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WITZEL ANDREAS
DE21 patents
Top patents by PatentIndex Score
US9667798B2May 30, 2017
Enabling a communication server to use MSC-S related functions
WITZEL ANDREAS7 citations84
US8537748B2Sep 17, 2013
Technique for performing GSM/WCDMA circuit switched services over a long term evolution radio access
WITZEL ANDREAS13 citations82
US9614876B2Apr 4, 2017
Provision of IMS services via circuit-switched access
WITZEL ANDREAS2 citations73
US8743868B2Jun 3, 2014
Method, devices and system of IMS services session control via USSD
WITZEL ANDREAS2 citations63
US8542672B2Sep 24, 2013
Call handling for IMS registered user
WITZEL ANDREAS2 citations63
US8249054B2Aug 21, 2012
Provision of packet-based services via circuit-switched access
WITZEL ANDREAS4 citations63
US8649777B2Feb 11, 2014
Presence service time zone information
WITZEL ANDREAS3 citations61
US8855105B2Oct 7, 2014
Call handling for IMS registered user
WITZEL ANDREAS0 citations52
US8441949B2May 14, 2013
Methods, apparatuses and computer program products for routing a call from a circuit switched domain to a unified service domain
WITZEL ANDREAS0 citations52
US8326298B2Dec 4, 2012
Technique for service domain selection
WITZEL ANDREAS0 citations52
US9584574B2Feb 28, 2017
Wideband codec negotiation
WITZEL ANDREAS1 citations51
US9538361B2Jan 3, 2017
Methods and apparatuses for registering a terminal in the IMS over a circuit-switched access domain
WITZEL ANDREAS0 citations42
US9237439B2Jan 12, 2016
Method and apparatus for configuring service settings for a mobile subscriber
WITZEL ANDREAS0 citations42
US9204471B2Dec 1, 2015
Enabling a communication server to use MSC-S related functions
WITZEL ANDREAS0 citations42
US9155113B2Oct 6, 2015
Terminating notification message for terminals in a target network area
WITZEL ANDREAS0 citations42
US8532091B2Sep 10, 2013
Method and apparatus for providing IMS services to circuit-switched controlled terminals
WITZEL ANDREAS0 citations42
US9191518B2Nov 17, 2015
Routing system for transferring data packets of a call
WITZEL ANDREAS0 citations41
US8774166B2Jul 8, 2014
Method of providing value added service in a packet switched telecommunications network and a service interface adapter for use in such method
WITZEL ANDREAS0 citations41
US8634326B2Jan 21, 2014
Method and node for the control of a connection in a communication network
WITZEL ANDREAS0 citations41
US8179796B2May 15, 2012
Method and node for providing a resource efficient connection in a communication network
WITZEL ANDREAS0 citations41
US9413898B2Aug 9, 2016
Technique for interconnecting circuit-switched and packet-switched domains
WITZEL ANDREAS0 citations40