Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
1048
T54S/
T52S
T48S
T48G
T46S
T46G
T42S/
T41S
T42G/
T41P
T40P
/G
T29G
T27G
T27P
T23P/T23
G/T21(P)
E2
T19(P)
E2
CP860
CP920
Description
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Line key type is Voice Mail
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Line key type is Direct Pickup
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Line key type is Group Pickup
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Line key type is Call Park (park
successfully/call park idle state)
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Line key type is Call Park (call park
ringing state)
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Park failed
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Line key type is Retrieve Park
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Line key type is Intercom (intercom
idle state)
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Line key type is Intercom (intercom
ringing state)
Talking
Talking
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Line key type is Intercom (intercom
talking state)
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Line key type is Intercom (intercom
callout state)