Abstract: A telecommunications system distributes text-to-speech synthesis between a telephone network and a telephone subscriber unit. The telephone network receives a telephone call from a first telephone subscriber unit over a first communication channel intended for a second telephone subscriber unit, determines that the second telephone subscriber unit subscribes to a speech-based caller identification service provided by the telephone network, converts text information, representing the caller identification of the first telephone subscriber unit into symbols, encodes the symbols to form a data stream, opens a second communication channel between the telephone network and the second telephone subscriber unit, and sends the data stream to the second telephone subscriber unit over the second communication channel.

Abstract: A telecommunications system (600) distributes text-to-speech synthesis (900) between a telephone network (603) and a telephone subscriber unit (602). The telephone network (603) receives (1102) a telephone call from a first telephone subscriber unit (601) over a first communication channel (604) intended for a second telephone subscriber unit (602), determines (1103) that the second telephone subscriber unit (602) subscribes to a speech-based caller identification service provided by the telephone network (603), converts (1107) text information (707), representing the caller identification of the first telephone subscriber unit (601) into symbols (708), encodes (1108) the symbols (708) to form a data stream (709), opens (1109) a second communication channel (605) between the telephone network (603) and the second telephone subscriber unit (602), and sends (1110) the data stream (709) to the second telephone subscriber unit (602) over the second communication channel (605).