* 4 Line keys with up to 4 SIP accounts
* 4 XML programmable context-sensitive soft keys,
* Up to 32 call appearances with 24+4 speed-dial/BLF extension keys with dual-color LED
* 240 x 120 Pixel backlit graphical LCD display with up to 8 level grayscale
* Dual switched 10/100/1000 Mbps Gigabit
* Ethernet ports with integrated PoE
* Supports Electronic Hook-Switch (EHS)
* HD wideband audio
* Superb full-duplex hands-free speakerphone with advanced acoustic echo cancellation and excellent double-talk performance
* Built-In personalized application service (e.g., local weather, stock, currencies, etc), flexible LCD content customization using XML Learn More

• Bluetooth Support

• Wideband audio for voice clarity and enhanced speaker quality

• Monochrome backlit display for ease of use, aesthetics, and onscreen applications

• Support for up to two SPA 500S or SPA500DS expansion modules

• Multiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) support
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• Easy to install, and designed exclusively for the Cisco® SPA 500 Series IP Phones

• 32 programmable buttons simplify dialing and call transfers

• Multicolored LEDs monitor the status of each configured voice line via Busy Lamp Field (BLF)

• Two attendant consoles can be linked, for a total of 64 buttons Learn More

• Bluetooth Support

• Wideband audio for voice clarity and enhanced speaker quality

• Monochrome backlit display for ease of use, aesthetics, and onscreen applications

• Support for up to two SPA 500S or SPA500DS expansion modules

• Multiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) support Learn More

• Bluetooth Support

• Wideband audio for voice clarity and enhanced speaker quality

• Monochrome backlit display for ease of use, aesthetics, and onscreen applications

• Support for up to two SPA 500S or SPA500DS expansion modules

• Multiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) support Learn More

• Connect up to eight analog devices to your IP network, such as fax, standard phone, or overhead paging system

• Continue to use existing analog phones on your VoIP system

• Excellent for IP Centrex deployments, providing remote provisioning and support for dynamic, in-service software upgrades

• Clear, high-quality voice communication, using standards based voice codec's and quality of service Learn More