Patent ID: 6292496
Filing Date: 2001-09-18
Classification: H04B,H04L

Abstract:
An asynchronous data transmission method for transmitting asynchronous data characters and status information of a terminal interface and possibly other control or synchronization information through a synchronous traffic channel or a set of synchronous traffic channels in a telecommunication system, comprising the steps ofA) at a transmitting end:removing a predetermined number of start bits and stop bits from between said asynchronous data characters received from the terminal interface,concatenating said asynchronous data characters lacking said start and stop bits, and said terminal interface status information and possibly other control or synchronization information into a protocol data unit beginning with a start bit and ending with a stop bit,processing the protocol data unit according to an asynchronous-to-synchronous conversion,transmitting the processed protocol data unit to a receiving end through said synchronous traffic channel or set of synchronous traffic channels,B) at the receiving end:extracting said asynchronous data characters, the terminal interface status information and the possible other control or synchronization information from said protocol data unit,adding start and stop bits to said extracted asynchronous data characters in order to restore said original asynchronous data characters.