Yealink CP969 Administrator's Manual page 798

Administrator's Guide for SIP-T5 Series Smart Media Phones
The following table lists the number of DSS keys you can configure for each phone model:
Phone Model
SIP-T58V/T58A/T56A
CP960
The programable key takes effect only if the IP phone is idle.
Note
The ext key takes effect only if the expansion module is connected to the IP phone.
The following tables list relationship between the values of X in the following parameters and
programable keys for each phone model.
# X ranges from 12 to 14.
programablekey.X.type =
programablekey.X.line =
programablekey.X.value =
programablekey.X.xml_phonebook =
programablekey.X.history_type =
programablekey.X.pickup_value =
Phone Model
X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
776
Line Key Programable Key
27
30
SIP-T58V/T58A/T56A
Hold
Mute
Tran
Ext Key
3 60
0 0