Linksys SPA921 1-Line IP Telephone with 1 Ethernet Port and hi-Tech Display

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2 Manufacturer Part Number
3 Product Date
4 Product Image
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[edit] Product Name

Linksys SPA921 1-Line IP Telephone with 1 Ethernet Port and Hi-Res Display

[edit] Manufacturer Part Number

SPA921

[edit] Product Date

circa August 2008

[edit] Product Image

[edit] Manufacturer Provided Specifications and Features

Product Features

Full featured one-line business class IP Phone
Connect directly to an Internet Telephone Service Provider or connect to an IP PBX
Speakerphone. Caller ID. Call Hold, Transfer, Conferencing, and more
Easy installation with secure remote provisioning. Menu based and web based configuration.

Specifications

Model

SPA921

Data Networking

MAC Address (IEEE 802.3) IPv4 - Internet Protocol v4 (RFC791) upgradeable to v6 (RFC1883) ARP - Address Resolution Protocol DNS - A Record (RFC1706), SRV Record (RFC2782) DHCP Client - Dynamic Host Configuration Protocol (RFC2131) ICMP - Internet Control Message Protocol (RFC792) TCP - Transmission Control Protocol (RFC793) UDP - User Datagram Protocol (RFC768) RTP - Real Time Protocol (RFC1889) (RFC1890) RTCP - Real Time Control Protocol (RFC1889) DiffServ (RFC2475), Type of Service - TOS (RFC791/1349) VLAN Tagging 802.1p/q - Layer 2 QoS SNTP - Simple Network Time Protocol (RFC2030)

Voice Gateway

SIPv2 - Session Initiation Protocol Version 2 (RFC3261, 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 (RFC3420) 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 (RFC2833) (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 (RFC3725)

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

1 10baseT RJ-45 Ethernet Port (IEEE 802.3) Handset: RJ-7 Connector Built-in Speakerphone and Microphone Headset 2.5 mm Port

Physical Interfaces

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 (6 ft) cord

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

Product Description

Standard features on the SPA921 include a high resolution graphical display, speakerphone, and a 2.5 mm head-set port. The SPA921 supports one line with two call appearances and provides support for three way conferencing, attended call transfer, and placing a call on hold to answer an incoming call. The line can be configured as a unique phone number (or extension), or can be configured to share a number that is assigned to multiple phones.

Comprehensive Interoperability and SIP Based Feature Set

Based on the SIP standard, the SPA921 has been tested to ensure comprehensive interoperability with equipment from VoIP infrastructure leaders enabling service providers to quickly roll-out competitive, feature rich services to their customers. With hundreds of features and configurable sevice parameters, the SPA921 addresses the requirements of traditional business users while leveraging the advantages of IP telephony. Features such as easy station moves, presence, and shared line appearances (across local and geographically dispersed locations) are just some of the many advantages of the SPA921.

Carrier-Grade Security, Provisioning, and Management

The SPA921 uses standard encryption protocols to provide secure remote provisioning and unobtrusive in-service software upgrades. Linksys secure remote provisioning tools include detailed performance measurement and troubleshooting features, enabling network providers to deliver high quality support to their subscribers. Remote provisioning also saves service providers the hassle and expense of managing, pre-loading, and re-configuring customer premise equipment (CPE).