Yealink T38G

Calling Line ID Delivery Blocking per Call
*67
Calling Line ID Delivery per Call
*65
Call Return
*69
Call Waiting Persistent Activation
*43
Call Waiting Persistent Deactivation
#43
Cancel Call Waiting
*70
Clear Voice Message Waiting Indicator
*99
Customer Originated Trace
*57
Directed Call Pickup
*97
Directed Call Pickup with Barge-in
*33
Direct Voice Mail Transfer
*55
Last Number Redial
*66
Per Call Account Code
*71
Push to Talk
*50
Speed Dial 100
*75
Speed Dial 8
*74