£111.99

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  • Amazing Sound - HD voice quality
  • Intuitive Display - Color screen with multi-lingual support
  • UC Ready - Webex Calling Certified and compatible with Microsoft Teams
  • Wired Connectivity - USB headset support

Advanced, Mid-Range Business IP Phone
The 425HD IP phone is an advanced, mid-range business IP phone for office workers and common area users. Designed with simplicity very much in mind, it is equipped with a large multi-lingual 3.5” color display and has 8 programmable multi-function keys.

Design
Product type IP Phone
Handset type Wired handset
Product colour Black
Performance
Dual-Tone Multi-Frequency (DTMF) modes SIP info
Phone features
Lines quantity 4 lines
Answering machine Yes
Call park Yes
Message-waiting indicator (MWI) Yes
Full duplex Yes
Call transfer Yes
Call pick up Yes
Do not disturb function Yes
Redialing Yes
Conference call Yes
Call forwarding Yes
Call hold Yes
Speed dialling Yes
Call waiting Yes
Caller ID Yes
Management features
Volume control Buttons
Number of programmable keys 8
Display
Display LCD
Display diagonal 8.89 cm (3.5")
Display resolution 320 x 480 pixels
Touchscreen No
Audio
Speakerphone Yes
Microphone mute Yes
Packet loss concealment (PLC) Yes
Echo cancellation Yes
Adaptive jitter buffers Yes
Voice activity detection Yes
Voice codecs G.711, G.722, G.729, OPUS
Network
Ethernet LAN Yes
Ethernet LAN data rates 10,100,1000 Mbit/s
Ethernet LAN interface type Gigabit Ethernet
Wi-Fi No
Bluetooth No
VoIP protocols SIP – RFC 3261, SDP – RFC 2327, SIP over TCP/UDP/TLS, DNS_SRV (redundancy), digest authentication, PRACK, early media, SIP subscribe notify, BLF (busy lamp field), presence, MWI (message waiting indication)
Networking standards IEEE 802.3af, IEEE 802.1x, IEEE 802.1p
Supported network protocols IPv4, TCP, UDP, ICMP, ARP, RTP, SRTP, RTCP-XR, 802.1x, static IP/DHCP IP assignment, IEEE 802.1p/Q, QoS/ToS, HTTP/HTTPS/DHCP, NTP, FTP/TFTP, CDP/LLDP VLAN configuration, LDAP
Quality of Service (QoS) support Yes
Security algorithms 802.1x RADIUS, HTTPS, SRTP, TLS
Ports & interfaces
Cable lock slot Yes
DC-in jack Yes
WAN connection type RJ-45
RJ-9 ports quantity 1
Ethernet LAN (RJ-45) ports 2
Certificates
Compliance certificates Federal Communications Commission (FCC), ICES, UL, CE, CB, cTUVus, RCM, KC, CCC, EAC, Industry Canada (IC), VCCI, BSMI
Power
Power over Ethernet (PoE) Yes
AC adapter input voltage 100 - 240 V
Input current 2 A
AC adapter output voltage 12 V
Operational conditions
Storage temperature (T-T) -20 - 70 °C
Operating temperature (T-T) 0 - 40 °C
Weight & dimensions
Width 210.4 mm
Depth 90.9 mm
Height 212.2 mm
Weight 984 g
Package width 244 mm
Package depth 320 mm
Package height 90 mm
Package weight 1.46 kg
Packaging content
Ethernet cable Yes
Manual Yes
AC adapter included Yes
Cables included LAN (RJ-45)
Number of handles included 1 pc(s)