The Snom 300 supports calls made using the handset or the handsfree (speaker) capability. During a call, it is possible to switch between the two modes by pressing the Speaker key for 3 to 4 seconds.
1. The small speaker symbol in the left lower display corner indicates speaker usage.
2. When a headset is connected and the phone auto detects the headset connection and indicates the headset symbol in the right lower display corner after selecting it with the Speaker key, the snom300 will treat the headset as the output device for calls.
3. When a connected headset is the default setting for speaking on the phone, which will, for example, normally be the case in a call center environment, the tick key is used to accept incoming calls.