[PDF] Yealink_SIP-T21 E2 & T21P ... - Yealink Support
by turning the equipment off and on, the user is encouraged to try to correct ... and electronic equipment should understand the meaning of the crossed-out ... Shows information about calls, messages, soft keys, ... Provides the digits, letters and special characters in ... how to adjust the hookswitch tab, refer to Yealink Wall.
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