Wired public telephone network has message transmission devices for transmitting text messages in e-mail or SMS format e.g. using speech-to-text conversion

摘要

The telephone network includes network-internal message transmission devices (9) which are provided for each switching centre (3A,3B) or service node, for transmitting text messages in the format of an e-mail an/or short message (SMS) text from one subscriber to a second subscriber as a tele-service. The message transmission devices may include a converter (11a) for speech-to-text and a converter (11b) for text-to-speech conversion, to allow speech input and/or output of a text message is possible via the transmitter or receiver of a telephone (5A,5B).