Cisco 8851, Руководство администратора

Страница: 37 / 310

C H A P T E R
3
Cisco IP Phone Hardware
• Phone Overview, page 21
• Cisco IP Phone 8811, page 23
• Cisco IP Phones 8841 and 8845, page 24
• Cisco IP Phone 8851, page 25
• Cisco IP Phones 8861 and 8865, page 26
• Buttons and Hardware, page 27
• Terminology Differences, page 30
Phone Overview
The Cisco IP Phones 8811, 8841, 8851, and 8861 provide voice communication over an Internet Protocol
(IP) network. The Cisco IP Phone functions much like a digital business phone, allowing you to place and
receive phone calls and to access features such as mute, hold, transfer, speed dial, call forward, and more. In
addition, because the phone connects to your data network, it offers enhanced IP telephony features, including
access to network information and services, and customizable features and services.
The Cisco IP Phone 8811 has a grayscale LCD screen.
The Cisco IP Phones 8841, 8851, and 8861 has a 24-bit color LCD screen.
The Cisco IP Phones have the following features:
• Programmable feature buttons that support up to 10 lines or that can be programmed for other features
• Gigabit ethernet connectivity
• Bluetooth support for wireless headsets(Cisco IP Phone 8851 and 8861 only)
• Support for an external microphone and speakers (Cisco IP Phone 8861 only)
• Network connectivity by Wi-Fi (Cisco IP Phone 8861 only)
• USB ports:
◦ one USB port for Cisco IP Phone 8851
◦ two USB ports for Cisco IP Phone 8861
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
21