The development trend of railway communication business is towards wireless broadband, control automation, and intelligent operation. Exhibition
Answer(s): A
Railway wireless delays are gradually evolving from GSM-R to LTE-R, so the transmission equipment is no longer Need to be compatible with the original SDH service
Answer(s): B
In the evolution of railway services in the future, the main bandwidth requirements are video services. Service bandwidth requirements will become smaller and smaller
Existing MSTP network on the existing network cannot support 1588V2 accurate clock time synchronization, so There are restrictions on supporting LTE-R services, it is recommended to use MS- OTN to carry LTE services
In the current broadcast network transmission scenario, compared with traditional MTSP, PTN, OTN and other technologiesThe biggest advantage of EPTN is that it takes into account efficiency, safety and cost.
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