| 摘要 |
The invention relates to a method for handling a call coming via a digital transmission system (5, 6, 7) in terminal equipment (1, 2, 3, 4) suitable for speech and data service, the transmission system comprising at least one connection element (5) which is a speech transmission connection when the call is in speech service mode and which is a data transmission connection rate-adapted in compliance with the CCITT recommendation V.110 or in a like manner and preferably attached to V.24 interfaces when the call is in data service mode. In accordance with the invention, the terminal equipment (1, 2, 3, 4) starts the connection in speech service mode and automatically changes over to data service mode and initiates a procedure for changing said at least one connection element to a data transmission connection upon receipt, in speech mode, of a predetermined audio signal from the connection. The invention also relates to a mobile telephone embodying the method. |
