The basics are, 4 SIP lines, 2 layer graphical display, Speakerphone, Power Over Ethernet or direct power, 10/100 Mbps switch, Headset connection. The following codes can be supported by the Snom 300: G.711, G.729A, G.723.1, G.722, G.726, GSM 6.10 (full rate). The Snom 300 comes with an excellent speakerphone and has 6 programmable function keys. Additionally the phone supports the security features of SIPS/SRTP and TLS.