Yealink SIP-T21 E2

Appendix
1027
(not applicable to SIP-T19(P) E2/CP860/CP920 IP
phones)
For line keys:
X ranges from 1 to 29 (for SIP-T48G/S)
X ranges from 1 to 27 (for SIP-
T54S/T46G/T46S/T29G)
X ranges from 1 to 15 (for SIP-
T42G/T42S/T41P/T41S)
X ranges from 1 to 21 (for SIP-T52S/T27P/T27G)
X ranges from 1 to 3 (for SIP-
T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
For programable keys:
X=1-10, 12-14 (for SIP-
T54S/T48G/T48S/T46G/T46S)
X=1-10, 13 (for SIP-
T52S/T42G/T42S/T41P/T41S/T40P/T40G)
X=1-14 (for SIP-T29G/T27P/T27G)
X=1-10, 14 (for SIP-T23P/T23G/T21(P) E2)
For ext keys (only applicable to SIP-
T54S/T52S/T48G/T48S/T46G/T46S/T29G/T27P/T27G
IP phones):
For SIP-T54S/T52S:
X ranges from 1 to 3, Y ranges from 1 to 60.
For SIP-T48G/T48S/T46G/T46S:
X ranges from 1 to 6, Y ranges from 1 to 40.
For SIP-T29G/T27P/T27G:
X ranges from 1 to 6, Y ranges from 1 to 20, 22 to
40 (Ext key 21 cannot be configured).
When assigning the following features, you do not
need to configure this parameter:
1-Conference
2-Forward
3-Transfer
4-Hold
5-DND
7-ReCall
8-SMS