Audio
Voice codecs	G.711Mu, G.711a, G.722, G.729A, G.729B, OPUS
Speakerphone
Microphone mute
Echo cancellation
Voice activity detection
Adaptive jitter buffers
Packet loss concealment (PLC)
Certificates
Compliance certificates	CE, Federal Communications Commission (FCC)
Sustainability compliance
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
Logistics data
Master (outer) case gross weight	14.5 kg
Master (outer) case length	467 mm
Master (outer) case width	579 mm
Master (outer) case height	291 mm
Management features
Volume control	Buttons
Number of programmable keys	8
Integrated voicemail
Firmware upgradeable
Network
Ethernet LAN interface type	Gigabit Ethernet
Ethernet LAN data rates	10,100,1000 Mbit/s
Supported network protocols	IPv4, TCP, UDP, ICMP, ARP, RTP, SRTP, RTCP-XR, 802.1x, IP/DHCP IP, IEEE 802.1p/Q, QoS/ToS, HTTP/HTTPS/DHCP, NTP, FTP/TFTP, CDP/LLDP VLAN, LDAP
Security algorithms	HTTPS, SRTP, SSL/TLS
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, 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)
Cables included	LAN (RJ-45)
Manual
Performance
Operating system installed	Android
Operating system version	9
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Phone features
Lines quantity	8 lines
Answering machine
Call waiting
Speed dialling
Call hold
Call forwarding
Conference call
Redialing
Do not disturb function
Caller ID
Call park
Call pick up
Full duplex
Call transfer
Message-waiting indicator (MWI)
Ports & interfaces
USB 2.0 ports quantity	2
Ethernet LAN (RJ-45) ports	2
RJ-9 ports quantity	1
WAN connection type	RJ-45
DC-in jack
Cable lock slot
Power
AC adapter input voltage	100 - 240 V
AC adapter output voltage	12 V
AC adapter output current	2 A
Power over Ethernet (PoE)
Weight & dimensions
Width	236 mm
Depth	200 mm
Height	165.9 mm
Weight	988 g
Height (min)	17 cm
Height (max)	19.5 cm
Package width	280 mm
Package depth	245 mm
Package height	110 mm
Package weight	1.55 kg

The AudioCodes native Microsoft Teams C455HD IP phone is a feature-rich, top-of-the-range phone equipped with the latest technology to ensure a seamless Microsoft Teams experience at all times.
The C455HD features a large, intuitive 12,7 cm ( 5 inch ) color touchscreen for exceptional ease of use, while stunning HD sound quality ensures every conversation is productive - or even more so. This device is also available as the C455HD-DBW along with a 12,7 cm ( 5 inch ) color touch expansion module that brings real life to your Microsoft Teams meetings and features dual-band Wi-Fi or Bluetooth for wireless headset use.
AudioCodes IP phones can be offered as part of our managed IP phone solutions, which treat the IP phone as an IT-managed entity and provide unique and complete lifecycle management of end-user desktop devices. Features Native support for Microsoft Teams More graphical Color TFT screen (12,7 cm ( 5 inch ) 1280 x 720) with multilingual support A vertical color touchscreen (12,7 cm ( 5 inch ) 480 x 854) as an expansion module to increase productivity, which can accommodate up to 50 contacts with speed dialing at the click of a mouse (C455HD DBW) Touchscreen user interface with up to 8 programmable buttons 8 telephone lines, 8 simultaneous calls per line GbE support Firmware upgrade via USB stick High voice quality Full-duplex speakerphone Robust security mechanisms PoE or external power Out-of-the-box support for global redirection servers Multilingual user interface Central management with the AudioCodes One Voice Operations Center (OVOC) Device Manager