IP Phone介绍

Manual Phone Registration•Manual Phone Registration Overview,on page 1•Manual Device Registration Task Flow,on page 1Manual Phone Registration OverviewTo manually register a new Cisco IP Phone,you must add the phone to the Unified Communications Manager node using Unified Communications Manager,then configure the directory number for the phone.You should have already set up the new phone with the proxy TFTP server IP address so that the new phone knows how to locate the Unified Communications Manager node.See the Cisco IP Phone Administration Guide for your phone series.Manual Device Registration Task Flow ProcedurePurpose Command or ActionSet up the new phone with the proxy TFTPserver IP address so that the new phone knows See the Cisco IP Phone Administration Guide for your phone seriesStep 1how to locate the Unified CommunicationsManager node.Add the phone to the Unified Communications Manager node.Add a Phone to the System Manually,on page 1Step 2Add a directory number for the phone and configure some basic settings for the directorynumber.Configure a Directory Number Manually for a Phone,on page 2Step 3Add a Phone to the System ManuallyManually add a new phone to the Cisco Unified Communications Manager node.ProcedureStep 1In Cisco Unified Communications Manager Administration,select Device >Phone ,then click Add New .Step 2In the Add a New Phone window,select your phone model in the Phone Type field,then click Next .Step 3In the Phone Configuration window,select the protocol type for your device in the Select the device protocol field,then click Next .Step 4In the Device Information area,perform the following actions.a)Enter a name in the Device Name field.The name entered here must match the Device Name that is configured on your phone.See thedocumentation that supports your endpoint device for more information.b)Select a device pool for the phone from the list of device pools.c)Select the phone button template to use from the list of phone button templates.Step 5In the Protocol Specific Information area,select the non-secure profile for your type of phone in the Device Security Profile field.Step 6Click Save .What to do nextConfigure a Directory Number Manually for a Phone,on page 2Configure a Directory Number Manually for a PhoneThere are multiple ways to manually add and configure a directory number (DN)using Cisco UnifiedCommunications Manager Administration.•From the Directory Number Configuration window using Call Routing >Directory Number .•From the Phone Configuration window using Device >Phone when you select either Line [1]-Adda new DN or Line [2]-Add a new DN link in the Association Information area.•From the Phone Configuration window using Call Routing >Phone after you add the phone undercall routing.•From the CTI Route Point Configuration window when you configure a CTI route point using Device >CTI Route Point .This procedure assumes that you are configuring a DN for a new phone using the Phone Configurationwindow that appeared after you added the new phone to the Unified Communications Manager node.Only the settings that apply to your phone model display using thismethod.You can configure phone features at the same time that you add the new DN for the phone.To see all availableDN settings,you must access the Directory Number Configuration window from call routing in the user interface.Tip Manual Phone RegistrationConfigure a Directory Number Manually for a PhoneBefore you beginThe phone is added to the node.The Phone Configuration window should still be visible for the new phone that you are registering.If your system uses partitions,collect the route partition and calling search space information to use for the new phone.ProcedureStep 1Click Line [1]-Add a new DN in the Association area of the Phone Configuration window.If the Phone Configuration window is not already visible,select Device >Phone ,then click Findand select the phone from the list of phones.Tip Step 2In the Directory Number Configuration window,enter a dialable phone number in the Directory Number field.Step 3(Optional)Select a partition in the Route Partition field.Step 4(Optional)Select a calling search space in the Calling Search Space field in the Directory Number Settings area.Step 5(Optional)Configure other directory number features as applicable for the new phone,then click Save .For example,if you already know the user name for the new phone,you can enter that in the Display (Caller ID)field.See the online help for field descriptions.Manual Phone RegistrationConfigure a Directory Number Manually for a PhoneManual Phone Registration Configure a Directory Number Manually for a Phone。

V oIP基本原理与常见设备导读--1995年以色列VocalTec公司所推出的Internet Phone，不但是VoIP网络电话的开端，也揭开了电信IP化的序幕。

