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Design and implementation of the operation and maintenance software for a new GSM transcoder - page 22 / 26

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© NOKIA22 paavo.markkola@nokia.com18.10.2005

Implementation, Synchronization

Internal clock unit has been replaced with two external clock units

Common for the whole TCSM3i cabinet

Working and spare units

Cabinet head master is the only TCSM3i unit with the control links to the clock units

Head master is the second TCSM3i in the first cartridge of the cabinet

The responsibilities of the head master include

Supervision – supervises the clock units once every 30 seconds

Configuration – forwards user defined configuration to the clock units

Diagnostics – forwards diagnostics request from the user to the clock units

Alarms – informs BSC of the alarms sent by the clock units

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