Yealink SIP-T2XP Administrator's Manual page 417

DND

Call Return

SMS (not applicable to SIP-T20P IP phones)

Directed Pickup

Call Park

DTMF

Voice Mail

Speed Dial

Intercom

Line

BLF

Group Listening

XML Group (not applicable to SIP-T20P IP

phones)
Group Pickup

Multicast Paging

Record

XML Browser

Hot Desking

URL Record

LDAP (not applicable to SIP-T20P IP phones)

Prefix

Zero Touch

ACD

Local Group

Custom Button

Keypad Lock

Directory

For programable keys:
Valid types are:
N/A

Forward

DND

Call Return

SMS (not applicable to SIP-T20P IP phones)

Directed Pickup

Spead Dial

Appendix
401