Network Features of Yealink SIP T20P IP Phone:
- SIP 2.0(RFC3261) protocol, NAT traversal: STUN mode.
- IP assignment: DHCP / Static IP / PPPoE.
- Auto-provision: firmware, configuration, ringtone, phonebook
etc.
- QoS: IEEE 802.1p/q tagging (VLAN), Layer 3 ToS.
- In-band DTMF, Out-band DTMF and SIP INFO DTMF.
- Proxy mode and peer-to-peer SIP link mode.
- Standard encryption and authentication(MD5 and
MD5-sess).
Voice Features of Yealink SIP T20P IP Phone:
- High-definition Handset, High-definition Speaker
- Full-duplex hands-free speakerphone compliant with IEEE 1329
- Supports HD Wideband voice codec: G.722
- Narrowband voice codecs: G.711, G.726, G.729AB, G.723.1
- Supports VAD, CNG, AEC, PLC, AJB, AGC
- Support SRTP voice encryption
Physical Features of Yealink SIP T20P IP Phone:
- TI Titan Chipset
- 3-line LCD with an icon line and 2x15 characters lines
- 31 keys including programmable and LED keys
- 1x RJ9 headset port
- 2x RJ45 Ethernet ports
- PoE(IEEE 802.3af)
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