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Configuring the Frame Format for a POS Interface
Context
SDH and SONET are different standards defined by different organizations, but their content and functions are similar. SDH is mainly used in Europe and China and SONET is mainly used in North America and Japan. Different device manufacturers provide different default configurations for them.
Different synchronous transfer modes (SDH or SONET) are used in different regions. You need to configure the POS interface frame format based on the standard used locally.