# Phone Model M3310

When you connect a Nortel Meridian M3310 phone to a 3300 CITELlink Gateway and program it as a CITELlink Type1 device, the phone supports the following keys:

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