Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
1050
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
/
/
/
/
/
/
/
/
/
Line key type is SMS
/
/
/
/
/
/
/
/
/
Line key type is Record/URL Record
/
/
/
/
/
/
/
/
/
Line key type is Record/URL Record
(recording starts successfully)
/
/
/
/
/
/
/
/
/
Line key type is Multicast
Paging/Group Listening/Paging List
/
/
/
/
/
/
/
/
/
Line key type is Hot Desking
/
/
/
/
/
/
/
/
/
Line key type is ACD
/
/
/
/
/
/
/
/
/
Line key type is Zero Touch
/
/
/
/
/
/
/
/
/
Line key type is URL
/
/
/
/
/
/
/
/
/
Line key type is Phone Lock
/
/
/
/
/
/
/
/
/
Line key type is Directory
/
/
/
/
/
/
/
/
/
Line key type is Custom Key