Abstract: In a method for making a data transmission connection from a computer to a mobile communication network for transmission of analog and/or digital signals, the computer is connected to the mobile communication network by means of a telecommunication terminal which is in local data transmission connection with the computer. The telecommunication terminal utilizes at least a first operation mode and a second operation mode for connection to different types of mobile communication networks. There is testing to determine which operation modes of the telecommunication terminal are available in the mobile communication network. One of the operation modes of the telecommunication terminal available in the mobile communication network is selected for connecting the communication terminal to the mobile communication network. The telecommunication terminals set in the selected operation mode, and a data transmission connnection is set according to the selected operation mode.

Abstract: A method for interconnecting local area networks or network segments by means of a bridge. In the method, a local area network frame is received at the bridge and forwarded across the bridge if its destination address refers to a network or network segment on the other side of the bridge. In order that a bridge simple in structure can be utilized in cases where priority is to be assigned to terminal traffic over datafile transfer traffic, the length of the frame to be forwarded is determined for classification into a respective one of at least two categories, by length, and the obtained length classifications are utilized in the transmission of the frames for assigning priority to at least some of the shorter frames over the longer frames.