Yealink SIP-T2xP Auto Provisioning Manual page 129

Parameter
memorykey.X.type =
(X ranges from 1 to 10)
(only applicable to SIP-T28P and SIP-T26P IP
phones)
Permitted Values
The default value is blank.
It configures the desired feature for memory
key X.
Valid values are:
0-N/A
1-Conference
2-Forward
3-Transfer
4-Hold
5-DND
Integer
7-Call Return
8-SMS
9-Directed Pickup
10-Call Park
11-DTMF
12-Voice Mail
13-Speed Dial
14-Intercom
15-Line
Descriptions
DSSKey->Memory Key->Memory
KeyX->Type
Appendix
Web Setting Path
119