1995年以色列VocalTec公司所推出的Internet Phone，不但是VoIP网络电话的开端，也揭开了电信IP化的序幕。

人们从此不但可以享受到更便宜、甚至完全免费的通话及多媒体增值服务，电信业的服务内容及面貌也为之剧变。

一开始的网络电话是以软件的形式呈现，同时仅限于PC to PC间的通话，换句话说，人们只要分别在两端不同的PC上，安装网络电话软件，即可经由IP网络进行对话。

随着宽频普及与相关网络技术的演进，网络电话也由单纯PC to PC的通话形式，发展出IP to PSTN（公共开关电话网络）、PSTN to IP、PSTN to PSTN及IP to IP等各种形式，当然他们的共通点，就是以IP网络为传输媒介，如此一来，电信业长久以PSTN电路交换网网络为传输媒介的惯例及独占性也逐渐被打破。

VoIP的原理、架构及要求由Voice over IP的字面意义，可以直译为透过IP网络传输的语音讯号或影像讯号，所以VoIP就是一种可以在IP网络上互传模拟音讯或视讯的一种技术。

简单地说，它是藉由一连串的转码、编码、压缩、打包等程序，好让该语音数据可以在IP网络上传输到目的端，然后再经由相反的程序，还原成原来的语音讯号以供接听者接收。

进一步来说，VoIP大致透过5道程序来互传语音讯号，首先是将发话端的模拟语音讯号进行编码的动作，目前主要是采用ITU-T G.711语音编码标准来转换。

第二道程序则是将语音封包加以压缩，同时并添加址及控制信息，如此便可以在第三阶段中，也就是传输IP 封包阶段，在浩瀚的IP网络中寻找到传送的目的端。

到了目的端，IP封包会进行译码还原的作业，最后并转换成喇叭、听筒或耳机能播放的模拟音讯。

在一个基本的VoIP架构之中，大致包含4个基本元素：(1)媒体网关器（Media Gateway）：主要扮演将语音讯号转换成为IP封包的角色。

IP电话解决方案概述IP电话（Internet Protocol Telephone）是一种通过互联网协议传输语音的通信方式。

传统的电话通信采用的是模拟信号传输，而IP电话则将语音数字化后，通过互联网进行传输，从而实现了更高质量的通信。

IP电话解决方案是为了满足企业通信需求而设计的一套集成解决方案，主要包括硬件设备和软件应用。

本文将介绍IP电话解决方案的基本原理、组成部分以及优势，并提供一些常见的IP电话解决方案供您参考。

基本原理IP电话解决方案基于互联网协议（IP），利用数据网络进行语音通信。

传统电话通信是通过模拟信号进行传输，而IP电话将语音信号数字化后，通过互联网传输语音数据包，再解密还原为语音信号。

整个过程可以简单分为以下几个步骤：1.语音采样：IP电话解决方案会将语音信号采样并转换为数字信号，一般采用每秒8000次的采样率。

2.数字信号压缩：通过压缩算法对数字信号进行压缩，减小数据包的大小，提高传输效率。

常用的压缩算法有G.711、G.726、G.729等。

3.数据包传输：将压缩后的语音数据包通过互联网传输至目标设备。

