Utilization of a local exchange network by a plurality of local network operators

1. A switching center to connect telecommunications terminals of subscribers to a telecommunications network, comprising:

subscriber lines connecting each telecommunications terminal with the switching center, the switching center operated by a first network operator and used by other network operators,

each network operator has its own connection paths in the telecommunications network, each subscriber line and each subscriber assigned to one of the network operators, and each subscriber, to establish a telecommunications connection, dialing up the switching center via a respective network operator assigned to a respective subscriber with the telecommunications terminals, wherein

the central control device routes the telecommunications connection, based on the network operator to which each subscriber is assigned in the switching center, wherein

routing takes place at least partially by way of the connection paths of the network operator, assigned to a respective subscriber.

2. The switching center according to claim 1 , further comprising first intermediate exchange lines to connect the switching center with additional switching centers, the intermediate exchange lines assigned to several network operators.

3. The switching center according to claim 2 , further comprising second intermediate exchange lines to connect the switching center with one or more additional switching centers, which serve as an interconnect gateway for the transition of a telecommunications connection from the telecommunications network of one network operator to the telecommunications network of another network operator.

4. The switching center according to claim 1 , wherein the transition of a telecommunications connection from the telecommunications network of one network operator to the telecommunications network of another network operator takes place in the switching center.

5. The switching center according to claim 1 , further comprising a central control device to control functions that relate to the telecommunications connection, based on the network operator to which each subscriber is assigned in the switching center.

6. The switching center according to claim 1 , wherein the central control device calculates charges for the telecommunications connection, based on the network operator to which each subscriber is assigned in the switching center.

7. The switching center according to claim 6 , wherein the central control device controls functions that relate to the telecommunications connection, based on the switching center functions “origination dependent routing” and “origination dependent zoning.”

8. The switching center according to claim 1 , wherein the subscriber lines connect analog telecommunications terminals.

9. The switching center according to claim 1 , wherein the subscriber lines connect ISDN telecommunications terminals.

10. The switching center according to claim 1 , wherein the subscriber lines connect telecommunications terminals for data transmission using xDSL transmission methods.

11. The switching center according to claim 1 , wherein the subscriber lines connect telecommunications terminals using packet-oriented transmission methods.

12. A method for operating a switching center to connect telecommunications terminals of subscribers to a telecommunications network having subscriber lines, comprising:

connecting the telecommunications terminal with the switching center;

operating the switching center by a first network operator and used by other network operators;

each network operator has its own connection paths in the telecommunications network assigning each subscriber line and each subscriber to one of the network operators, and the subscribers to establish a telecommunications connection; and

dialing up the switching center via a respective network operator assigned to a respective subscriber with the telecommunications terminals, wherein

functions that relate to the telecommunications connection are controlled as a function of the network operator to which each subscriber is assigned in the switching center, and

routing takes place at least partially by way of the connection paths of the network operator, assigned to a respective subscriber.

13. The method according to claim 12 , further comprising routing the telecommunications connection as a function of the network operator to which each subscriber is assigned in the switching center.

14. The method according to claim 12 , further comprising calculating charges for the telecommunications connection as a function of the network operator to which each subscriber is assigned in the switching center.

15. The method according to claim 12 , wherein control of the functions that relate to the telecommunications connection is performed on the basis of the switching center functions “origination dependent routing” and “origination dependent zoning.”

16. The method according to claim 12 , wherein the switching center is administered by the first network operator.

17. The method according to claim 12 , wherein the transition of a telecommunications connection from the telecommunications network of one network operator to the telecommunications network of another network operator occurs in the switching center.

18. The method according to claim 12 , wherein transition of a telecommunications connection from the telecommunications network of one network operator to the telecommunications network of another network operator occurs via an additional switching center.