Yealink SIP-T48S User Manual page 121

DTMF
You can use this key feature to send the specification of arbitrary key sequences via DTMF.
Dependencies:
Usage: Tap the DTMF key during an active call to send the key sequence specified in the Value
field.
Note
DTMF sequence can only contain "0-9", "*", "#" and "A-E".
Prefix
You can use this key feature to add a specified prefix number before the dialing number.
Dependencies:
Usage: Tap the Prefix key when the phone is idle, the phone will then enter the dialing screen
and display the prefix number that you specified in the Value field. You can enter the
remaining digits and then dial out.
Local Group
You can use this key feature to quickly access a contact group in the local directory. For more
information, refer to
Dependencies:
Usage: Tap the Local Group key to access the contact group specified in the Local Group field.
XML Group
You can use this key feature to quickly access a remote group in your remote phone book. You
should configure a remote phone book in advance. For more information, refer to
Phone Book on page 89.
Dependencies:
Type (Key Event)
Key Type (DTMF)
Label (key label displayed on the touch screen)
Value (DTMF sequence)
Type (Key Event)
Key Type (Prefix)
Label (key label displayed on the touch screen)
Value (the prefix number)
Local Directory on page 69.
Type (Key Event)
Key Type (Local Group)
Local Group (the contact group name you want to access)
Label (key label displayed on the touch screen)
Type (Key Event)
Key Type (XML Group)
XML Group (the remote group name you want to access if the remote phone
book is configured)
Label (key label displayed on the touch screen)
Customizing Your Phone
Remote
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