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Configuring the Clock Mode
Context
A POS interface supports the following clock modes:
- master: uses the internal clock signal.
- slave: uses the line clock signal.
- system: uses the MPU clock signal.
When the POS interfaces of the router and a remote device are directly connected, set the clock mode of one end to master and that of the peer end to slave. When the POS interface of a device is connected to the SONET or SDH network, set the clock mode of the POS interface to slave because the SONET or SDH network clock has a higher accuracy than the POS interface.