| 摘要 |
In order to create message connections for group and/or multiaddress calls for subscriber terminals at least one of which is a mobile telephone device (TM111) in a mobile telephone network (M1), a conference bridge (KB10) is connected in the mobile telephone network (M1) through which the transmission channels of a number of subscriber devices can be interconnected. The transmission channels of the dispatchers and the uplinks of the other subscriber devices are connected to the inputs of the conference bridge, while the common output signals of the conference bridge are distributed to all the subscriber devices. To allow the possibility of including subscriber devices outside the area served by a mobile telephone exchange, data are requested by a group call anchor mobile telephone exchange (MSC10) from a group call register (GCR10) with the help of which in other mobile telephone exchanges (MSC12, MSC20) one of the following occurs: either individual call requests for individual subscriber devices in the areas served by these other mobile telephone exchanges (MSC12, MSC20) and/or in a fixed network (F1, F2) can be made, without a second conference bridge being connected in each of the areas served by the other mobile telephone exchanges (MSC12, MSC20); or a second group or multiaddress call request is made in the area served by another mobile telephone exchange (MSC112, MSC20), a second conference bridge (KB12) being connected; or a second group- or multiaddress call request is made via the fixed network (F1) in a second mobile radio network (M2). |
