Method for transmitting data and related service data

A telecommunications system adapted to transmit data and service information associated with the data, the system comprising:

• an addressing device adapted to establish an address for storing and referencing by means of the address a set of service information received from a user terminal, wherein the address comprises a session identifier for a session initiated by the user terminal;
• a call identifier generator adapted to generate a call identifier which forms part of the address assigned to the set of service information and to be linked temporarily to the session identifier;
• a transmitter adapted to transmit the call identifier via a signaling link set up between two communications devices;
• and
• a branch identifier generator adapted to generate first and second branch identifiers, each linked to the session identifier, the branch identifier generator being adapted to be activated during setting up of first and second links both involving a same source communications device, any call identifier transmitted by the source communications device via one of the first and second links then being linked to the session identifier and to one of the first and second branch identifiers, respectively.