Translation of "Gerufenen teilnehmer" in English

No participant who has been called receives the call marked as a missed call in the journal.

The connection set-up messages spread out in every direction from the calling subscriber to the called subscriber.

By virtue of the address, the respective line terminator is activated, the message character is transferred to the latter and transmitted to the called subscriber by way of the outgoing line.

For duplex operation, a knowledge of the called state or calling state is also required for selection of a proper channel position, because, according to CCITT, the data of the calling subscriber are, in principle, transmitted to the called subscriber via Channel 1, whereas Channel 2 serves for transmission in the opposite direction.

When the matrix path is in proper order, then the through-connection occurs and the internal set IS transmits the free tone to the calling subscriber and the call signal to the called subscriber.

In response thereto, the central controller CC activates the reporting procedure that, with the assistance of the subscriber line number input by the called subscriber, searches the table and forwards the address of the exchange set AS assigned to the subscriber line number to the central controller CC.

What this means for the call subscriber is that he should seek out a subscriber set of the telephone private branch exchange as quickly as possible and that he must identify himself thereat on the basis of a previously-declared identifying number if the connection is to be completed.

To start with, the receiver is usually lifted and a number is dialled to establish a connection between one subscriber in the first network N1 and the called subscriber.

The establishment of the connection between a calling subscriber in one of the networks N2, N3 and a called subscriber in the first network N1 will be discussed later.

When the matrix path is in proper order, then the through-connection occurs and the internal set IS transmits the free tone to the calling subscriber and the call signal to the called subscriber.

A switching arrangement according to claim 1, for telephone exchange systems which first establish a connection up to the desired subscriber, with seizure monitoring following thereafter, and wherein in the case of a free subscriber station, by means of an additional control signal, the telephone supervisory signal to the called subscriber is suppressed and an acoustic signal (free or occupied) is sent in the reverse direction, said special connecting set means having an acoustic signal receiver (HZE) for converting these acoustic signals into control signals for the special facility (ZSE).

A calling subscriber (A) requests a connection to a called subscriber who is assigned to a geographical area (LOC2), whose number range is shared by two or more subscriber access networks (LN21 to LN23) of different network operators (OP21 to OP23).

A method as claimed in claim 1, wherein the operator code (KOP23) is determined from the directory number (N) of the called subscriber (B) and inserted into the connection request.

It is also possible that the call number N is a logical network address or an address that identifies the called subscriber.

During the establishment of a call from a calling subscriber (A) to a called subscriber (B), the service control unit (SCP) is triggered.

A subscriber access assigned to the called subscriber (B) is then determined by means of the directory number (N) and the operator code (KOP23).

The latter is not dependent on the called subscriber and can be freely chosen by subscriber A.

Introducing this code makes a simpler and above all uniform call routing possible, in which a connection request can only be routed to the called subscriber by evaluating these parameters.

It further routes the charging of the fees in such a way, that the applicable fees for the connection are charged to the called subscriber.

The invention relates to a method and a device for establishing a connection from a calling A-subscriber to a called B-subscriber in a telecommunication (TC) network that offers IN (=Intelligent Network) services, in particular in a multi-operator environment with IN-supported telephone number portability.

For a calling A-subscriber, who would like to request a particular service offered in the TC network, though, there is the problem that possibly, only after finishing establishment of a connection, when the connection to the called B-subscriber has been made, does the A-subscriber determine that the latter does not even offer the requested service.

It is also advantageous if the TC network maintains a property profile of both the calling A-subscriber and the possible called B-subscribers so that during the establishment of a connection, by comparing the corresponding property profiles, a determination can be made as to whether in addition to the service profile of the called B-subscriber, other reasons cannot also be in keeping with completely ending the establishment of a connection.

The scope of the invention also includes a device for carrying out the method according to the invention, which is distinguished by virtue of the fact that in a TC network, a large number of subscriber switching centers are provided, which can in particular also be service switching points and via which the subscribers can gain access to the network, that at least one primary service control point in the form of a server is provided, by way of which a connection between a calling A-subscriber and a called B-subscriber is established over the respectively appropriate service switching point, and that in the service control point, a service profile of the is called B-subscriber, which profile is stored in its appropriate subscriber switching center, or in the appropriate service switching center, or in the service control point itself, can be compared for compatibility with the service requested by the calling A-subscriber, by means of a logic circuit.

After this, the SSP sends an IN inquiry to a primary SCP, in which inquiry, in addition to the actual telephone number of the B-subscriber called by the A-subscriber now according to the invention, a signal is also sent along with it, encoded as a parameter, and this signal is characteristic for the service requested by the A-subscriber.