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Cisco SPA508G 8-Line IP Phone

8-line IP phone with display and LED line status indicators

Manufacturer Ref.: SPA508G Product Ref.: CISPA508
Cisco SPA508G Cisco SPA508G

Key features

  • 8-line professional VoIP phone
  • Power Over Ethernet- PoE
  • Cisco HD Voice sound
  • Backlit graphical display
  • Full Duplex speakerphone
  • Headset port
  • Call transfer, call waiting, call conferencing
  • Compatible with extension module

  • Free standard shipping on this item
  • Delivery date with Express Shipping: 07/07/2020
  • 2 years standard warranty
£84.99 ex. VAT
£101.99 incl. VAT

Product information

The Cisco SPA 508G 8-Line IP Phone is a cost-effective 8_line VoIP phone with backlit graphical display.

The Cisco SPA508 is a great vallue SIP phone with a wide range of functions which make this an ideal choice for offices. Its backlit graphical display shows the name and number of incoming callers and the 4-way navigation button facilitates use of this phone's features.

If you need more programmable keys, up to two SPA 500S expansion modules can be attached (sold separately), each adding 32 keys with LEDs.


• 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)


• 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

Warranty 2 years
Connecting line IP
Number of lines 8
Key features With 3-way conference, With call recorder
Function keys With call key , With hands free kit, With mute key , With navigation key , With pause key
Phonebook features  100 entries
Expansion module Compatible with up to 2 modules
Optimized for Microsoft Lync Not optimized for Microsoft Lync
Volume control Ringtone volume control
Hearing aid compatible Not compatible with hearing aid
Speakerphone Yes
Hands free With hands free kit
Headset port With headset port
Type of headset jack 2.5 mm
Sound quality HD voice sound
Line powered Self-powered
Power source PoE powered
Display Without display
Type of display Black and white display
Keypad Numerical keypad
Number of ringtones 10
Colour Black
Call indicator LED With LED call indicator
Connectivity 2 RJ45 ports, Headset port
Wall mounting Without wall mounting
In the box
  • IP SPA 508 with stand
  • Cable
  • RJ45 Ethernet cable
  • 1 quick start guide
Cisco SPA508G IP Phone - User Manual (EN) (1.66 MB)

Cisco SPA508G IP Phone Datasheet (EN) (180.13 KB)

Plantronics 2.5mm QD Cable (10ft)
£17.99 ex. VAT
Cisco SPA500S Expansion Module
£59.99 ex. VAT
Ref: CISPA500S
Sennheiser CEHS-CI 01 Cisco Adapter
£18.99 ex. VAT
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