Product Highlights

• Full featured two or four line business class IP Phone supporting Power over Ethernet 802.3af
• Connect directly to an Internet Telephone Service Provider or connect to an IP PBX
• Dual switched Ethernet ports, Speakerphone, Caller ID, Call Hold, Conferencing, and more
• Easy installation and secure remote provisioning. Menu based and web based configuration.

Telephony Features

• Up to Four Call Appearances with Independent Configuration and Registration
• The SPA942 ships with two line appearances enabled. A two line upgrade is available via a software license key installed locally using the SPA942 web interface, or installed remotely via a secure profile update.
• Pixel Based Display: 128x64 Monochrome Graphical Liquid Crystal Display (LCD)
• Line Status - Active Line Indication, Name and Number
• Menu Driven User Interface
• Digits Dialed with Number Auto-Completion
• Shared Line Appearance **
• Speakerphone
• Call Hold
• Music on Hold **
• Call Waiting
• Caller ID Name and Number and Outbound Caller ID Blocking
• Outbound Caller ID Blocking
• Call Transfer - Attended and Blind
• Call Conferencing
• Automatic Redial
• On-Hook Dialing
• Call Pick Up - Selective and Group **
• Call Park and UnPark **
• Call Swap
• Call Back on Busy
• Call Blocking - Anonymous and Selective
• Call Forwarding - Unconditional, No Answer, On Busy
• Hot Line and Warm Line Automatic Calling
• Call Logs (60 entries each): Made, Answered, and Missed Calls
• Redial from Call Logs
• Personal Directory with Auto-dial (100 entries)
• Do Not Disturb (callers hear line busy tone)
• URI (IP) Dialing Support (Vanity Numbers)
• On Hook Default Audio Configuration (Speakerphone and Headset)
• Multiple Ring Tones with Selectable Ring Tone per Line
• Called Number with Directory Name Matching
• Call Number using Name - Directory Matching or via Caller ID
• Subsequent Incoming Calls with Calling Name and Number
• Date and Time with Intelligent Daylight Savings Support
• Call Duration and Start Time Stored in Call Logs
• Call Timer
• Name and Identity (Text) Displayed at Start Up
• Distinctive Ringing Based on Calling and Called Number
• Ten User Downloadable Ring Tones - Ring Tone Generator Free from www.linksys.com
• Speed Dialing
• Configurable Dial/Numbering Plan Support - per Line
• Intercom **
• Group Paging **
• DNS SRV and Multiple A Records for Proxy Lookup and Proxy Redundancy
• Syslog, Debug, Report Generation, and Event Logging
• Secure Call Encrypted Voice Communication Support
• Built-in Web Server for Administration and Configuration with Multiple Security Levels
• Automated Provisioning, Multiple Methods. Up to 256 Bit Encryption: (HTTP, HTTPS, TFTP)
• Optionally Require Admin Password to Reset Unit to factory Defaults
  
  **Feature requires support by SIP server

Hardware

• Pixel Based Display: 128x64 Monochrome LCD Graphical Display
• Four Illuminated Call Appearance Line Buttons with Tricolor LED's
• LED Indicates Line State – Active, Idle, On-Hold, Unregistered
• Line LED Configurable to 13 Different States (On/Off, Color, Flash)
• Dedicated Illuminated Buttons for:
  - Audio Mute On/Off
  - Headset On/Off
  - Speakerphone On/Off
• Four Soft Key Buttons
• Four Way Rocking Directional Knob for Menu Navigation
• Voice Mail Message Waiting Indicator Light
• Voice Mail Message Retrieval Button
• Dedicated Hold Button
• Settings Button for Access to Feature, Set-up, and Configuration Menus
• Volume Control Rocking Up/Down Knob Controls Handset, Headset, Speaker, Ringer
• Standard 12-Button Dialing Pad
• High Quality Handset and Cradle
• Built-In High Quality Microphone and Speaker
• Headset Jack – 2.5 millimeter
• Ethernet LAN – 10BaseT RJ-45
• 5 volt DC Universal (100-240 Volt) Switching Power Adaptor
• LED Test Function
• Two Ethernet LAN – 100BaseT RJ-45
• 802.3af Compliant Power over Ethernet (PoE)
• Optional 5 volt DC Universal (100-240 Volt) Switching Power Adaptor - Power Supply is Ordered Separately

Security

• Password Protected System, Preset to Factory Default
• Password Protected Access to Administrator and User Level Features
• HTTPS with Factory Installed Client Certificate
• HTTP Digest - Encrypted Authentication via MD5 (RFC 1321)
• Up to 256-bit AES Encryption