4.数据包解压缩：接收端将接收到的数据包进行解压缩，还原为原始的数字信号。

5.语音合成：将解压缩后的数字信号转换为模拟信号，通过扬声器发出声音。

基于以上原理，IP电话解决方案实现了高质量、低成本的语音通信。

组成部分一个典型的IP电话解决方案包括以下几个组成部分：IP电话终端IP电话终端是实现IP电话功能的硬件设备，一般包括麦克风、扬声器、呼叫按钮、显示屏等。

它可以连接到企业的局域网中，通过互联网与其他设备进行通信。

IP电话终端一般支持各种通信协议，如SIP（Session Initiation Protocol）、H.323等。

IP电话服务器IP电话服务器是整个IP电话解决方案的核心部分，它负责电话呼叫的管理、信号转换、用户认证等功能。

IP电话服务器通常运行在企业的服务器上，可以支持多个IP电话注册和呼叫转接。

5402 数字话机•10个固定功能键：会议、转移、挂机、重拨、扬声、信息、保留、静音、音量增大和减小，还有功能键（用于使用12个附加在键盘上的功能）•降低安装和移动成本—无纸质标签•可活动的桌面支架—同时用于桌面和挂墙•全球销售(用图形标识固定按键功能)•只听扬声器•禁用扬声器功能（通过系统管理工具）•分组监听•消息等待指示•兼容助听设备5402 数字话机5410 数字话机• 10个固定功能键：会议、转移、挂机、保持、重拨、静音、音量增大和减小、扬声器、语音留言。

• 12个可编程线路键/功能键 （通过 2个不同页面上对应每页6个功能）• 高端的功能设置，具有提高效率的呼叫记录和快速拨号目录• 高级用户界面• 减少了安装和移动的成本—没有纸制标签• 投资保护，基于可下载的固件• 可活动的桌面支架—同时用于桌面和挂墙• 全球销售 (用图形标识固定按键功能)• 5 x 29 显示• 全双工免提电话• 禁用扬声器功能（通过系统管理工具）• 分组监听• 14个固定功能键，4个软键• 大型消息等待指示灯• 专用语音留言键• 头戴式耳机接口• 自定义使用语言 (在话机菜单中选择)5410 数字话机介绍5420 数字话机•10个固定功能键：会议、转移、挂机、保持、重拨、静音、音量增大和减小、扬声器、语音留言•24个可编程线路键/功能键 (分三页显示，每页对应8个物理显示按键)•高端功能设置，包括有助于提高效率的本地呼叫记录和快速拨号目录•高级用户界面•降低安装和移动成本—无纸质标签•通过可下载固件保护投资•可活动的桌面支架—可用于桌面和挂墙•全球销售 (用图形标识固定按键功能)•7x29 字符显示屏•全双工免提电话•禁用扬声器功能（通过系统管理工具）•分组监听•显示屏下方9个固定功能键•7个显示导航键 (4个软键，3个固定按键)•大型消息等待指示灯•专用语音留言键•头戴式耳机接口•自定义使用语言 (在话机菜单中选择)•EU24 24按键扩展模块接口。

Cisco Unified IP Phone 6921Cisco®Unified IP Phone 6921是思科最新推出的一款创新终端设备，为全球客户带来了价格经济的企业级语音通信服务。

