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M 3900 description Page 167 of 504
Telephones and Consoles Description, Installation, and Operation
Key 17 Call Transfer (default)
Key 18 6 Party Conference (default) or 3 Party Conference
Key 19 Call Forward (default)
Key 20 Ring Again (default)
Key 21 Call Park (default)
Key 22 Ringing Number Pickup (default)
Key 23 Configure as one of the following:
• Speed Call
• System Speed Call
• Speed Call Controller
• System Speed Call Controller
Note: The above services are not a default feature for this key. These features
can be used on any of the programmable keys.
Key 24 Privacy Release (default)
Key 25 Charge Account (default)
Key 26 Calling Party Number (default)
Key 27 Callers List (default)
Key 28 Redial List (default)
Keys 29-31 NUL
Table 27
M3904 key description (Part 2 of 2)
Key Description