Yealink SIP-T28P - Manual (Page 69)

Customizing Your Phone
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Directed Pickup
You can use this key feature to answer someone else’s incoming call on the phone.
Dependencies: Type (Key Event)
Key Type (Directed Pickup)
Account ID (the account this feature will be applied to)
Value (the directed pickup code followed by the specific phone
number)
Usage: Press the DSS key on your phone when the specific phone number receives an
incoming call. The call is answered on your phone.
Group Pickup
You can use this key feature to answer incoming calls in a group that is associated with
their own group.
Dependencies: Type (Key Event)
Key Type (Group Pickup)
Account ID (the account this feature will be applied to)
Value (the group pickup feature code)
Usage: Press the DSS key on your phone when a phone number in the group receives
an incoming call. The call is answered on your phone.
DTMF
You can use this key feature to send the specification of arbitrary key sequences via
DTMF.
Dependencies: Type (Key Event)
Key Type (DTMF)
Value (DTMF sequence)
Note
Usage: Press the DSS key during an active call to send the key sequence specified in the
Value field.
Prefix
You can use this key feature to add a specified prefix number before the dialed number.
Dependencies: Type (Key Event)
Key Type (Prefix)
Value (the prefix number)
Usage: Press the DSS key when the phone is idle, then the phone will enter into the
dialing screen and display the prefix number which you specified in the Value field. You
can enter other digits and then dial out.
DTMF sequence only contains "0-9", "*", "#" and "A-D".