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KX-NT556 Executive IP Telephone with 6-Line Display

KX-NT556

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KX-NT556 white
KX-NT556 black
KX-NT556 / KX-NT556-B

Product details

The KX-NT556 IP telephone delivers exceptional professional performance. It takes you to a new dimension in audio experience, thanks to excellent HD quality audio, combined with easy access to powerful supportive features and applications. The sleek, ultra-modern design, available in both black and white colour options, works well with any office decor.

Key features

  • 6-line backlit LCD display
  • 12x3 self-labelling, flexible CO buttons
  • 2 gigabit Ethernet port (1000 Base-T)
  • Power-over-Ethernet (PoE)
  • Eco mode
View Product Support
KX-NT556 white
KX-NT556 black
KX-NT556 / KX-NT556-B

LCD (Main) Type Graphic
LCD (Main) Dots (W x H) 242 x 109
LCD (Main) Line 6
LCD (Main) Character 24/line
LCD (Main) Backlight Yes (On/Automatic/Off)
LCD Main Contrast 4 levels
LCD (Self-Labelling) Type Character
LCD (Self-Labelling) Dots (W x H) 8 dot (W) x 16 dot (H)/Character
LCD (Self-Labelling) Line 12
LCD (Self-Labelling) Character 12/line
LCD (Self-Labelling) Backlight Yes (Synchronized Main LCD)
LCD Self-Labelling Contrast 4 levels
Ethernet Port 2-Gigabit Ethernet port
Handset Wideband compliant Hearing aid compatibility (HAC)
Headset port Yes (2.5 mm audio jack)
Electronics Hook Switch (EHS) Yes*1 (3.5 mm audio jack)
Speakerphone Yes (Full Duplex) IEEE 1329 compatible
Microphone Yes
Option Unit connection Yes (Add-on 48 key module)
Bluetooth (for headset) No
PoE Yes (Class 3)
AC Adapter Yes (Option)
Wall mount kit Yes (Option)
Dimension (W x D x H mm) HIGH: 267 x 170 x 180 LOW: 267 x 187 x 155
FF Keys 36 (12 x 3 pages)
Page Key Yes
Soft Keys 4
0-9, *, # Keys Yes
REDIAL Key Yes
FLASH/RECALL Key Yes
HOLD Key Yes
SP-PHONE Key Yes
AUTO ANSWER/MUTE Key Yes
AUTO DIAL/STORE Key Yes
TRANSFER Key Yes
INTERCOM Key Yes
PAUSE Key Yes
CONF Key Yes
FWD/DND Key Yes
MESSAGE Key Yes
Navigator key Yes*2
4-Directions Key No
CANCEL Key Yes
Program Key No
LED Message/Ringer Lamp Yes (Green/Red)
LED FF Keys Yes (Green/Red)
LED INTERCOM Yes (Green)
LED SP-PHONE Yes (Red)
LED AUTO ANSWER/MUTE Yes (Red)
LED AUTO DIAL/STORE Yes (Red)
LED CONF Yes (Red)
LED FWD/DND Yes (Red)
Self-Labelling (Desi-less) Yes
Auto Redial Yes*3
Off-Hook Monitor Yes
Handset/Headset Mic Mute Yes
Speakerphone Mic Mute Yes
Phone Directory Yes
Feature Access Yes
Outgoing Call Log Yes
Incoming Call Log Yes
Melody Ringer 10 title
Tone Through No
Firmware upload Yes
Peer-to-Peer Connection Yes
VLAN Yes
QoS (DiffServ) Yes
DHCP Client Yes
Audio Codec Yes (G.722/G.711(A-law/u-law)/G.729A)
VoIP Security Yes*4
Ping Transmission Yes
IP Port Flexibility Yes
IPv6 No
Query/Announce Yes
FTP Yes
PTAP Yes
MGCP Yes
RTP Yes
Rerouting to Secondary PBX Yes
Media Relay Gateway Yes
XML Application No
LLDP-MED Yes
System Programming Yes
Station Programming Yes
Local Programming Yes*5
Electric Volume Headset 6 levels
Electric Volume Handset 6 levels
Electric Volume Speakerphone 8 levels
Electric Volume Ringer 4 + Off
Tones/Music Ring tone 30
Tones/Music on Hold No (Tone)
ECO mode Yes
Ethernet Speed/Duplex Yes (Auto/10M-Full/10M-Half/100M-Full/100M-Half)
Footnote *1 Compatible with Plantronics serial bus (PSB)
*2 Both Navigator Key and 4-Directions Key are a kind of arrow-key. Navigator Key has ENTER button but 4-Directions Key does not have ENTER button.
*3 Auto Redial feature is available on digital CO.
*4 This is the authentication method which prevents malevolent people from spoofing.
*5 Local Programming items (IP Address/Subnetmask/Default Gateway/MAC Address (Only display)/MGCP Server IP Address/Ping send etc.). Language: only English
Download Full Spec Sheet (PDF)

Technical Documents

Warranty