A conferencing client apparatus comprising: a client application comprising a web client, a voice over Internet Protocol, VoIP, client, and a client user interface, to allow a user to participate in a web conference, wherein the web client is configured to communicate with the VoIP client; a computer-readable medium with computer instructions stored therein that, when executed by one or more processors (502, 504, 506) cause the one or more processors to perform the following operations corresponding to the client application: sending a registration request from the VoIP client configured to conduct an audio portion of the web conference to a first registration device (162, 164) associated with a network able to provide a web portion and the audio portion of the web conference, the registration request including an identification of the VoIP client; receiving at the VoIP client a registration information of the VoIP client from the first registration device (162, 164); requesting by the web client configured to conduct the web portion of the web conference a dial-out call to be made from a conference network device to the VoIP client based on the received registration information from the VoIP client; and conducting at the VoIP client, in coordination with the web portion of the web conference, the audio portion of the web conference. a client application comprising a web client, a voice over Internet Protocol, VoIP, client, and a client user interface, to allow a user to participate in a web conference, wherein the web client is configured to communicate with the VoIP client; a computer-readable medium with computer instructions stored therein that, when executed by one or more processors (502, 504, 506) cause the one or more processors to perform the following operations corresponding to the client application: sending a registration request from the VoIP client configured to conduct an audio portion of the web conference to a first registration device (162, 164) associated with a network able to provide a web portion and the audio portion of the web conference, the registration request including an identification of the VoIP client; receiving at the VoIP client a registration information of the VoIP client from the first registration device (162, 164); requesting by the web client configured to conduct the web portion of the web conference a dial-out call to be made from a conference network device to the VoIP client based on the received registration information from the VoIP client; and conducting at the VoIP client, in coordination with the web portion of the web conference, the audio portion of the web conference. sending a registration request from the VoIP client configured to conduct an audio portion of the web conference to a first registration device (162, 164) associated with a network able to provide a web portion and the audio portion of the web conference, the registration request including an identification of the VoIP client; receiving at the VoIP client a registration information of the VoIP client from the first registration device (162, 164); requesting by the web client configured to conduct the web portion of the web conference a dial-out call to be made from a conference network device to the VoIP client based on the received registration information from the VoIP client; and conducting at the VoIP client, in coordination with the web portion of the web conference, the audio portion of the web conference.