Cisco Unified IP Phone 6921支持两个号码，并配有一个全双工扬声器电话，能够营造出更加高效、灵活、易用的终端设备体验。

Cisco Unified IP Phone 6921采用单一号码单一呼叫模式，提供了类似传统电话的呼叫体验，能够满足希望为其用户提供此类呼叫功能的客户的需求。

用于保持、转移和会议功能的固定按键；以及三色LED线和功能键使得该电话更加简单易用。

Cisco Unified IP Phone 6921提供了更大的个性化支持，可以选择两种颜色和两种听筒款式。

此外，显示屏还支持从右到左的语言显示，可满足全球客户的语言本地化需求。

Cisco Unified IP Phone 6921同时也更加节能环保，能够更好地支持客户的绿色计划。

深层睡眠模式能够显著降低能耗。

在这一模式下，Cisco Unified IP Phone 6921在非办公时间的功耗，比正常工作时间内电话处于空闲状态时的功耗最多可以减少50%。

此外，重新研磨和可回收的塑料也提供了更加环保的解决方案。

特性与优势表1到6显示了电话的特性和其它相关信息，表7显示了订购信息。

表1.特性与优势特性优势发光保持键当按下保持键以保持一个呼叫时，按键灯变亮，直至重新开始保持的呼叫。

当一个呼叫处于保持状态下，有新的呼叫进入时，按键将闪烁。

如果没有呼叫处于保持状态，按键灯关闭。

发光菜单键当按下菜单键以查看语音邮件消息、呼叫记录、网络设置、用户偏好、企业目录和XML服务时，按键灯变亮。

在菜单项保持活动状态期间，该按键灯始终亮起。

发光消息等待指示器当有新的语音邮件时，按键灯变亮，灯光在电话底座和听筒上都明亮可见。

当您开始处理新的语音邮件时，按键灯自动关闭。

Cisco Unified IP Phone 6921Cisco®Unified IP Phone 6921是思科最新推出的一款创新终端设备，为全球客户带来了价格经济的企业级语音通信服务。

Cisco Unified IP Phone 6921支持两个号码，并配有一个全双工扬声器电话，能够营造出更加高效、灵活、易用的终端设备体验。

Cisco Unified IP Phone 6921采用单一号码单一呼叫模式，提供了类似传统电话的呼叫体验，能够满足希望为其用户提供此类呼叫功能的客户的需求。

用于保持、转移和会议功能的固定按键；以及三色LED线和功能键使得该电话更加简单易用。

Cisco Unified IP Phone 6921提供了更大的个性化支持，可以选择两种颜色和两种听筒款式。

此外，显示屏还支持从右到左的语言显示，可满足全球客户的语言本地化需求。

Cisco Unified IP Phone 6921同时也更加节能环保，能够更好地支持客户的绿色计划。

深层睡眠模式能够显著降低能耗。

在这一模式下，Cisco Unified IP Phone 6921在非办公时间的功耗，比正常工作时间内电话处于空闲状态时的功耗最多可以减少50%。

此外，重新研磨和可回收的塑料也提供了更加环保的解决方案。

特性与优势表1到6显示了电话的特性和其它相关信息，表7显示了订购信息。

表1.特性与优势特性优势发光保持键当按下保持键以保持一个呼叫时，按键灯变亮，直至重新开始保持的呼叫。

当一个呼叫处于保持状态下，有新的呼叫进入时，按键将闪烁。

如果没有呼叫处于保持状态，按键灯关闭。

发光菜单键当按下菜单键以查看语音邮件消息、呼叫记录、网络设置、用户偏好、企业目录和XML服务时，按键灯变亮。

在菜单项保持活动状态期间，该按键灯始终亮起。

发光消息等待指示器当有新的语音邮件时，按键灯变亮，灯光在电话底座和听筒上都明亮可见。

当您开始处理新的语音邮件时，按键灯自动关闭。

计算机网络网络电话随着Internet的不断发展壮大，基于IP技术的各种应用迅速发展。

其中网络电话是近几年兴起的、极具挑战性的通信技术。

网络电话又称为IP Phone、Internet Telephone、宽带电话或VoIP（Voice over Internet Protocol）。

它是建立在Internet的基础上发展的新型数字化传输技术，在IP网上通过TCP/IP 协议实现的一种电话应用。

IP Phone最早的产品源于1995年，当时开发商们推出了一些基于计算机平台的软件产品。

如Vocaltec的IP Phone、Netspeak公司的Web Phone及后来的Cooltalk等。

IP Phone可以在Internet上实现实时的语音传输服务，和传统电话业务相比，它具有更大的优势和更广阔的市场前景。

现在，IP Phone不仅可以提供PC-to-PC的实时语音通话，而且可以提供PC-to-Phone、Phone-to-Phone的实时语音通信。

IP电话系统是由一系列组件构成，其中包括终端、网关、关守、网管服务器、计费服务器等。

Internet网关提供Internet和电话网之间的接口，用户通过PSTN本地环路连接到Internet的网关，网关负责语音信号的数字化处理、压缩编码打包的工作，使其成为可以再Internet上传输的分组语音信号，然后通过网络传输到被叫用户的网关端，由被叫端得网关进行分组数据的解包、解压和解码的工作，以将数字信号还原成为可被识别的模拟语音信号，然后在通过PSTN传送到被叫方的终端，让对方接收到信息。

