一种ISDN用户板的U口测试方法

The method for testing U port of ISDN user board includes such steps as initializing testing environment and ISDN user board sending command for testing U port of ISDN user board to be tested from testing environment sending command for activating M and appending 2B+D information from each U port of board to be tested receiving the information and separating information of M, B, D channels of U port by testing environment testing environment parses M signal determining whether M signal is a activated signal determining whether the tested board receives M response signal and B, D signal the advantages are high efficiency, and low cost.