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· - Provides physical ports between the BTS and the BSC for interaction.

· - Provides the ports for communication with the radio filter.

· -Provides the USB port for downloading the BTS software

· -Provides operation management channels.

· · -Provides centralized management on the entire BTS system, such as OM and signaling processing

· -Provides the reference clock for the entire system.

- Provides for management of Microwave, Optical Fiber and other communication signalling process.

- Details of Function of BBU is here telecombase.blogspot.com/2015/11/bbu-base-band-unit-in-telecom.html

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Q: What is the function of bbu in huwaei bts?
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