NEC Univerge DT310 User Manual page 59

Function
Function
Number
Dterm IP Call
82
Log
Conversation
83 Recording
Function (VMSU)
84 Drop Key
85 Directory Dialing
Private Call
86
Refuse
87 Caller ID Refuse
Dial-In Mode
88
Switching
Do-No-Call
89
Setup
Do-No-Call Data
90
Registration
Live Recording
91
Key
92..99 --Not Used--
Additional Data
0=Pause
1=Re-rcording
2=Address
3=Erase
4=Urgent Page
51