这样就完成了一个完整的电话到电话的IP电话的通信过程，如图9-8所示。

图9-8 IP Phone工作过程。

酒店电话机创新领导品牌使用说明产品型号：IP20山东比特智能科技股份有限公司ISO9001质量管理体系ISO14001环境管理体系认证企业制造：山东比特智能科技股份有限公司地址：山东省日照市日照北路1号276800总传网址：E-mail:*********************版本：V3本说明描述内容，以实际产品为准。

如有变动，恕不另行通知。

为了您能更好地使用本产品，使用前请仔细阅读。

一、产品简介IP Phone是在数据通信网络上传送语音信息的VoIP设备，IP20系列话机是专为酒店使用环境设计，采用高速数字信号处理及各项专利技术。

音质清晰，功能丰富，性能稳定，并辅以新颖的外观设计，具有较强的视觉冲击，可以满足酒店对于话机的多样化需求。

1、具有闭音、闪断、重拨功能。

2、支持信息留言灯指示及提取。

3、手柄音量可5级调节。

4、支持DHCP/Static IP方式获得IP地址。

5、支持PCMU,G.723.1,G.729a/b PCMA语音编解码算法。

6、支持RFC2833,SIP INFO等DTMF传送方式。

7、支持IEEE802.1Q标准，IEEE802.3af协议。

8、支持SIP协议的相关标准。

9、可通过HTTP方式升级程序。

10、动态语音检测；舒适噪声生成；语音缓冲技术。

11、集成Poe供电功能，方便接入安装。

三、电话机安装及使用注意事项1、话机壁挂安装说明按图示壁挂孔尺寸（上下相间55毫米）在墙上拧入平头螺丝，尾部需突出墙壁少许。

将话机挂在突出的螺丝尾部上。

2、支架的安装与拆卸安装方法拆卸方法3、话机网线安装网线一端连接到话机底座的WAN口，另一端连接到具备POE供电功能的宽带路由器等接入设备的LAN端口。

4、手柄的摘取5、电话机应安装在干燥清洁的地方，避免受潮影响使用效果。

6、话机应防火、防泼溅、防震，表面灰尘可软布擦拭干净，不得使用化学溶剂。

四、按键及功能接口说明图1IP20话机面板示意图1112图2IP20话机底座示意图1、REDIAL键2、MSG键3、FLASH键4、▼（音量-）5、MUTE键6、▲(音量+)7、数字键8、支架9、底座10、手柄绳插座11、WAN口12、网线五、通过Web页面配置话机1、浏览器设定当话机与PC都成功连上网络后，在PC上双击图标打开IE浏览器；输入话机IP地址（挂机状态下，按话机的MUTE键播报本机的IP地址）。

