The Yealink SIP-T22P Enterprise HD IP Phone features:
• 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
• Phone features:
      — 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), 
      — 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 features:
      — Dial plan, dial-now
      — SMS, Voicemail, MWI
      — Intercom
      — Call park, call pickup
      — Distinctive ringtone
• Codecs and Voice features:
      — 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
• Network features:
      — 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
      — HTTP/HTTPS server
      — DNS client
      — NAT/DHCP server
• Management features:
      — FTP/TFTP/HTTP/PnP auto-provision
      — Configuration: browser/phone/auto-provision
      — Direct IP call without SIP proxy
      — Dial number via SIP server
      — Dial URL via SIP server
• Security features:
      — 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
• Power options:
     — Power over Ethernet (IEEE 802.3af)
     — Power adapter: AC 100~240V input and DC 5V/1.2A output (sold separately)
• Stand with 2 adjustable angles
• Wall mountable
• Color: Black
• Condition: New
• One Year Warranty