Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
1028
9-Direct Pickup
11-DTMF
17-URL
18-Group Listening
20-Private Hold
22-XML Group
24-Multicast Paging (Paging)
25-Record
27-XML Browser
34-Hot Desking
35-URL Record
38-LDAP
39-BLF List
40-Prefix
41-Zero Touch
42-ACD
45-Local Group
50-Phone Lock
61-Directory
66-Paging List
73-Custom Key
Format
Integer
Default Value
For the programable key and ext key, the default
value is not applicable.
For the line key, when X=1, the default value is 1.
When X=2, the default value is 2.
When X=3 the default value is 3
…
When X=16 the default value is 16.
Range
Permitted Values:
1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
1 to 12 (for SIP-T52S/T42G/T42S)
1 to 6 (for SIP-T41P/T41S/T27P/T27G)
1 to 3 (for SIP-T40P/T40G/T23P/T23G)
1 to 2 (for SIP-T21(P) E2)
1-Line 1
2-Line 2