Data Networking

• MAC Address (IEEE 802.3)
• IPv4 - Internet Protocol v4 (RFC 791) upgradeable to v6 (RFC 1883)
• ARP - Address Resolution Protocol
• DNS - A Record (RFC 1706), SRV Record (RFC 2782)
• DHCP Client - Dynamic Host Configuration Protocol (RFC 2131)
• ICMP - Internet Control Message Protocol (RFC792)
• TCP - Transmission Control Protocol (RFC793)
• UDP - User Datagram Protocol (RFC768)
• RTP - Real Time Protocol (RFC 1889) (RFC 1890)
• RTCP - Real Time Control Protocol (RFC 1889)
• DiffServ (RFC 2475), Type of Service - TOS (RFC 791/1349)
• VLAN Tagging 802.1p/q - Layer 2 QoS
• SNTP - Simple Network Time Protocol (RFC 2030)

Voice Gateway

• SIPv2 - Session Initiation Protocol Version 2 (RFC 3261, 3262, 3263, 3264)
• SIP Proxy Redundancy - Dynamic via DNS SRV, A Records
• Re-registration with Primary SIP Proxy Server
• SIP Support in Network Address Translation Networks - NAT (including STUN)
• SIPFrag (RFC 3420)
• Secure (Encrypted) Calling via Pre-Standard Implementation of Secure RTP
• Codec Name Assignment
• Voice Algorithms:
  - G.711 (A-law and µ-law)
  - G.726 (16/24/32/40 kbps)
  - G.729 A
  - G.723.1 (6.3 kbps, 5.3 kbps)
• Dynamic Payload Support
• Adjustable Audio Frames Per Packet
• DTMF: In-band and Out-of-Band (RFC 2833) (SIP INFO)
• Flexible Dial Plan Support with Inter-Digit Timers
• IP Address / URI Dialing Support
• Call Progress Tone Generation
• Jitter Buffer - Adaptive
• Frame Loss Concealment
• VAD - Voice Activity Detection with Silence Suppression
• Attenuation / Gain Adjustments
• MWI - Message Waiting Indicator Tones
• VMWI - Voice Mail Waiting Indicator - Via NOTIFY, SUBSCRIBE
• Caller ID Support (Name and Number)
• Third Party Call Control (RFC 3725)

Provisioning, Administration & Maintenance

• Integrated Web Server Provides Web Based Administration and Configuration
• Telephone Key Pad Configuration via Display Menu / Navigation
• Automated Provisioning and Upgrade via HTTPS, HTTP, TFTP
• Asynchronous Notification of Upgrade Availability via NOTIFY
• Non-intrusive, In-Service Upgrades
• Report Generation and Event Logging
• Statistics Transmitted in BYE Message
• Syslog and Debug Server Records - Configurable Per Line

Power Supply

• Power supply is optional and is purchased separately
  -- Models: PA100-NA, PA100-EU, PA100-UK, PA100-AU
• Switching Type (100-240v) Automatic
• DC Input Voltage: +5 Volts DC at 2.0 Amps Maximum
• Power Consumption: 5 Watts
• Power Adapter: 100-240v - 50-60Hz (26-34VA) AC Input, 1.8m cord

Physical Interfaces

• 2 100baseT RJ-45 Ethernet Ports (IEEE 802.3)
• Handset: RJ-7 Connector
• Built-in Speakerphone and Microphone
• Headset 2.5 mm Port

Indicator Lights/LED

• Four (4) Call Appearance/Line Buttons with Associated Tricolor LED
• Line LED State Indication: Active, Idle, On Hold, Unregistered
• Speakerphone On/Off Button with LED
• Headset On/Off Button with LED
• Mute Button with LED
• Message Waiting Indicator LED
• Voicemail Message Retrieval Button
• Hold Button
• LED Test Function

Documentation

• Quick-Start Installation and Configuration Guide
• User Guide
• Administration Guide
• Provisioning Guide - For Service Providers Only

Environmental & Regulatory Compliance

• FCC (Part 15, Class B) , CE, A-Tick, ICES-003
• Dimensions
  - 7.68 x 6.30. x 7.09 in (195 x 160 x 180 mm) W x H x D
• Unit Weight
  - 2.15 lbs ( 0.9752 kg)
• Operating Temp.
  - 41º~113ºF (5º~45ºC)
• Storage Temp.
  - 13º~185ºF (-25º~85ºC)
• Operating Humidity
  - 10~90% Non-condensing
• Storage Humidity
  - 10~90% Non-Condensing

Package Contents

• Linksys SPA942 IP Phone, Handset, and Stand
• Handset Cord - 56 cm (26 in)
• RJ45 Ethernet Cable - 1.8 m (6 ft) Cord
• Quick Installation Guide
• Power Supply is Ordered Separately -- Models: PA100-NA, PA100-EU, PA100-UK, PA100-AU