Cisco Small Business SPA 525G2 - VoIP Phone - IEEE 802.11g (Wi-Fi) - 3-way Call Capability - SIP, SIP V2, SPCP - 5 Lines - Silver, Dark Gray - Refurbished - SPA525G2-RF

• Menu key
  Accesses call history, directory, speed dials, MP3 player, web applications, user preferences, network configuration, device administration, and status.
• Lighted mute key
  Lights up red when the call is on mute, and turns off when mute is removed. Also lights red in the event of a network failure.
• Lighted headset key
  Lights up green when pressed and using a Bluetooth or 2.5-mm headset for hands-free calling.
• Lighted speakerphone key
  Activates full-duplex speakerphone; stays lit while speakerphone is on.
• Lighted message waiting indicator
  Lights when there is new voicemail; visible on the phone chassis above the LCD screen; stays lit until the new voicemail has been processed by the user.
• 4 soft-key buttons
  Dynamically presents calling options to the user.
• Volume control
  Volume-control toggle provides easy decibel-level adjustments of the handset, monitor speaker, and ringer.

The Cisco SPA525G2 5-line IP phone with color display is an excellent choice for businesses that require an enhanced user experience with a hosted IP telephony service, an IP private branch exchange (PBX), or a large-scale IP Centrex deployment. The SPA525G2 uses industry-leading SPA voice over IP (VoIP) technology from Cisco, with high-quality hardware providing additional connectivity via Bluetooth, PoE (802.3af), or a Wireless-G client (802.11g).
Standard Cisco SPA525G2 features include five active lines, VLAN-capable dual switched Ethernet ports, 802.3af PoE support, a 3.2-inch QVGA color display, a full-duplex, high-quality speakerphone, a Bluetooth interface, a Wireless-G (802.11g) client, a 2.5-mm stereo headset port, and a USB 2.0 host port. Each line can be configured independently to use a unique phone number (or extension) or can use a shared number that is assigned to multiple phones.
The Cisco SPA525G2 IP phone further improves the user experience with VPN and video surveillance applications. It includes an embedded AnyConnect Secure Sockets Layer (SSL) VPN client that allows remote users to securely connect to their phone system and make calls over the Internet, without the need for additional hardware.
The Cisco SPA525G2 provides encrypted signaling, media, and provisioning information, using state-of-the-art technologies such as Session Initiation Protocol (SIP) over Transport Layer Security (TLS), Secure Real Time Protocol (SRTP), and HTTPS to secure communications between the phone and service provider. Cisco SPA secure remote provisioning provides a highly secure mechanism for the service provider to remotely manage the phone/user configuration and software upgrades.