Abstract: A new method for initiating a telecommunication service is specified, which is independent of a call being set up after initiation by a service user. The application protocol (also called the IN Service Logic) is initiated by a so-called external trigger, or else a virtual trigger.

Abstract: Method for operating a private telecommunications network which is connected via at least one multichannel private branch exchange or a comparable device, in particular a call server or a voice-over IP Gateway, with a plurality of real call numbers to a public telecommunications network, the private branch exchange or comparable device for a multiplicity of real call numbers being assigned a common virtual call number for access from the public network to which a call via a free real call number to the internal terminal of the direct dialing number is switched through.

Abstract: An operating method for a communication network to provide a chargeable service, in which service costs are subsequently billed and an estimated cost value is calculated in a service control center of the communication network on the basis of prestored tariff data. The estimated cost value is compared with a credit value and provision of the service is triggered or blocked in response to a verification signal signifying the result of the comparison.

Abstract: Method for presetting a mobile phone communications mode in a vehicle, in particular a motor vehicle, using at least one built-in mobile phone terminal or a built-in holder and a portable mobile phone terminal which fits in the latter, at least one communications function of the mobile phone terminal, or of at least one mobile phone terminal, being automatically controlled by a function of the vehicle or of a peripheral unit thereof and/or at least one separate data carrier, in particular a chip card or magnetic card, in such a way that various communications profiles are thus set.

Abstract: A method of billing for the use of a, in particular multimedia communications network on the basis of the associated cost factors for a transaction performed between a number of operators and a subscriber using a respective transaction, an operator/subscriber involved in the transaction and/or a further operator/subscriber uses the respective access device to settle accounts with a number of operators/subscribers in real time using a billing data record created, transmitted and processed in the communications network.

Abstract: Method for operating a private telecommunications network which is connected via at least one multichannel private branch exchange or a comparable device, in particular a call server or a voice-over IP Gateway, with a plurality of real call numbers to a public telecommunications network, the private branch exchange or comparable device for a multiplicity of real call numbers being assigned a common virtual call number for access from the public network to which a call via a free real call number to the internal terminal of the direct dialing number is switched through.