Method and apparatus for adjusting the bandwidth of a connection between at least two communication endpoints in a data network

1. A method for adjusting a bandwidth of a connection between at least two communication endpoints in a data network, the method comprising the steps of:

assigning the connection at least one transmission channel for data transmission, the connection including a signaling connection and a user channel connection;

transmitting user data in packet-oriented form via the user channel connection between the communication endpoints;

allocating the user data to at least one communication connection;

monitoring, via a monitoring unit, the signaling connection for requests for at least one further communication connection;

signaling to a control unit, via the monitoring unit and in the event of a request, to assign to the connection at least one additional free transmission channel for the requested at least one further communication connection;

carrying out a check to determine whether the bandwidth is sufficient for the requested communication connection;

determining whether an appropriately large number of transmission channels are free for the bandwidth requirements for the requested communication connection;

storing the connection request in a queue; setting up free transmission channels;

deleting the stored connection request; and assigning the set-up transmission channels to the user channel connection.

2. A method for adjusting a bandwidth as claimed in claim 1 , the method further comprising the step of rejecting a signaled request if all available transmission channels are busy.

3. A method for adjusting a bandwidth as claimed in claim 1 , wherein the user data is transmitted using a Voice-over Internet protocol.

4. A method for adjusting a bandwidth as claimed in claim 1 , wherein the communication connection includes a TCP port number.

5. A method for adjusting a bandwidth as claimed in claim 4 , wherein the request for a communication connection is signaled via a message to the TCP port number.

6. A method for adjusting a bandwidth as claimed in claim 1 , wherein the packet-oriented transmission of the user data is carried out via TCP/IP.

7. An apparatus for adjusting a bandwidth of a connection between at least two communication endpoints in a data network, comprising:

a router having both a monitoring unit and a control unit, with the monitoring unit being connected to the control unit via a signal line, wherein the connection is assigned at least one transmission channel for data transmission, with the connection including a signaling connection and a user channel connection, user voice-over IP data is transmitted in packet-oriented form via the user channel connection between the communication endpoints, the user data is allocated to at least one communication connection, the monitoring unit monitors the signaling connection for requests for at least one further communication connection and, in the event of a request, signals to the control unit to assign to the connection at least one additional free transmission channel for the requested at least one further communication connection,

wherein the monitoring unit carries out a check to determine whether the bandwidth is sufficient for the requested communication connection and determines whether an appropriately

and wherein the control unit stores the connection request in a queue; setting up free transmission channels and deletes the stored connection request and assigns the set-up transmission channels to the user channel connection.

8. An apparatus for adjusting a bandwidth as claimed in claim 7 , further comprising a measurement unit as part of the router for measuring a data throughput rate of the transmission channels of the connection.

9. An apparatus for adjusting a bandwidth as claimed in claim 7 , wherein the communication endpoints are at least one of telecommunication systems, ISDN terminals and personal computers with data network connections.

10. An apparatus for adjusting a bandwidth as claimed in claim 7 , wherein the router is a component of a telecommunication system.

11. An apparatus for adjusting a bandwidth as claimed in claim 10 , where the telecommunication system has a LAN connection for connection to at least one of personal computers, IP telephones with a LAN connection and further telecommunication systems via a LAN.

12. An apparatus for adjusting a bandwidth as claimed in claim 10 , wherein the telecommunication system is an ISDN telecommunication system with one of a base rate connection and a primary rate connection.