Audio
Voice codecs	G.711Mu, G.711a, G.722.2, G.729A, G.729B
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 diagonal	10.9 cm (4.3")
Display resolution	480 x 272 pixels
Touchscreen
Management features
Volume control	Buttons
Number of programmable keys	18
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)
AC adapter included
Performance
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	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	250 mm
Depth	168 mm
Height	163 mm
Weight	1.05 kg
Package width	316 mm
Package depth	255 mm
Package height	95 mm
Package weight	1.49 kg

SfB 445HD IP-Phone PoE GbE and external power supply Black2 Ethernet 10/100/1000 ports, 18 Programmable keys, 480x272 color LCD 10,9 cm ( 4,3 inch ), 376x60 BLF LCD and Power over Ethernet (PoE)