Which of the following 1 is optimized for SDH networks? (multiple choices)

Not to do the number of the center L1 integration service interface is

Customer tenders S content includes (multiple choices)

Huawei's acquisition and certification system is based on years of experience in information and communication technology, and the development of the development of the ii. The tomb of the ICT households allows the individual to take the development cycle of the chain, with the hierarchical job-oriented technical certification as a guide. , Huawei's "cloud one end of one" erosion technology, the introduction of IP, IT, CT and ICT shafting technology certification system; is the only ICT full technical field certification system.

77. For the 7-guarantee word pledge and sufficient superiors to press the time. What is the maximum number of classes in the training center?