Abstract: The present invention relates to a method for monitoring media flow in a telecommunication network. The network comprises a media-handling node (MHN) through which, sessions between subscribers are transported via first ports (PI1-PI5) and second ports (PO1-PO5). An extra port (XP1-XP5) is assigned to the media-handling node (MHN) for each new session that is transported through the node. The method comprises the following steps: storing in a database (LI-DB), identification of a first subscriber (A) for which monitoring is desired; a connection is set-up between the first subscriber (A) and second subscriber (B); an assigned extra port (XP1) that is adherent to the session between the first and second subscriber (A, B) is connected; the session between the first and second subscriber is monitored via the connected extra port (XP1).

Abstract: The present invention relates to a method for monitoring media flow in a telecommunication network. The network comprises a media-handling node (MHN) through which, sessions between subscribers are transported via first ports (PI1-PI5) and second ports (PO1-PO5). An extra port (XP1-XP5) is assigned to the media-handling node (MHN) for each new session that is transported through the node. The method comprises the following steps: storing in a database (LI-DB), identification of a first subscriber (A) for which monitoring is desired; a connection is set-up between the first subscriber (A) and second subscriber (B); an assigned extra port (XP1) that is adherent to the session between the first and second subscriber (A, B) is connected; the session between the first and second subscriber is monitored via the connected extra port (XP1).

Abstract: The present invention relates to a method for monitoring media flow in a telecommunication network. The network comprises a control domain handling session control and a bearer domain handling media flow. The method comprises the following steps:—Storing in a database (LI-DB) in the control domain, identification of a first subscriber (A) for which monitoring is desired.—Setting up a connection between the first subscriber (A) and a second subscriber (B).—Sending an indicator (FLAG) from the control domain to the bearer domain indicating that the media flow that involves the first subscriber (A) is to be monitored.—Re-routing said media flow between the subscribers, via a server function (LI-S) in the bearer domain.—Monitoring the media flow that passes the server function (LI-S).

Abstract: A method and circuit for determining a unique word contained in received signals in a transmission system which operates with a multiple phase type of modulation at the transmitter and coherent demodulation at the receiver, the unique word being transmitted only as signals in two phases which are 180.degree. apart and the received signals being divided into orthogonal voltage components during demodulation, a single value whose algebraic sign is indicative of the unique word being derived by dividing the orthogonal components to form a quotient signal representative of the ratio therebetween, integrating the quotient signal over a plurality of clock pulse periods, multiplying the integrated quotient signal with one of the orthogonal components, and adding the resultant product signal to the other orthogonal component to form the single value.

Abstract: A method for detecting a predetermined code word contained in received signals in a transmission system which operates with a four-phase type of modulation at the transmitter and coherent demodulation at the receiver, the code word being transmitted only as signals in two phases which are 180.degree. apart and the received signals being divided into orthogonal voltage components during demodulation, which method includes selecting that one of the sum and difference of the voltage components which has the larger absolute magnitude value, and evaluating the received signal in accordance with the algebraic sign of that one of the sum and difference which is thus selected.