| 摘要 |
The present invention relates to a method and apparatus for through-connecting in a digital time switch a wideband connection including two or more channels. Each of the channels utilises a specific time slot in each frame coming into the switch, and a specific time slot in each frame departing from the switch. The problem solved by the invention is that the contents in certain outgoing time slots are delayed by one frame, whereas the contents in other outgoing time slots (so-called undelayed slots) are not delayed, which causes the information sequence in outgoing slots to be mixed up in relation to the information sequence in corresponding incoming slots, whereby the transmitted information is distorted. The method solving said problem involves that the content in delayed slots is read out from a speech store, the contents of which are in phase with the contents in an incoming frame, while the contents in undelayed slots is read out from an extra speech store, the contents of which are delayed one frame in relation to the contents in the incoming frame. The contents in undelayed times slots are thus delayed by one frame so that the contents in all time slots departing from the wideband connection are delayed by one frame, resulting in that the information is connected through the switch without being distorted. |
