User Interface Features

• 2.8” colour LCD screen (320x240 pixel resolution)
• Voicemail support
• Adjustable base height
• Unicode UTF-8 character support
• Single USB port (2.0 compliant) for Plantronics USB headset or Wi-Fi 5G dongle
• Multilingual user interface

Audio Features

• Polycom HD Voice delivers lifelike voice quality for each audio path handset, the hands-free speakerphone, and the optional headset.
• Polycom Acoustic Clarity provides full-duplex conversations, acoustic echo cancellation and background noise suppression.
• 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

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 Features

• 4 lines (programmable line 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), pickup
• Called, calling, connected party information
• Local 3-way audio conferencing 1-touch speed dial, redial
• Remote missed call notification
• Do not disturb function
• Electronic hook switch capable
• Local configurable digit map/dial plan

Open Application Platform

• OBi XML applications
• Corporate directory access using LDAP

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 synchronisation 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
• 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)
• External universal AC/DC adapter (optional) 5VDC @ 3A (15W)
• ENERGY STAR® rated

Approvals

• FCC Part 15 (CFR 47) Class B
• ICES-003 Class B
• EN55032 Class B
• ISPR32 Class B
• VCCI Class B
• EN55024
• EN61000-3-2; EN61000-3-3
• NZ Telepermit
• Korea KCC3
• UAE TRA
• Russia CU3
• Brazil ANATEL3
• Australia RCM
• South Africa ICASA3
• Saudi Arabia CITC
• China CCC3
• RoHS Compliant

Safety

• UL 60950-1/62368-1
• CE Mark
• CAN/CSA C22.2 No 60950-1/62368-1-1
• EN 60950-1/62368-1
• IEC 60950-1/62368-1
• AS/NZS 60950-1

Operating Conditions

• Temperature: 0 to 40°C (+32 to 104°F)
• Relative humidity: 5% to 95%, noncondensing

Storage Temperature

• -40 to +70°C (-40 to +160°F)

Polycom VVX 250 comes with

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

Size

• 24cm x 23cm x 5.7cm WxHxD (9.4in x 10in x 2.2in WxHxD)

Weight

• Carton weight: 0.890kg (1.96lbs)

Warranty

• One (1) year