Method for reverse signalling of a transmission service which is to be used during a mobile terminated - pstn/isdn originated - call

The This invention relates to a method for reverse signaling one at a to be established from a first telecommunication network reputation to-use communication service, in which a mobile terminal the coverage of a digital mobile radio network from the first Telecommunication network is called the to use the transmission service which fully descriptive Information between the mobile terminal and a destination mobile switching center (Visited MSC) negotiated the digital mobile radio network, in the destination mobile switching center (Visited MSC) deposited and by at least one signaling message at least one involved in the call to be established gateway mobile switching center is transported (Gateway MSC), where provided.