Highlights
Full-featured 8-line business-class IP phone supporting Power over Ethernet (PoE)
Monochrome backlit display for ease of use, aesthetics, and on-screen applications
Connects directly to an Internet telephone service provider or to an IP private branch exchange (PBX)
Wideband audio for unsurpassed voice clarity and enhanced speaker quality
Easy installation and highly secure remote provisioning, as well as menu-based and web-based configuration
Supports up to two Cisco SP500S Expansion Module, adding up to 64 additional buttons*
Supports both Session Initiation Protocol (SIP) and Smart Phone Control Protocol (SPCP) with the Cisco Unified Communications 500 Series for Small Business
Comprehensive Interoperability and SIP-Based Feature Set
Part of the Cisco Small Business Pro Series, the SIP-based Cisco SPA508G 8-Line IP Phone (Figure 1) has been tested to ensure comprehensive interoperability with equipment from voice over IP (VoIP) 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 SPA508G 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 SPA508G.
The Cisco SPA508G 8-Line IP Phone also supports productivity-enhancing features such as VoiceView Express, and Cisco XML applications when used with the Cisco Unified Communications 500 Series in SPCP mode.
Carrier-Grade Security, Provisioning, and Management
The Cisco SPA508G uses standard encryption protocols to perform highly secure remote provisioning and unobtrusive in-service software upgrades. 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 SPA508G 8-Line IP Phone
Telephony Features
Eight voice lines
Eight independent SIP Registrations*
Line status: active line indication, with name and number
Menu-driven user interface
Shared line appearance**
Speakerphone
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 (60 entries each): made, answered, and missed calls
Redial from call logs
Personal directory with auto-dial (100 entries)
Do not disturb
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 start time stored in call logs
Call timer
Name and identity (text) displayed at startup
Distinctive ringing based on calling and called number
10 user-downloadable ring tones
Speed dialing, eight entries
Configurable dial/numbering plan support
Intercom**
Group paging**
Network Address Translation (NAT) Traversal, including Simple Traversal of UDP Through NATs (STUN) support
DNS SRV and multiple A records for proxy lookup and proxy redundancy
Syslog, debug, report generation, and event logging
Highly secure call encrypted voice communications support
Built-in web server for administration and configuration with multiple security levels
Automated remote provisioning, multiple methods; up to 256-bit encryption (HTTP, HTTPS, Trivial File Transfer Protocol [TFTP])
Option to require administrator password to reset unit to factory defaults
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
4-way rocking directional knob for menu navigation
Voicemail message waiting indicator (VMWI) 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
LED test function
Two Ethernet ports with integrated Ethernet switch: 10/100BASE-T RJ-45
802.3af-compliant PoE
Optional 5 VDC universal (100-240V) switching; power supply is ordered separately (Cisco PA100)
Regulatory Compliance
FCC (Part 15, Class B), CE Mark, A-Tick, C-Tick, Telepermit, UL, CB
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
SIP over Transport Layer Security (TLS)
Secure Real-Time Transport Protocol (SRTP)
Documentation
Quick-Start Installation and Configuration Guide
User Guide
Administration Guide
Provisioning Guide (for service providers only)
Package Contents
Cisco SPA508G 8-Line IP Phone, handset, and stand
Handset cord
RJ-45 Ethernet cable
Quick-Start Guide
CD
Specifications
Table 1 gives specifications for the Cisco SPA508G 8-Line IP Phone.
Table 1. Specifications for the Cisco SPA508G 8-Line IP Phone
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 SPA508G at the time of provisioning.
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Specifications
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Data networking
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MAC address (IEEE 802.3)
IPv4 (RFC 791)
Address Resolution Protocol (ARP)
DNS: A record (RFC 1706), SRV record (RFC 2782)
Dynamic Host Configuration Protocol (DHCP) client (RFC 2131)
Internet Control Message Protocol (ICMP) (RFC 792)
TCP (RFC 793)
User Datagram Protocol (UDP) (RFC 768)
Real-Time Transport Protocol (RTP) (RFC 1889, 1890)
Real Time Control Protocol (RTCP) (RFC 1889)
Differentiated Services (DiffServ) (RFC 2475)
Type of service (ToS) (RFC 791, 1349)
VLAN tagging 802.1p/Q: Layer 2 quality of service (QoS)
Simple Network Time Protocol (SNTP) (RFC 2030)
Cisco Discovery Protocol (CDP)
Link Layer Discovery Protocol (LLDP)
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Voice gateway
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SIP version 2 (RFC 3261, 3262, 3263, 3264)
SPCP with the Cisco Unified Communications 500 Series
SIP proxy redundancy: dynamic via DNS SRV, A records
Reregistration with primary SIP proxy server
SIP support in NAT networks (including STUN)
SIPFrag (RFC 3420)
Secure (encrypted) calling via SRTP
Codec name assignment
Voice algorithms:
G.711 (A-law and -law)
G.726 (16/24/32/40 kbps)
G.729 A
G.722
Dynamic payload support
Adjustable audio frames per packet
Dual-tone multifrequency (DTMF), in-band and out-of-band (RFC 2833) (SIP INFO)
Flexible dial plan support with interdigit timers
IP address/URI dialing support
Call progress tone generation
Jitter buffer: adaptive
Frame loss concealment
Comfort Noise Generation (CNG)
Voice activity detection (VAD) with silence suppression
Attenuation/gain adjustments
VMWIVoicemail waiting indicator, via NOTIFY, SUBSCRIBE
Caller ID support (name and number)
Third-party call control (RFC 3725)
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Provisioning, administration, and maintenance
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Integrated web server provides web-based administration and configuration
Telephone keypad configuration via display menu/navigation
Automated provisioning and upgrade via HTTPS, HTTP, TFTP
Asynchronous notification of upgrade availability via NOTIFY
Nonintrusive in-service upgrades
Report generation and event logging
Statistics transmitted in BYE message
Syslog and debug server records: configurable per line
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Power supply
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Power supply is optional and is purchased separately
Models: Cisco PA100-NA, PA100-EU, PA100-UK, PA100-AU
DC output voltage: +5 VDC at 2.0A maximum
Switching power adapter: 100-240V 50-60 Hz AC input
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Physical interfaces
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Two 10/100BASE-T RJ-45 Ethernet ports (IEEE 802.3)
Handset: RJ-9 connector
Built-in speakerphone and microphone
Headset 2.5mm jack
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Indicator lights/LEDs
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Speakerphone on/off button with LED
Headset on/off button with LED
Mute button with LED
Message waiting LED
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Body dimensions (W x H x D)
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8.42 x 8.35. x 1.73in. (214 x 212 x 44 mm)
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Unit weight
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2.00 lb ( 0.9 kg)
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Operating temperature
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32 ~ 104F (0 ~ 40C)
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Storage temperature
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-4 ~ 158F (-20 ~ 70C)
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Operating humidity
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5% to 95% noncondensing
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Storage humidity
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5% to 95% noncondensing
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Table 2 compares the SPA508G with other Cisco SPA 500 Series IP Phones.
Table 2. Cisco SPA500 Series IP Phone Comparison
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Model
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Voice Lines
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Ethernet Ports
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High-Resolution Graphical Display
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PoE Support
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SPA501G
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8
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2
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No
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Yes
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SPA502G
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1
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2
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Yes
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Yes
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SPA504G
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4
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2
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Yes
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Yes
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SPA508G
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8
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2
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Yes
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Yes
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SPA509G
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12
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2
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Yes
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Yes
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SPA525G / SPA525G2
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5
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2
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Color
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Yes
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