)

(72) Inventors:
  • MENON, Narayan
    Colorado Springs, CO 80918 (US)
  • CARLTON, Alan
    Colorado Springs, CO 80903 (US)

(74) Representative: Patentanwälte Westphal, Mussgnug & Partner 
Waldstrasse 33
78048 Villingen-Schwenningen
78048 Villingen-Schwenningen (DE)

   


(54) METHOD AND SYSTEM FOR INTERWORKING VOICE SIGNALING MESSAGES BETWEEN CIRCUIT-SWITCHED AND PACKET-SWITCHED NETWORKS