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Cisco Small Business IP Phones
Advanced, Affordable, Feature-Rich IP Phone for Business or a Home Office


Full-featured 1-line business-class IP phone supporting Power over Ethernet (PoE)

Connects directly to an Internet telephone service provider or to an IP PBX

Dual Gigabit Ethernet switched ports, speakerphone, caller ID, call hold, conferencing, and more

Easy installation and secure remote provisioning, as well as menu-based and web-based configuration

Supports up to two Cisco SPA500S Expansion Modules, adding up to 64 additional buttons

Supports both SIP and SPCP Protocols with Cisco Unified Communication 500 Series

Rich Phone Features and SIP Compatibility

The Cisco ® SPA512G 1-Line IP Phone with 2-Port Gigabit Ethernet Switch provides advanced voice and data communications features small businesses need to stay productive and responsive. Based on Session Initiation Protocol (SIP), the Cisco SPA512G (Figure 1) has been tested to ensure complete interoperability with leading voice over IP (VoIP) equipment from voice over IP infrastructure leaders, enabling service providers to quickly roll out competitive, feature-rich services to their customers.

With hundreds of features and configurable service parameters, the Cisco SPA512G addresses the requirements of traditional business users while building on the advantages of IP telephony. Features such as easy station moves and shared line appearances (across local and geographically dispersed locations) are just some of the many advantages of the SPA512G.

Stylish and affordable, the Cisco SPA512G IP Phone can also be used with productivity-enhancing features such as VoiceView Express, and Cisco XML Applications when interfacing with Cisco Unified Communication 500 Series in SPCP Mode.

Secure and Easy to Manage

The Cisco SPA512G was designed to simplify installation, while providing enhanced security for complete peace of mind. It utilizes standard encryption protocols to perform secure remote provisioning and unobtrusive in-service software upgrades. 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 time and expense of managing, preloading, and reconfiguring customer premises equipment.

Figure 1. Cisco SPA512G 1-Line IP Phone with 2-Port Gigabit Ethernet Switch, PoE and LCD Display

Telephony Features

One voice line with two call appearances

Backlit pixel-based display: 128 x 64 monochrome graphical liquid crystal display (LCD)

Line status: active line indication, name and number

Menu-driven user interface

Shared line appearance*


Call hold

Music on hold*

Call waiting

Caller ID name and number

Outbound caller ID blocking

Call transfer: attended and blind

Three-way call conferencing with local mixing

Multiparty conferencing via external conference bridge

Automatic redial of last calling and last called numbers

On-hook dialing

Call pickup: 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 (100 entries each): made, answered, and missed calls

Redial from call logs

Personal directory with auto-dial (150 entries)

Do not disturb (callers hear line busy tone)

Digits dialed with number auto-completion

Anonymous caller blocking

Uniform Resource Identifier (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

Ability to call number using name: directory matching or via caller ID

Subsequent incoming calls show calling name and number

Date and time with support for intelligent daylight savings

Call duration and start time stored in call logs

Call timer

Name and identity (text) displayed at startup

Distinctive ringing based on calling and called number

12 user-customizable ring tones

Speed dialing, eight entries

Configurable dial/numbering plan support


Group paging

NAT Traversal, including STUN support

DNS SRV and multiple A records for proxy lookup and proxy redundancy

Advanced Port Mirroring between PC Port and SW Port

Debug, syslog, report generation, and event logging

Secure call encrypted voice communication support

Built-in web server for administration and configuration with multiple security levels

Automated remote and secure provisioning via TFTP, HTTP or HTTPS

Option to require administrator password to reset unit to factory defaults

* Feature requires support by call server.

Hardware Features

Pixel-based display: 128 x 64 monochrome LCD graphical display with backlight

Dedicated illuminated buttons for:

– Audio mute on/off

– Headset on/off

– Speakerphone on/off

Four-way rocking directional knob for menu navigation

Voicemail message waiting indicator light

Voicemail message retrieval button

Dedicated hold button

Settings button for access to feature, setup, 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 mm

Electronic Hook Switch (EHS) Support with selected Plantronics headsets with adapter

Gigabit Switch Port and PC Port: 1000BASE-T RJ-45

802.3af compliant Power over Ethernet (PoE)

Optional 5 VDC universal (100-240V) switching power supply is ordered separately

Regulatory Compliance

FCC (Part 15, Class B), CE Mark, A-Tick

Security Features

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 Advanced Encryption Standard (AES) encryption


Quick-Start Installation and Configuration Guide

User Guide

Administration Guide

Provisioning Guide (for service providers only)

Package Contents

Cisco SPA512G IP Phone, handset, and stand

Handset cord

RJ-45 Ethernet cable

Quick Installation Guide


Table 1 gives specifications for the Cisco SPA512G 1-Line IP Phone with 2-Port Gigabit Ethernet Switch.

