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Poly SoundPoint IP 550 HD Desktop Phone

This is an end of life product – Please contact our sales team for the up to date models.


Revolutionary sound quality and advanced features in a four-line SIP phone
Introducing the SoundPoint IP 550 desktop phone, a four-line SIP phone that delivers calls of unprecedented richness and clarity and supports a comprehensive range of cutting-edge features.

Unparalleled Sound Quality
The SoundPoint IP 550 desktop phone features Poly’s revolutionary HD Voice™ technology, which brings life-like richness and clarity to every call.1,5 Poly HD Voice technology incorporates wideband audio for over twice the voice clarity; Poly’s patented Acoustic Clarity Technology for crystal-clear, noise- and echo-free sound, plus best-in-class system design for high-fidelity, faithful voice reproduction.

Comprehensive, Cutting-Edge Feature Set
The SoundPoint IP 550 desktop phone delivers advanced features and capabilities, such as shared call/ bridged line appearance, busy lamp field (BLF), presence, text messaging, and buddy lists. The SoundPoint IP 550 phone also boasts an integrated XHTML micro-browser that allows users to take advantage of productivity-enhancing Web-based applications. Add the support of four lines, a backlit, high resolution, easy-to-read graphical display and flexible customizations options, and it becomes clear why the SoundPoint IP 550 is certain to meet the voice communication needs of the most demanding managers and professionals.


  • Four lines
  • Backlit 320 x 160-pixel graphical grayscale LCD
  • Shared call/bridged line appearance
  • Busy lamp field (BLF)
  • Presence, buddy lists
  • XHTML micro-browser for Web applications
  • Integrated IEEE 802.3af Power over Ethernet (PoE) support
  • Remote, zero-touch provisioning with support of a variety of servers

Lines (Directory Numbers)
Up to 4 lines with up to 2 concurrent calls per line

320 x 160-pixel backlit grayscale graphical LCD
White LED back light with custom intensity control

Feature Keys
4 context-sensitive “soft” keys
26 dedicated “hard” keys
4 line keys with bi-color (red/green) LED
8 feature keys
6 display/menu navigation keys
2 volume control keys
Illuminated mute key
Illuminated headset key
Illuminated hands-free speakerphone key
Dedicated hold key

Headset Compatibility
Dedicated RJ-9 headset port
Amplified headsets are recommended

Hearing Aid Compatibility
Compliant with ADA Section 508 Recommendations:
Subpart B 1194.23 (all)
Hearing Aid Compatible (HAC) handset for magnetic coupling to approved HAC hearing aids
Compatible with commercially-available TTY adapter equipment

Audio Features
Poly HD Voice technology delivers life-like voice
quality for each audio path - the handset, the
hands-free speakerphone, and the optional headset1, 5
Full-duplex hands-free speakerphone
Type 1 compliant with IEEE 1329 full duplex standards
Frequency response - 100Hz - 7kHz for handset, optional headset and hands-free speakerphone modes
Codecs: G.722 (wideband), G.711 µ/A, and G.729A
(Annex B)
Individual volume settings with visual feedback for each audio path
Voice activity detection
Comfort noise fill
DTMF tone generation / DTMF event RTP payload
L ow-delay audio packet transmission
Adaptive jitter buffers
Packet loss concealment
Acoustic echo cancellation
Background noise suppression

Call Handling Features
Shared call / bridged line appearance
Flexible line appearance (one or more line keys
can be assigned for each line extension)
Busy Lamp Field (BLF)
Distinctive incoming call treatment / call waiting
Call timer
Call transfer, hold, divert (forward), pickup
Called, calling, connected party information
Local three-way conferencing
One-touch speed dial, redial
Call waiting
Remote missed call notification
Automatic off-hook call placement
Do not disturb function
Other Features
Integration with Microsoft LCS 2005 for telephone and presence
Local feature-rich GUI
Time and date display
User-configurable contact directory and call history (missed, placed, and received)
Customizable call progress tones
Wave file support for call progress tones
Unicode UTF-8 character support. Multilingual user interface encompassing Chinese, Danish, Dutch, English (Canada/US/UK), French, German, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Slovenian, Spanish, Swedish

Protocol Support
IETF SIP (RFC 3261 and companion RFCs)

Network and Provisioning
Two-port 10/100 Mbps Ethernet switch
Manual or dynamic host configuration protocol (DHCP) network setup
Time and date synchronization using SNTP
FTP/TFTP/HTTP/HTTPS3 server-based central provisioning for mass deployments.
Provisioning4 server redundancy supported
Web portal for individual unit configuration
QoS Support – IEEE 802.1p/Q tagging (VLAN), Layer 3 TOS, and DSCP
Network Address Translation (NAT) support – static
RTCP support (RFC 1889)
Event logging
Local digit map
Hardware diagnostics
Status and statistics

Transport Layer Security (TLS)
Encrypted configuration files
Digest authentication
Password login
Support for URL syntax with password for boot server
HTTPS secure provisioning
Support for signed software executables

Built-in, auto-sensing IEEE 802.3af Power over Ethernet
External Universal AC adapter (included 48V DC)

FCC Part 15 (CFR 47) Class B
ICES-003 Class B
EN55022 Class B
CISPR22 Class B
VCCI Class B
EN61000-3-2; EN61000-3-3
ROHS compliant

CE Mark
EN 60950-1
IEC 60950-1
AS/NZS 60950

Operating Conditions
Temperature: 0 to 40°C (+32 to 104°F)
Relative humidity: 5%-95% (noncondensing)

Storage Temperature
-40 to +70 degrees C (-40 to +160 degrees F)

SoundPoint IP 550 Comes with:
SoundPoint IP 550 console
Handset with handset cord
Base stand
Network (LAN) cable
Universal power adapter (including country-specific cord kit)
Quick Start Guide
Product registration card

10.5 in x 6 in x 7.5 in x 2.5 in
(26.5 cm x 15 cm x 19 cm x 6.5 cm) (W x H x D x T)

Part Numbers/UPC Codes
2200-12550-122 / 610807526735 for Europe, India, Rest of the World

Box Dimensions/Weight
12.5 in x 13.25 in x 3.5 in

Master Carton Quantity

Country of Origin

One year
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