Polycom WX 250

• Four line keys supporting up to 34 line key appearance with pagination.
• 2.8 inch color LCD display (320 x 240 pixels).
• Crystal clear sound with Poly HD Voice and Poly Acoustic Clarity.
• Full duplex speakerphone with world-class echo cancellation.
• Easy to install anywhere with optional Poly Wi-Fi USB accessory.
• Headset options to suit any style (USB, RJ9, EHS).
• Microban® antimicrobial product protection actively reduces the growth of bacteria 24/7.
• Reduce your carbon footprint with these ENERGY STAR® rated phones.

User Interface Features

• 2.8” color LCD screen (320×240 pixel resolution)
• Voicemail support¹
• WebKit-based browser
• Adjustable base height
• Unicode UTF-8 character support
• Single USB port (2.0 compliant) for media and storage applications
• Multilingual user interface including Chinese, Danish, Dutch, English (Canada/US/UK), French, German, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Slovenian, Spanish and Swedish

Audio Features Of The Poly VVX 250 Business IP Phone

• Poly HD Voice delivers lifelike voice quality for each audio path handset, the hands-free speakerphone, and the optional headset
• Poly Acoustic Clarity provides full-duplex conversations, acoustic echo cancellation and background noise suppression
• Poly Acoustic Fence technology removes background office noise heard by far end when using handset or wired headset
• Poly Computer Audio Connector app installed on your PC (Windows only) lets you to play computer audio through your VVX phone and use your phone as a microphone
• Type 1 compliant (IEEE 1329 full duplex)
• Frequency response—150 Hz—7 kHz for handset, optional headset and handsfree speakerphone modes
• Codecs: G.711 (A-law and μ-law), G.729AB, G.722, iLBC, OPUS
• Individual volume settings with visual feedback for each audio path
• Voice activity detection
• Comfort noise generation
• DTMF tone generation (RFC 2833 and in-band)
• Low-delay audio packet transmission
• Adaptive jitter buffers
• Packet loss concealment
• OPUS support

Headset And Handset Compatibility

• Dedicated RJ-9 headset port
• Hearing aid compatibility to ITU-T P.370 and TIA 504A standards
• Compliant with ADA Section 508 Subpart B 1194.23 (all)
• Hearing aid compatible (HAC) handset for magnetic coupling to hearing aids
• Compatible with commercially-available TTY adapter equipment

Call Handling Features¹

• 4 lines (programmable line keys)
• Up to 34 line key assignments for lines, contacts, and features supported with pagination
• Enhanced Feature Keys make powerful feature shortcuts on line key appearances or soft keys
• Shared call/bridged line appearance
• Busy lamp field (BLF)
• Flexible line appearance (1 or more line keys can be assigned for each line extension)
• Distinctive incoming call treatment/ call waiting
• Call timer and call waiting
• Call transfer, hold, divert (forward), park, pickup
• Called, calling, connected party information
• Local 3-way audio conferencing 1-touch speed dial, redial
• Remote missed call notification
• Do not disturb function
• Reverse Number Lookup via LDAP
• Calling Party Identification (RFC8225 classifications—Trusted, Unknown, SPAM)
• Electronic hook switch capable
• Local configurable digit map/dial plan

Open Application Platform

• WebKit-enabled full browser that supports HTML5, CSS, SSL security, and JavaScript
• Supports Poly Apps SDK and API for third-party business and personal applications
• Bundled with Poly UC Software:
• Corporate directory access using LDAP
• Visual Conference Management

Network And Provisioning

• SIP protocol support
• SDP
• IETF SIP (RFC 3261 and companion RFCs)
• Two-port gigabit Ethernet switch 10/100/1000 Base-TX across LAN and PC ports
• Conforms to IEEE802.3-2005 (Clause 40) for physical media attachment
• Conforms to IEEE802.3-2002 (Clause 28) for link partner auto-negotiation
• Static or dynamic host configuration protocol (DHCP) network setup
• Time and date synchronization using SNTP
• TFTP/HTTP/HTTPS server-based central provisioning for mass deployments
• Call server redundancy supported
• QoS Support—IEEE 802.1p/Q tagging
• (VLAN), Layer 3 TOS, and DHCP
• DHCP VLAN discovery,
• LLDP-MED for VLAN discovery
• Network address translation support for static configuration and “Keep-Alive”
• RTCP and RTP support
• Event logging
• Syslog
• Hardware diagnostics
• Status and statistics reporting
• IPv4, IPv6, dual stack (IPv4/IPv6) mode
• TCP
• UDP
• DNS-SRV

Security

• 802.1X authentication and EAPOL media encryption via SRTP
• Transport layer security (TLS)
• Encrypted configuration files
• Digest authentication
• Password login
• HTTPS secure provisioning
• Support for signed software executables

Power

• Built-in auto-sensing IEEE 802.3af Power over Ethernet (Class 2) 4.5 (Max)
• External universal AC/DC adapter (optional) 5VDC @ 3A (15W)
• ENERGY STAR® rated

Poly VVX 250 Business IP Phone Comes With

• Console
• Desk stand/wall mount bracket
• Handset with handset cord
• Network (LAN) cable—CAT-5E
• Setup sheet

Size

• 23.5 cm x 23.3 cm x 5.6 cm WxHxD • 9.25 in x 9.17 in x 2.2 in WxHxD

VVX 250 PoE Part Number

• Poly SKU: 2200-48820-025
• HP SKU: 89B62AA#AC3

Weight

• Carton weight: 0.890 kg (1.96 lbs)