Table 1. Specifications for the Cisco SPA512G 1-Line IP Phone with 2-Port Gigabit Ethernet Switch
Note: Many features are programmable within a defined range or list of options. Please see the SPA Administration Guide for details. The target configuration profile is uploaded to the SPA512G at the time of provisioning.

DescriptionSpecification Data networkingMAC address (IEEE 802.3)IPv4 - Internet Protocol v4 (RFC 791)ARP - Address Resolution ProtocolDNS - A record (RFC 1706), SRV record (RFC 2782)DHCP Client - Dynamic Host Configuration Protocol (RFC 2131)ICMP - Internet Control Message Protocol (RFC 792)TCP - Transmission Control Protocol (RFC793)UDP - User Datagram Protocol (RFC 768)RTP - Real Time Protocol (RFC 1889) (RFC 1890)RTCP - Real Time Control Protocol (RFC 1889)DiffServ - Differentiated Services (RFC 2475)ToS - Type of Service(RFC 791, 1349)VLAN tagging 802.1p/Q - Layer 2 quality of service (QoS)SNTP - Simple Network Time Protocol (RFC 2030)Voice gatewaySIP v2 - Session Initiation Protocol version 2 (RFC 3261, 3262, 3263, 3264)SPCP - Smart Phone Control Protocol with UC500SIP proxy redundancy - dynamic via DNS SRV, A recordsReregistration with primary SIP proxy serverSIP support in NAT networks (including STUN)SIPFrag (RFC 3420)Secure (encrypted) calling via SRTPCodec name assignmentVoice algorithms:G. 711 (A-law and ?-law)G. 726 (16/24/32/40 kbps)G. 729 AG. 722Dynamic payload supportAdjustable audio frames per packetDTMF - Dual-tone multifrequency, in-band and out-of-band (RFC 2833) (SIP INFO)Flexible dial plan support with interdigit timersIP address/URI dialing supportCall progress tone generationJitter buffer: adaptiveFrame loss concealmentVAD - Voice activity detection with silence suppressionAttenuation/gain adjustmentsMWI - Message waiting indicator tonesVMWI - Voicemail waiting indicator, via NOTIFY, SUBSCRIBECaller ID support (name and number)Third-party call control (RFC 3725)Provisioning, administration,
and maintenanceIntegrated web server provides web-based administration and configurationTelephone keypad configuration via display menu/navigationAutomated provisioning and upgrade via HTTPS, HTTP, TFTPTR-69, TR-104, and TR-111 ProvisioningAsynchronous notification of upgrade availability via NOTIFYNonintrusive in-service upgradesReport generation and event loggingStatistics transmitted in BYE messageDebug and syslog server records: configurable per linePower supplyPower supply is optional and is purchased separatelyModels: PA100-NA, PA100-EU, PA100-UK, PA100-AUSwitching type (100-240V) automaticDC input voltage: +5 VDC at 2.0A maximumPower adapter: 100-240V50-60 Hz (26-34 VA) AC inputPhysical interfacesTwo 10/100/1000BASE-T RJ-45 Ethernet ports (IEEE 802.3)Handset: RJ-9 connectorBuilt-in speakerphone and microphoneHeadset 2.5-mm portIndicator lights/LEDSpeakerphone on/off button with LEDHeadset on/off button with LEDMute button with LEDMessage waiting indicator LEDVoicemail message retrieval buttonHold buttonBody Dimensions (W x H x D)0.42 x 8.35 x 1.73 in. (214 x 212 x 44 mm)Unit weight2.43 lbs (1.1 kg)Operating temperature @ sea level32? ~ 113?F (0? ~ 40?C)Storage temperature @ sea level-13? ~ 185?F (-20? ~ 70?C)Operating humidity @ sea level5% to 95% noncondensingStorage humidity @ sea level5% to 95% noncondensing

Table 2 compares the SPA512G with other Cisco Small Business 500 Series IP Phones.

Table 2. Cisco Small Business SPA500 Series IP Phone Comparison

ModelVoice LinesEthernet PortsGigabit EthernetEHSHigh- Resolution Graphical DisplayPoE SupportSPA501G82


SPA502G12No NoYesYesSPA512G 12YesYesY esYesSPA504G4

2NoNoYesYes SPA514G42Yes YesYesYesSPA 508G82NoNo YesYesSPA509G1 22NoNoYes

YesSPA525G252 NoNoColorYes

Manufacturer link Продукт известен още и като SPA 512 G, SPA 512G, SPA512 G
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