# Phone Model M3902

When you connect a Nortel Meridian M3902 phone to a 3300 CITELlink Gateway and program it as a CITELlink Type1 device, the phone supports the following keys:

Button Label | Function
1 | Feature Key 4, Feature Key 3, Feature Key 2
2 | Superkey
3 | Previous
4 | Handsfree
5 | Mute
6 | Cancel
7 | Hold
8 | Transfer/Conference
9 | Message
10 | Program
11 | Down Arrow
12 | Next
13 | Prime Line
14 | Message Indicator Light