Yealink T23GN SIP Phone - Refurbished

About the Yealink T23GN

The T23GN is a cost effective IP business phone featuring an intuitive user interface with secure provisioning and HD audio for excellent voice quality. This phone is ideal for those working in small and large office environments requiring Gigabit Ethernet and access to a variety of enhanced features.

As a cost effective IP solution, it helps users to streamline business processes, delivery a powerful, security and consistent communication experience.

Features

• Yealink HD Voice
• Dual-port Gigabit Ethernet
• PoE support
• 132x64-pixel graphical LCD
• Up to 3 SIP accounts
• Supports Dual-color LEDs
• Headset support
• Wall mountable
• IPv6 support
• Paperless design
• Simple, flexible and secure provisioning options

Audio Features

• HD voice: HD handset, HD speaker
• Wideband codec: G.722
• Narrowband codec: G.711(A/μ), G.723.1, G.729AB,G.726, iLBC
• DTMF: In-band, Out-of-band(RFC 2833) and SIP

Phone Features

• 3 SIP accounts
• Call hold, mute, DND
• One-touch speed dial, hotline
• Call forward, call waiting, call transfer
• Group listening, SMS
• Redial, call return, auto answer
• Local 3-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date time manually or automatically
• Dial plan, off hook hot line
• XML Browser, Action URL/URI
• Integrated Screenshots
• RTCP-XR

Info

• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC
• IP-PBX Features
• Busy Lamp Field (BLF)
• Bridged Line Apperance(BLA)
• Anonymous call, anonymous call rejection
• Hot-desking, emergency call
• Message Waiting Indicator (MWI)
• Voice mail, call park, call pickup
• Intercom, paging, music on hold
• Call completion, call recording

Directory

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

Display and Indicator

• 132x64-pixel graphical LCD with backlight
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status information
• Intuitive user interface with icons and soft keys
• National language selection
• Caller ID with name, number

Interface

• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), class 2
• 1xRJ9 (4P4C) handset port
• 1xRJ9 (4P4C) headset port

Other Physical Features

• Wall mountable
• External universal AC adapter (optional)?
• AC 100~240V input and DC 5V/600mA output
• Power consumption (PSU): 0.72-1.56W
• Power consumption (PoE): 0.96-1.98W
• Dimensions (W*D*H*T) - 209mm*188mm*150mm*41mm

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
• Reset to factory, reboot
• Package tracing export, system log
• Phone lock for personal privacy protection

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261)
• Call server redundancy
• NAT transverse: 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
• Transport Layer Security (TLS)
• HTTPS certificate manager
• AES encryption for configuration file
• Digest authentication using MD5/MD5-sess
• OpenVPN, IEEE802.1X
• IPv6