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ManualsBrandsYealink Network Technology Co., Ltd ManualsOffice ElectronicsYealink SIP-T21P E2 IP Phone 2-PACK + EXP20 2-PACK LCD Expansion Module
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Configuring Audio Features
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5. Enter the fixed delay time for fixed jitter buffer in the Normal field.
Valid values range from 0 to 300.
6. Click Confirm to accept the change.