US6865266B1 - Methods and apparatus for transferring from a PSTN to a VOIP telephone
network - Google Patents US6865266B1 - Methods and apparatus for transferring from a PSTN …

The invention solves the above-noted problem and other problems of conventional Systems
by providing improved call processing in a CTI environment. In particular, the invention …

The invention relates to a session control entity, method and a computer program product for
receiving a request for a session, deciding on removal of a user plane gateway from a user …

Methods, systems, and computer readable media for providing legacy devices access to a
session initiation protocol (SIP) based network are disclosed. One exemplary system …

The present invention concern methods and apparatuses for handling public identities in an
Internet Protocol Multimedia Subsystem, IMS, network. A Serving Call Session Control …

A method for a Mobile Control Node, MCN, supporting handover of a packet switched, PS,
voice call of a given user entity anchored in a IP Multimedia Subsystem (IMS) to a circuit …

(57) ABSTRACT A Denial of Service (DoS) mitigation scheme increases the ability of a call
processing server to fend off DoS attacks. The DoS mitigation scheme identifies a probability …

(57) ABSTRACT IMS call control nodes and methods are disclosed for provid ing online
charging in an IMS network. An IMS call control node receives a call message from a CSCF …

An adaptation proxy, a computer system, a computer-imple mented method, and a computer
program product for enabling presence and remote call control services between client …

(57) ABSTRACT A call Screening method allows a Subscriber to Screen calls made to the
Subscriber from callers using the PSTN while the Subscriber uses another communications …