请你把中文翻译成为英文
此外，还必须进行网络端到端的鉴定，这时会执行所有相关的 SONET/SDH 测试，包括误码率等测试。
Finally, the network end-to-end level qualification must be done; this is where all the relevant SONET/SDH tests are performed, including tests such as bit error rate (BER).