SIP-T33GEntry-level IP Phone with 4 Lines & Color LCDAn entry-level color screen IP phone with high performance, Y ealink SIP-T33G offers support for 4 lines and includes local 5-way conferencing. For its fashionable appearance as well as an extra-large 320x240-pixel color display with backlight, it brings comfortable operation experience and clear visual experience for users. Designed with a new powerful chip, it helps greatly improved work efficiency. Additional features include a dual-port Gigabit Ethernet with integrated PoE, EHS35 support for Y ealink wireless headset, and adjustable multi-angle stand support. These features allow the SIP-T33G to be a high-quality but cost-effective classic IP phone that maximizes productivity in both small and large office environments.Key Features and BenefitsStronger Performance, More PossibilitiesEquipped with powerful chip, the T3 series owns a stronger computing ability and more upgraded functions, which ensures a higher productivity and smoother office experience. Due to great performance, T3 series is capable to extend more services for different business demands.Superior HD Audio, Better CommunicationThe Y ealink T3 series provides distraction-free communications with industry leading Smart Noise Filtering Technology, which delivers excellent sound quality without extraneous noises and allows fluent conversations.Classic Design, Practical DetailsDesigned by Y ealink original team, T3 series inherits the design concept of Y ealink IP phone family. The advanced design including modern appearances and ergonomic details enables easier and friendly operation experience to users.All in One Platform, Convenient ManagementProven reliability and integrations for Y ealink Device Management Platform, installed the unified firmware, T3 series is simple to deploy and manage, which allows a significant reduction in the operation and maintenance cost.• Y ealink HD Voice• 2.4” 320 x 240-pixel color display with back-light• Dual-port Gigabit Ethernet• PoE support • Opus codec support • Up to 4 SIP accounts • Local 5-way conferencing• Support EHS Wireless Headset • Unified Firmware • Support YDMP/YMCS • Stand with 2 adjustable angles •Wall mountableUnified FirmwareColor ScreenElegantIndustrial DesignEHSDevice ManagementHDOpus5-wayConferencingYEALINK NETWORK TECHNOLOGY CO., LTD.Email:********************:SpecificationsPC Connection Power Adapter (DC 5V)Learn MoreT o find out how Y ealinksolutionscanhelpyourorganization,*************************************************.Email:********************:About YealinkY ealink (Stock Code: 300628) is a global-leading provider of Unified Communication & Collaboration Solutions specialized in video conferencing, voice communications, and collaboration, dedicated to helping every person and organization embrace the power of "Easy Collaboration, High Productivity".With best-in-class quality, innovative technology, and user-friendly experiences, Y ealink is one of the best providers in more than 140 countries and regions, ranks No.1 in the global market share of IP Phone, and is the T op 5 leader in the video conferencing market (Frost & Sullivan, 2021).For more information about Y ealink, click here .CopyrightCopyright © 2022 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO., LTD.All rights reserved. No parts of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, photocopying, recording, or otherwise, for any purpose, without the express written permission of Y ealink(Xiamen) Network T echnology CO., LTD.Technical SupportVisit Y ealink WIKI (/) for firmware downloads, product documents, FAQ, and more. For better service, we sincerely recommend you to use Y ealink Ticketing system (https://) to submit all your technical issues.YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD.Web: Addr: No.1 Ling-Xia North Road, High Tech Park,Huli District, Xiamen, Fujian, P .R.CCopyright©2022 Y ealink Inc. All rights reserved.。

英语单词iphone是什么意思英语单词iphone是什么意思iphone这个单词，想必很多人都不知道它的中文意思吧?为此店铺为大家解释英语单词iphone的中文意思。

英语单词iphone的意思苹果手机;iphone：internet phone; 网络电话，IP电话(VocalTec 公司开发)1. 网络电话：从技术上讲,利用INTERNET上所提供的电子邮件(E-mail)、电子宣布版(BBS)、网络寻呼机( ICQ)、网络实时交谈(IRC)、网络会议(NetMeeting)、网络电话(IPHONE)等工具,既可以实现问卷调查,也可以实现访谈调查.2. 端：3G终端应用开发工程师工作职责:开发基于移动终端的3G 应用,负责移动终端(iphone)的互联网应用开发,测试,负责web服务器上和第三方应用集成的开发,部署和管理,后台数据库应用的开发配置和管理,网络层应用开发调试,参与系统管理,3. 手机：听说iPhone不好啦,什么手机(iPhone) 玩游戏会死机拉,根本就在放P,又或者他根本就是在用山寨机.. 什么都不懂就在那吹,还有1个电池又了,不能拿出?iPhone 的电池至少用上它个3~5年,哪那么容易坏!你以为苹果的东西弄假?4. 最佳新电子小产品/设备:苹果：最佳设计公司:SmugMug; | 最佳新电子小产品/设备:苹果iPhone; | 最佳商业模式:Zazzle;iphone的双语例句1. Favorites can be saved and enlarged to the size of the iPhone screen for easier viewing.收藏夹可以保存并可以扩大到苹果手机屏幕的尺寸，以方便浏览。

