Telefonaktiebolaget Lm Ericsson (publ)

Nokia Corporation

Gábor Paller

Attila Mihály

Hubert Przybysz

Magdolna Gerendai

Mihaly Toth

Bence Cserna

Markosz Maliosz

A protocol conversion gateway and a method therein for enabling a client, which client does not support a Session Initiation Protocol (SIP) transport protocol, to communicate with a SIP proxy are provided. The method comprises receiving a first SIP message, over a non-standard SIP transport protocol, from the client. The method further comprises inserting a SIP address of the protocol conversion gateway in at least one header of the received SIP message, and sending the SIP message to the SIP proxy over a standard SIP transport protocol.

Gateway and a method therein for enabling SIP communication over a non-standard SIP transport protocol

A first user device establishes a video telephony session with a second user device over a best effort network. The voice quality for the video telephony session is upgraded by establishing a voice call with the second user device over a telephony network providing a quality of service guarantee for the voice call, and coupling the voice call over the telephony network with the video telephony session.

Internet protocol video telephony with carrier grade voice

The invention relates to a method of carrying out a transaction involving transmission of data over a link between and a mobile terminal and a gateway. The data is in the form of a plurality of data messages wherein each message comprises at least one data packet. The number of messages is not predetermined. The method comprising the steps of: the mobile terminal acknowledging receipt of data packets so as to provide a reliable connection; the gateway notifying the receiver of the last data packet in each data message; and the sender notifying the receiver of the last data message. The invention is particularly applicable to transactions carried out according to the Wireless Transaction Protocol.

Data transmission

Growing community of inventors

Budapest, Hungary

Gábor Paller