Features
Integrated voicemail
Yes
Handset type
Wired handset
Firmware upgradeable
Yes
Device lock
Yes
Ethernet cable
Yes
Product colour
Grey
Hearing aid compatibility
Yes
Technical details
Integrated voicemail
Yes
Handset type
Wired handset
Firmware upgradeable
Yes
Device lock
Yes
Speakerphone
Yes
Ethernet cable
Yes
Hearing aid compatibility
Yes
Security
Security algorithms
HTTPS-MD5-SIPS-SRTP
Design
Product type
IP Phone
Handset type
Wired handset
Device lock
Yes
Product colour
Grey
Performance
Hearing aid compatibility
Yes
Management features
Integrated voicemail
Yes
Firmware upgradeable
Yes
Display
Touchscreen type
Capacitive
Touchscreen
Yes
Display resolution
480 x 272 pixels
Display diagonal
10.9 cm (4.3")
Camera
Front camera
No
Audio
Comfort noise generation (CNG)
Yes
Automatic gain control
Yes
Voice activity detection
Yes
Speakerphone
Yes
Noise reduction
Yes
Microphone mute
Yes
Adaptive jitter buffers
Yes
Packet loss concealment (PLC)
Yes
Network
Ethernet LAN interface type
Gigabit Ethernet
Wi-Fi
No
Supported network protocols
IPv4/IPv6
Security algorithms
HTTPS-MD5-SIPS-SRTP
Quality of Service (QoS) support
Yes
Ethernet LAN
Yes
Bluetooth
No
Colour
Product colour
Grey
Microphone
Microphone mute
Yes
Ports & interfaces
USB 2.0 ports quantity
1
RJ-9 ports quantity
2
Ethernet LAN (RJ-45) ports
2
DC-in jack
Yes
Power
AC adapter output current
1.2 A
Power over Ethernet (PoE)
Yes
Power consumption (typical)
2.6 W
AC adapter output voltage
5 V
AC adapter input voltage
100 - 240 V
Operational conditions
Operating temperature (T-T)
0 - 40 °C
Operating relative humidity (H-H)
10 - 95%
Weight & dimensions
Width
223 mm
Depth
206 mm
Height
127 mm
T55A TEAMS EDITION
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