| 摘要 |
<p>PURPOSE:To attain data communication with high accuracy by providing a MODEM pool trunk applying the correction of a start-stop data and avoiding the sampling distortion caused by time division exchange. CONSTITUTION:A MODEM interface trunk 5 is provided with a start-stop data detection means 1 to detect the presence of a start-stop data and a clock pulse generating means 3 to generate a clock pulse corresponding to the speed by using the speed information of the external start-stop data. Moreover, the system is provided with a clock pulse adjustment means 2 to adjust the phase of a clock pulse outputted from the clock pulse generating means 3 and a sampling means 4 correcting the data sent from a time division switch into the start-stop data with a set speed and sending the result to a start-stop type MODEM. Thus, the corrected data through the start-stop type MODEM is within the speed deviation, sampling is attained without any error and the data communication with high accuracy is attained.</p> |
