Audio
Voice codecs	G.711, G.722, G.729, Silk
Speakerphone
Microphone mute
Echo cancellation
Voice activity detection
Adaptive jitter buffers
Comfort noise generation (CNG)
Packet loss concealment (PLC)
Certificates
Certified for Microsoft Teams
Design
Product type	IP Phone
Handset type	Wired handset
Product colour	Black
Wall mountable
Display
Display	TFT
Display diagonal	12.7 cm (5")
Display resolution	1280 x 720 pixels
Touchscreen
Management features
Volume control	Buttons
Number of programmable keys	1
Integrated voicemail
Network
Ethernet LAN interface type	Gigabit Ethernet
Ethernet LAN data rates	10,100,1000 Mbit/s
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
Supported network protocols	UDP/TCP, NTP, DNS/SRV
Security algorithms	HTTPS, SRTP, TLS
Networking standards	IEEE 802.3af
Ethernet LAN
Wi-Fi
Bluetooth
Quality of Service (QoS) support
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-20 - 70 °C
Packaging content
Number of handles included	1 pc(s)
Mounting kit
Ethernet cable
Handset
Manual
Headset included
Performance
Operating system installed	Android
Operating system version	13
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Phone features
Answering machine
Speed dialling
Call hold
Redialing
Caller ID
Full duplex
Call transfer
Message-waiting indicator (MWI)
Ports & interfaces
Headset connectivity	USB
Ethernet LAN (RJ-45) ports	2
WAN connection type	RJ-45
DC-in jack
Cable lock slot
Power
Power over Ethernet (PoE)
Weight & dimensions
Width	225.9 mm
Depth	210.3 mm
Height	92.6 mm
Weight	1.11 kg
Package width	323 mm
Package depth	238 mm
Package height	86 mm
Package weight	1.5 kg

Teams C456HD IP-Phone PoE GbE black with integrated BT and Dual Band Wi-Fi 62 Ethernet 10/100/1000 ports, 1280x720 5\'\' Color Touch LCD and Power over Ethernet (PoE)optional support for Gen2 Expansion unit