Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Parameters
Permitted Values
Default
Phone User Interface:
None
Label Length
Label length allows IP phones to extend the display length of the line key label on the idle
screen. If the label length feature is enabled, more characters will be displayed on the idle LCD
screen. Label length is only applicable to SIP-T54S/T48G/T48S/T46G/T46S/T29G IP phones.
When label length feature is set to Default:
SIP-T46G
SIP-T48G
When label length feature is set to Extended: