UN PROCESO PARA CONMUTAR UNA VIA DE TRANSMISION HACIA OTRA VIA DE TRANSMISION EN UNA CENTRAL DE MODULACION POR IMPULSOSCODIFICADOS.

摘要

A system is shown for switching PCM signals from a normal transmission path to an emergency transmission path when a normal path fails. Transmission is suspended during a period equal to at least the longest transmission time to prevent the transmission of incomplete data or check signals over the emergency path. After the time period elapses, transmission is maintained over the emergency path.