CP920

• Optimal HD audio
• Yealink Noise Proof Technology
• Background noise suppression
• 20-foot (6-meter) microphone pickup range
• Apply to small to medium conference room
• Built-in 3-microphone array, 360-degree voice pickup
• 56mm diameter and 5w speaker
• Full-duplex speakerphone with AEC
• Echo cancellation tail length is up to 320ms
• Codecs:
  G722, G722.1C, G726, G729, G723, iLBC, Opus, PCMA, PCMU
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• VAD, CNG, PLC, AJB, AGC

Phone Features

• 1 VoIP account
• Call hold, mute, DND, call recording, hotline
• 5-way conference call
• Flash
• Redial, call waiting, emergency call
• Call forward, call transfer, call return, dial plan
• Ring tone selection/import/delete
• Set date time manually or automatically
• Volume adjustment
• Pairing via Bluetooth

Directory

• Local phonebook up to 1000 entries
• XML/LDAP remote phonebook
• Intelligent search method
• Phonebook search/import/export
• Call history: dialed/received/missed/forwarded
• Black list

IP-PBX Features

• Intercom
• Multicast paging
• Anonymous call
• Anonymous call rejection
• Voice mail
• Distinctive ringtone
• Call pickup

Display

• 3.1″ 248×120-pixel graphical LCD with backlight
• 25 total keys:
  4 soft keys, off-hook key, on-hook key,
  12-key numerical keypad, Bluetooth, mute,
  volume keys, 2 navigation keys, OK key
• Phone lock
• Multilingual user interface
• Caller ID with name and number
  Interface
• 1 x RJ45 10/100M Ethernet port
• Built-in Wi-Fi (2.4GHz，802.11 b/g/n)
• Built-in Bluetooth 4.0
• Power over Ethernet (IEEE 802.3af ), class 3
• 1 x USB 2.0 port
• 1 x Security slot

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261)
• SIP server redundancy supported
• IPv4/IPv6
• NAT traversal: STUN mode
• Proxy mode and peer-to-peer SIP link mode
• IP assignment: static/DHCP
• HTTP/HTTPS web server
• Time and date synchronization using SNTP
• UDP/TCP/DNS-SRV (RFC 3263)
• QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS, DSCP
• SRTP for voice encryption
• Transport Layer Security (TLS)
• HTTPS certificate manager
• AES encryption for configuration file
• Digest authentication using MD5/MD5-sess
• OpenVPN, IEEE802.1X

Management

• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for
  mass deploy
• Auto-provision with PnP
• Zero-sp-touch, TR-069, SNMP
• Reset to factory, reboot
• Package tracing export, system log

Other physical features

• External Yealink power adapter:
  AC 100~240V input and DC 12V/1A output
• Power consumption (PoE): 3.9w-7.6w
• Dimension (W*D*H): 307.8mm*298.5mm*66.9mm
• Operating humidity: 10~90%
• Storage temperature: -10~40°C (+14~104°F)