2. A study from the university of Nottingham found that people who ate more than five apples a week had improved lung function, less wheeziness and fewer asthma-like symptoms.诺丁汉大学研究显示，每星期吃五个苹果以上的`人，肺会更加健康，而且不容易得气喘。

随着光网络的飞速发展和数字传输技术的应用，原来在数据通信网中被视为应用“瓶颈”的带宽和服务质量等问题一一得到解决，推动了IP技术的飞速发展，带动各种应用向IP靠拢，IP电话（又称IP PHONE或VoIP）业务就是其中一个典型的应用。

一、IP电话的概念IP电话是一种利用Internet技术或网络进行语音通信的新业务。

从网络组织来看，目前比较流行的方式有两种：一种是利用Internet网络进行的语音通信，我们称之为网络电话；另一种是利用IP技术，电信运行商之间通过专线点对点联结进行的语音通信，有人称之为经济电话或廉价电话。

两者比较，前者具有投资省，价格低等优势，但存在着无服务等级和全程通话质量不能保证等重要缺陷。

该方式多为计算机公司和数据网络服务公司所采纳。

后者相对于前者来讲投资较大，价格较高，但因其是专门用于电话通信的，所以有一定的服务等级，全程通话质量也有一定保证。

该方式多为电信运行商所采纳。

IP电话与传统电话具有明显区别。

首先，传统电话使用公众电话网作为语音传输的媒介；而IP电话则是将语音信号在公众电话网和Internet之间进行转换，对语音信号进行压缩封装，转换成IP包，同时，IP技术允许多个用户共用同一带宽资源，改变了传统电话由单个用户独占一个信道的方式，节省了用户使用单独信道的费用。

其次，由于技术和市场的推动，将语音转化成IP包的技术已变得更为实用、便宜，同时，IP电话的核心元件之一数字信号处理器的价格在下降，从而使电话费用大大降低，这一点在国际电话通信费用上尤为明显，这也是IP电话迅速发展的重要原因。

二、IP电话的基本原理IP电话（又称IP PHONE或VoIP）是建立在IP技术上的分组化、数字化传输技术,其基本原理是：通过语音压缩算法对语音数据进行压缩编码处理,然后把这些语音数据按IP等相关协议进行打包,经过IP网络把数据包传输到接收地,再把这些语音数据包串起来,经过解码解压处理后,恢复成原来的语音信号,从而达到由IP网络传送语音的目的。

