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)
Camera
Front camera
Certificates
Certification	FCC 15 B, ICES-003 B, EN55032 B, EN61000-3-2, EN61000-3-3, UL-60950-1, EN60950-1, IEC-60950-1 (CB), CE, cTUVus RCM, KC, Anatel, CCC, ICASA, EAC, IC, ACTA, VCCI, BSMI
Skype
Design
Product type	IP Phone
Handset type	Wired handset
Product colour	Black
Display
Display	LCD
Display resolution	132 x 64 pixels
Touchscreen
Backlight display
Management features
Volume control	Buttons
Number of programmable keys	4
Integrated voicemail
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)
Performance
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Phone features
Lines quantity	2 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	1
Ethernet LAN (RJ-45) ports	2
RJ-9 ports quantity	2
DC-in jack
Power
AC adapter input voltage	100 - 240 V
Power over Ethernet (PoE)
Weight & dimensions
Width	191 mm
Depth	180 mm
Height	153 mm
Weight	680 g
Package width	210 mm
Package depth	200 mm
Package height	100 mm
Package weight	900 g

The Audiocodes UC405HDEG is an IP telephone of the 405HD series, designed for use in corporate environments with VoIP telephony. It features a wired handset and is finished in black. The device supports SIP-Info modes for Dual-Tone Multifrequency (DTMF) and offers two call lines, making it suitable for small to medium workstations. It is designed for integration into Unified Communications systems and can be used in corporate IP telephony infrastructures as well as in IP contact centers.

Applications
This telephone is designed for use in office environments where reliable and functional communication over IP networks is required. It is suitable for standard telephony applications, including call answering, conferencing, call forwarding, and redial. Support for Quality of Service (QoS) and network protocols such as IPv4, TCP, UDP, RTP, SRTP, and 802.1x makes it suitable for networks with high requirements for communication quality and security.

Functions and Equipment in Detail
The device features a graphical LCD display with a resolution of 132 x 64 pixels, equipped with backlighting. The display allows for the presentation of caller information, menus, and status messages. There are four programmable keys available, which can be configured for speed dialing, call forwarding, or other functions. Volume can be adjusted using dedicated keys. Integrated functions include voicemail, call waiting, call hold, call forwarding, telephone conferencing, redial, DND (Do Not Disturb), caller identification, call park, call answer, call transfer, MWI (message waiting indicator), and full-duplex speakerphone. The microphone mute function allows muting the microphone during a call.

Technology Explained Simply
The telephone supports multiple voice codecs, including G.711Mu, G.711a, G.722, G.729A, G.729B, and OPUS, enabling flexible adaptation to various network operating conditions. Echo cancellation, voice activity detection, adaptive jitter buffering, and packet loss concealment (PLC) ensure stable and clear voice transmission, even under irregular network conditions. Power is supplied via Power over Ethernet (PoE), allowing the device to be powered through the network cable. Alternatively, it can be operated using an external power supply unit with 100–240 V AC. The network connection is via Gigabit Ethernet with data transfer rates of 10, 100, and 1000 Mbit/s. It includes two RJ-45 Ethernet ports and two RJ9 ports for the handset. A USB 2.0 port is also integrated.

Compatibility and Accessories
The telephone is designed for use with SIP-based VoIP systems. It supports protocols including IPv4, TCP, UDP, ICMP, ARP, RTP, SRTP, RTCP-XR, 802.1x, IP/DHCP, IEEE 802.1p/Q, QoS/ToS, HTTP/HTTPS/DHCP, NTP, FTP/TFTP, CDP/LLDP VLAN, and LDAP. Security algorithms HTTPS, SRTP, and SSL/TLS are implemented. Available accessories include power supply units with 12VDC/1A and wall-mounting options, suitable for external power supply.

Mounting and Installation
The device can be mounted on a desk or on a wall. The installation guide in the user manual describes the steps for desktop and wall mounting, including routing of the handset cable. Installation is performed via network connection, with the telephone automatically configurable via DHCP. The operating temperature range is 0 to 40 °C, and the storage temperature range is -20 to 70 °C.

Operational Advantages
The Audiocodes UC405HDEG offers a comprehensive feature set for daily office needs. The integration of voicemail, conferencing functions, and programmable keys reduces the need for additional devices. Support for QoS and security protocols ensures reliable and secure communication. The 3-year software support provided by Audiocodes-qualified partners is part of the offer, simplifying maintenance and updates of the device. The device includes a handset and an Ethernet cable (RJ-45) in the delivery scope.

Certification
The device meets certification requirements according to FCC 15 B, ICES-003 B, EN55032 B, EN61000-3-2, EN61000-3-3, UL-60950-1, EN60950-1, IEC-60950-1 (CB), CE, cTUVus, RCM, KC, Anatel, CCC, ICASA, EAC, IC, ACTA, VCCI, and BSMI. It is approved for use in various global markets.