- Yealink IP phone
- SIP 2.0 (RFC3261) protocol
- NAT transverse: STUN mode
- IP assignment: DHCP/ static IP
- Auto provision via TFTP/FTP/HTTP/PnP
- QoS: IEEE 802.1p/q tagging (VLAN), layer 3ToS
- In-band, out-of band (RFC2833) and SIP INFO DTMF
- Proxy mode and peer-to-peer SIP link mode
- Wideband codec: G.722
- Narrowband codec: G/A, G.726, G.729AB, G.723.1
- Voice activation detection (VAD)
- Comfort noise generation (CNG)
- Adaptive jitter buffer (AJB), AGC, PLC
- Volume control, Ringtone selection
- Tone scheme, distinctive ringtone
- 1 VoIP account, hotline
- Call hold/waiting/transfer/forward/park/pickup
- Voicemail, MWI, speed dial, dial plan
- 3-way conferencing, DND, mute
- Admin/user configuration mode
- Direct IP call without SIP proxy
- Integrated voice response (IVR) system
- TI TITAN chipset
- 20 keys including 2 programmable keys
- 4 feature keys (transfer/hold/mute/redial)
- 1xdual-color LED, phone label
- 1xRJ45 10/100M ethernet port
- Power over ethernet (PoE): IEEE 802.3af class 1
- Desktop with footstand (detachable), wall-mountable
- Power supply not included
YEASIPT18P

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