手机功能
| 呼叫转移 |
Y |
| 快速拨号 |
Y |
| 呼叫等待 |
Y |
| 主叫号码 |
Y |
| 信息等待指示器（MWI） |
Y |
| 呼叫代接 |
Y |
| 通话保持 |
Y |
技术细节
| 背光键盘 |
Y |
| 手机类型 |
Wired handset |
| 装置锁定 |
Y |
| 免提听筒电话 |
Y |
联网
| 蓝牙 |
Y |
| 无线局域网连接 |
N |
| 动态主机配置协议客户 |
Y |
| 支持服务质量（QoS） |
Y |
| 支持网络协议 |
SIP, SPD, UDP, GARP, DNS, TFTP, HTTPS, VLAN, RTP, RTCP, PPDP |
另外
| 以太网路(RJ-45)连接接口数量 |
2 |
| 以太网连接器 |
N |
| 呼叫能力 |
Y |
800 × 480, 24-bit color, 5 WVGA, RJ-9, USB, 2 x 10/100/1000BASE-T Ethernet, Bluetooth 3.0+EDR, PoE, 1.19 kg, 3rd Party Call Ctrl
The Cisco® IP Phone 8851 is a business-class collaboration endpoint that combines high-fidelity, reliable, secure, and scalable voice communications with Cisco Intelligent Proximity for telephony integration for personal mobile devices to support midsize to large enterprise businesses.
With the Cisco IP Phone 8851, you can increase personal productivity through an engaging user experience that is both powerful and easy-to-use. The IP Phone 8851 combines an attractive new ergonomic design with wideband audio for crystal clear voice communications, “always-on” reliability, encrypted voice communications to enhance security, and access to a comprehensive suite of unified communication features from Cisco communication servers.
In addition, Cisco Intelligent Proximity brings the worlds of desk and mobile together for you when you are using your mobile device at the desk for your work. You can move the audio path over to the Cisco IP Phone 8851 during active mobile calls to take advantage of its superior audio acoustics. An example would be to share a conversation with a colleague who you want to listen in. This capability gives you greater flexibility and a superior user experience when at your desk.
The IP Phone 8851 also comes standard with a USB port so you can charge your smartphone when at your desk, and stay connected when away from your desk.
The Cisco IP Phone 8851 offers five programmable line keys. You can configure keys to support either multiple directory numbers or calling features such as speed dial. You can also boost productivity by handling multiple calls for each directory number using the multicall-per-line feature. Fixed-function keys give you one-touch access to applications, messaging, directory, as well as often-used calling features such as hold/resume, transfer, and conference. A five-way navigation cluster helps you transition through menus more easily. Backlit acoustic keys provide flexibility for audio path selection and switching.
<b>Other key features of the phone follow:</b>
- The Cisco IP Phone 8851 offers a 5-in. high-resolution (800 x 480) widescreen VGA backlit color display. Localized language support, including right-to-left on-screen text, meets the needs of global users.
- The phone supports a built-in Gigabit Ethernet switch for your PC connection.
- Support for Cisco EnergyWise™ technology makes the Cisco IP Phone 8851 more energy-efficient and ecofriendly; the phone is qualified by the Energy Star organization.
- An optional wall-mount kit is orderable as a spare part for customers seeking this capability.
