Nokia Siemens Networks Gmbh & Co Kg

Nokia Solutions and Networks Gmbh & Co. Kg

Pavel Dostál

Ivo Sedlacek

Di Zhou

Petr Gotthard

Cornelia Kappler

Erwin Postmann

Morten Schläger

Rainer Liebhart

The invention relates to a method for establishing a push-to-talk-(Ptt) communication link between two Ptt devices (), in which the data of different types, such as voice data (Sp), audio data (A), video data (V) etc., is transmitted between the Ptt devices (). The first Ptt device () transmits a Ptt link request, and subsequently a communication link is established for at least one selection of said different types of data via a communication channel (F, NF) according to a communication protocol. According to the invention, the Ptt link request contains priority information which enables the data types to be allocated a transmission priority, and the communication protocol only authorizes the communication channel (F, NF) to be established if the second Ptt-device () is available for the data type or for the data types having the highest transmission priority. The transmission of one data type, which has a lower transmission priority, by means of said communication channel (F, NF) is only authorized if the second Ptt-device () is available for said data type, and the second Ptt-device () is also available for all data types with a higher transmission priority.

Method for establishing a push-to-talk communication link

An operational method interfaces a second communication network containing an access node with a first communication network encompassing a contact node. In a first step, an access node reads or receives an identity which is specific for the second communication network and is stored in a storage medium of a memory node. Then an interfacing message containing the identity that is specific for the second communication network is transmitted from the access node to the contact node, which is defined by an address stored in the storage medium. A packet data service to the access node is supplied by the contact node such that the second communication network is interfaced with the first communication network. An assembly and a storage medium are provided for interfacing the second communication network with the first communication network.

Method for interfacing a second communication network comprising an access node with a first communication network comprising a contact node

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Morice, Czechia

Pavel Dostál