Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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The web screen displays "Default password is in use. Please change!"
Why does the IP phone use DOB format logo file instead of popular BMP, JPG and so on?
Both PoE cable and power adapter is connected to the phone
The power LED indicator has no lights
The IP phone always displays the Yealink logo
The difference among user name, register name, and display name
The difference between RFC 2543 Hold enabled and disabled
The difference between Shared Call Appearance (SCA) and Bridge Lines Appearance (BLA)