Audio Features
• Optimal HD audio: HD handset, HD speaker
• Hearing aid compatible (HAC) compliant
• Audio codec: G.722, PCMU (G.711μ), PCMA (G.711A), G.729, G.729A, G.729B, G.729AB, G.726, G.723.1, iLBC
DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• Smart Noise Cancellation Technology
• VAD, CNG, AEC, PLC, AJB, AGC
Display and Indicator
• 2.4" 240x320 TFT color screen
• Keypad backlight
• Vibration
• Wallpaper and screensaver
• LED for call and message waiting indication
• Multilingual user interface
• Caller ID with name, number, and avatar
Peripherals
• Support Bluetooth headset
- Basic functions: answer/end/mute call
- Enhanced functions: redial/call hold/volume adjustment two-way synchronization
Phone Features
• 4 VoIP accounts
• Speed dial, redial
• Call hold/call transfer/call waiting/call forward
• Emergency call
• Mute, DND
• Auto answer
• Hotline
• Recall
• Local 5-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date and time manually or automatically
• Dial Plan, XML Browser, Action URL/URI
• RTCP-XR (RFC3611), VQ-RTCPXR(RFC6035)
• Customizable softkey
IP-PBX Features
• Anonymous call, anonymous call rejection
• Intercom
• Multicast paging
• Call completion
• Message Waiting Indicator (MWI)
• Call park, call pickup
• Call recording
• Voice mail
Directory
• Local phonebook up to 1000 entries
• Blocklist
• XML/LDAP remote phonebook
• Google contacts
• Smart dialing
• Phonebook search/import/export
• Call history: All calls/dialed/received/missed/forwarded
Feature Keys
• 2 soft keys
• 6 function keys: dial, hang up, handsfree, voice message, mute, call transfer
• Navigation key and OK key
Interface
• 1 x 3.5 mm headset jack
• 1 x Type-C port
Network
• Built-in dual-band Wi-Fi:
- Network standard: 2.4G&5G, IEEE802.11a/b/g/n/ac/ax
- Frequency range: 2.4 GHz/ 5.0 GHz
- Roaming: IEEE802.11 k/r/v
• Built-in Bluetooth 5.0:
- Connecting to Bluetooth Headset
• IPv4/IPv6
• SIP v1 (RFC2543), v2 (RFC3261)
• Call server redundancy supported
• NAT traversal: STUN mode
• SIP link mode: Proxy mode and peer-to-peer
• IP Assignment: static/DHCP
• HTTP/HTTPS web server
• Time and date synchronization using SNTP
• UDP/TCP/DNS-SRV (RFC 3263)
• QoS: Layer 3 ToS DSCP, 802.11e/WMM
Security
• SRTP for voice
• TLS1.3 support
• HTTPS certificate manager
• AES encryption for configuration file (AES256)
• Digest authentication using MD5/MD5-sess
• OpenVPN, IEEE802.1X
• WPA, WPA2, WPA3
• Secure boot
• GARP (Generic Attribute Registration Protocol)
Power
• Power adapter: AC 100~240V input and DC 5V/1.2A output
Environmental Factors
• Operating humidity: 10%-95%
• Operating temperature: 0 to 40°C (+32 to 104°F)
• Storage temperature: -30 to 70℃
Management
• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for mass deployment
• Auto-provision with PnP
• TR-069
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log
• Supports Yealink Device Management Platform (YMDP/YMCS)
Package Features
• Handset size: 151.0 x 49.5 x 21 mm
• Handset weight: 126 g
• Giftbox size: 181 × 104 × 90 mm
• Carton meas: 464 × 434 × 198 mm
• Qty/CTN: 20 PCS
• G.W/CTN: 8.03 kg
• N.W/CTN: 7.36 kg
• Package contents
- Yealink AX83H Phones
- Charger Cradle
- Rechargeable Battery
- Belt Clip
- Quick Start Guide
- Power Adapter