# Phone Model M3901

When you connect a Nortel Meridian M3901 phone to a 3300 CITELlink Gateway and program it as a CITELlink Type1 device, the phone supports the following keys:

Button Label | Function
1 | Function
2 | Cancel
3 | Prime Line
4 | Hold
5 | Message Indicator Light

The function key is used in conjunction with the dial pad to access additional functionality:

Function + Dial Pad Number | Function
1 | Feature Key 2
2 | Feature Key 3
3 | Feature Key 4
4 | Transfer/Conference
5 | Message