Telefonaktiebolaget Lm Ericsson (publ)

Optis Wireless Technology, LLC

Johan Lundström

Klaus Turina

Kari-Pekka Perttula

Harri Hakala

Arto Juhani Mahkonen

Patrik Teppo

Leena Marjatta Mattila

Timo Suihko

Paul Martlew

David Sjöstrand

Mikko Viitanen

Esa Hoisko

Patrik Nilsson

Systems and methods for dynamically causing a terminal to change audio codec modes during a session with another terminal. In one aspect, the terminal is forced use to switch to a more resilient audio codec mode when the quality of wireless channel being used by the terminal deteriorates below a threshold.

Systems and methods for dynamic switching of codec modes of operation used by a terminal

The invention relates to a method for disabling a discontinuous transmission node DTX of a speech encoder if a music signal is detected in a call input signal. The music signal is detected by determining an activity factor corresponding to the relation of sound signal periods relative to scheme signal periods. If the activity factor is higher than a specified activity factor, the DTX is disabled.

Switching off DTX for music

A signalling proxy system for a switching center server is provided, as well as a method of operating a signalling proxy system for a switching center server. The signalling proxy system comprises two signalling proxies for routing signalling traffic between a network node and a plurality of switching center server units. Each signalling proxy is addressable by an address code and is operable in one of an active state and a passive state towards the network node.

Signalling proxy system for a switching center server, wherein an indication of operation in an active state is transmitted from a signaling proxy via at least one processing blade to the remaining signaling proxies

Apparatus configured to operate within a communication network as a pool proxy, routing signalling traffic between a node of a first network and one of a set of pooled nodes within a second network. The apparatus is further configured to operate in one of an active state and a passive state towards the first network node and, when in said active state to send a heartbeat signal to at least one of said pooled nodes for relaying to a peer pool proxy and, when in said passive state, to receive a heartbeat signal from a peer pool proxy relayed via at least one of said pooled nodes. In the event that no heartbeat signal is received when in the passive state, the apparatus is configured to activate itself as pool proxy towards the first network node.

Mobile core network node redundancy

A method of updating routing tables stored at a multiplicity of Signaling End Points (SEPs) of an SS7 over IP signaling network following the introduction of a new SEP into the network. The new SEP sends a message to an existing SEP, the message identifying an IP address and SS7 address(es) of the new SEP. The existing SEP adds the IP address and SS7 address(es) of the new SEP to the routing table(s) stored at the existing SEP, and forwards the message to other SEPs identified in the routing table(s) at the existing SEP. The other SEPs add the IP address and SS7 address(es) of the new SEP to their routing tables. Each SEP that receives the message sends a response message to the new SEP containing the IP and SS7 addresses of the responding SEP, and the new SEP populates its routing table(s) using the contents of the response messages.

IP based signalling networks

A method of providing charge information to a user of a mobile terminal (), which information relates to an IP connection or connections being used by the user. The method comprises the steps of identifying the terminal () or the user to a charge control node (CCN) () located in a home network () of the terminal () or user and, for the duration of the IP connection(s), using the existing connection or one of the existing connections to transport a stream of charge information messages from the CCN () to the mobile terminal ().

Charge advice in telecommunication systems

A method of enabling charging information generated within a GPRS access networkto be associated with charging information generated within an IP Multimedia Core Network Subsystem, IMSS, the charging information relating to a multimedia call facilitated by the IMSS and carried by the GPRS network. The method comprises sending a SIP call identity from the IMSS to the GPRS network and/or a GPRS charging identity from the GPRS network to the IMSS. A received identifier is included in charging information messages generated by one or both of the GPRS network and the IMSS.

Association of charging between communication systems

The present invention relates in general to communication networks and more specifically to a system and a method for charging in a communication network, especially in an IP Multimedia network. The new charging system allows charging principles used in traditional telecom networks to be applied also in IP Multimedia networks.

Growing community of inventors

Pargas, Finland

Johan Lundström