Yealink SIP-T22P Yealink Professional IP Phone W/POE YEA-SIP-T22P

TI TITAN chipset and TI voice engine.
132x64 graphic LCD.
3 VoIP accounts, Broadsoft /Avaya/Asterisk validated.
HD Voice: HD Codec, HD Handset, HD Speaker.
32 keys including 4 soft keys.
SMS, Voicemail, Intercom.
Localized language, XML phonebook.
FTP/TFTP/HTTP, PnP Auto-provision.
SRTP/HTTPS/TLS, VLAN, QoS.
PoE, Headset, Wall-Mounted.
3 VoIP accounts, hotline, emergency call.
Call waiting, call transfer, call forward.
Hold, mute, flash, auto-answer, redial.
3-way conference, DND, speed dial.
Phonebook (each record with 3 phone numbers, 300 entries), blacklist.
XML Phonebook search/import/export.
Lists of missed, received, dialed, and forwarded calls (100 entries in all).
Volume adjustment, ring tone selection.
Tone scheme, System log.
Multi-language (more than 20).
IP PBX System Integration.
Dial plan, dial-now.
SMS, Voicemail, MWI.
Intercom.
Call park, call pickup.
Distinctive ringtone.
Wideband codec: G.722.
Narrowband codec: G.711, G.723.1, G.726, G.729AB.
VAD, CNG, AEC, PLC, AJB, AGC.
Full-duplex speakerphone with AEC.
SIP v1 (RFC2543), v2 (RFC3261).
NAT Traversal: STUN mode.
DTMF: In-Band, RFC2833, SIP Info.
Proxy mode and peer-to-peer SIP link mode.
IP Assignment: Static/DHCP/PPPoE.
TFTP/DHCP/PPPoE client.
Telnet/HTTP/HTTPS server.
DNS client.
NAT/DHCP server.
FTP/TFTP/HTTP/PnP auto-provision.
Configuration: browser/phone/auto-provision.
Direct IP call without SIP proxy.
Dial number via a SIP server.
Dial URL via a SIP server.
HTTPS (server/client).
SRTP (RFC3711).
Transport Layer Security (TLS).
VLAN (802.1 PQ), QoS.
Digest authentication using MD5/MD5-sess.
Secure configuration file via AES encryption.
Phone lock for personal privacy protection.
Admin/user configuration mode.
TI TITAN chipset.
132x64 graphic LCD.
32 keys including 4 soft keys.
5 LEDs: 1xpower, 3xline, 1xmessage.
1xRJ9 handset port.
1xRJ9 headset port.
2xRJ45 10/100M Ethernet ports.
Wall-mounted.
Power adapter: AC 100~240V input and DC 5V/1.2A Output.
Power over Ethernet (IEEE 802.3af).