ENCRYPTION REFERENCE GUIDE March 2021 | 3725-34016-001A Poly Rove DECT IP PhoneThe following table presents product capabilities which are supported, but not necessarily required. Requirements will vary based on each unique customer environment.802.1X Supplicant AuthenticationConfidentialityIntegrity Allows product to authenticate to aLayer 2 switch that is using 802.1Xfor authenticationEAP-MD5 (RFC 3748)TLS 1.2,1.1,1.0Encrypted 802.1X MD5 password Confidentiality The 802.1X MD5 password isencryptedPassword is stored encrypted in non-volatile memory (NVS)SIP Authentication Authentication Provides authentication of theproduct’s SIP user agent credentialsto the SIP Proxy/Registrar Basic and Digest authentication (RFC 2617)SIP TLS AuthenticationConfidentialityIntegrity Allows encrypted connection withPBX (2-way authentication).TLS 1.2, 1.1, 1.0LDAP Directory Client AuthenticationConfidentialityIntegrityProvides enterprise directoryinformation allowing product toadd participants to conferences byname from an enterprise directoryserver.TLS 1.2, 1.1, 1.0Code signing AuthenticationConfidentialityIntegrity Only allows firmware update withan image, which has been signedby a trusted source.Part of firmware update process.HTTPS client used for firmware update AuthenticationConfidentialityIntegrityRTX HTTPS client is only used forfirmware update. For all otherapplications, Poly HTTPS client isusedTLS 1.2, 1.1, 1.0Base web Server/Client implemented by Poly AuthenticationConfidentialityIntegrityHTTPS TLS 1.2, 1.1, 1.0Provisioning implemented by Poly AuthenticationConfidentialityIntegrityRetrieve configuration from remoteserverTLS 1.2, 1.1, 1.0Syslog TLS AuthenticationConfidentialityIntegrityEncrypted syslog Poly does not enable featurePLANTRONICS + POLYCOMSRTP AuthenticationConfidentiality Secure RTP-Master key identification of lengthup to 16 bytes-CRC check on master key and salt-SRTP session instantiation.-SRTP relay streams betweenbases in a chainInternal Secure storage Confidentiality The following data in non-volatilememory (NVS) is encrypted:-Production device certificate andprivate key-SIP authentication passwords-XSI authentication passwords-LDAP passwordEncoded data is written to NVS.Data is read from NVS andsubsequently decoded.Internal TREL Confidentiality “Tcp RTX Encapsulation Link”.Encryption of communicationbetween bases. RTX proprietary communication between bases in chainInternal Sync Manager Confidentiality Encryption of exchanged databetween bases.RTX proprietary datasynchronization between bases inchainDECT Authentication Used when registering wirelessDECT handsets and connectionsetup to the device.ETSI EN 300 175-7 - DSAA2DECT Data Integrity Used for data traffic encryptionsbetween handset and access pointDECT Standard Cipher (DSC)Get HelpFor more information about installing, configuring, and administering Poly/Polycom products or services, go to the Poly Online Support Center.Related Poly and Partner ResourcesSee the following sites for information related to this product.●The Poly Online Support Center is the entry point to online product, service, and solution supportinformation including Video Tutorials, Documents & Software, Knowledge Base, CommunityDiscussions, Poly University, and additional services.●The Polycom Document Library provides support documentation for active products, services, andsolutions. The documentation displays in responsive HTML5 format so that you can easily access and view installation, configuration, or administration content from any online device.●The Poly Community provides access to the latest developer and support information. Create anaccount to access Poly support personnel and participate in developer and support forums. You can find the latest information on hardware, software, and partner solutions topics, share ideas, and solve problems with your colleagues.●The Poly Partner Network are industry leaders who natively integrate the Poly standards-basedRealPresence Platform with their customers' current UC infrastructures, making it easy for you to communicate face-to-face with the applications and devices you use every day.●The Poly Services help your business succeed and get the most out of your investment through thebenefits of collaboration.Privacy PolicyPoly products and services process customer data in a manner consistent with the Poly Privacy Policy. Please direct comments or questions to ****************.Copyright and Trademark Information© 2021 Plantronics, Inc. All rights reserved. No part of this document may be reproduced, translated into another language or format, or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Plantronics, Inc.Plantronics, Inc. (Plantronics + Polycom, Now together as Poly)345 Encinal StreetPLANTRONICS + POLYCOMSanta Cruz, California95060Poly and the propeller design are trademarks of Plantronics, Inc. All other trademarks are the property of their respective owners.。

Cisco IP Phone硬件•Cisco IP Phone硬件概述，第1页•Cisco IP Phone7811，第2页•Cisco IP Phone7821，第3页•Cisco IP Phone7841，第4页•Cisco IP Phone7861，第5页•按键和硬件，第6页•术语差异，第9页Cisco IP Phone硬件概述Cisco IP Phone提供基于Internet协议(IP)网络的语音通信。

Cisco IP Phone的功能与数字业务电话十分相似，并允许您拨打和接收电话呼叫以及访问各种功能，例如静音、保留、转接、快速拨号和呼叫前转等。

此外，由于电话连接到您的数据网络，它还提供增强的IP电话功能，例如访问网络信息和服务以及可定制的功能和服务。

Cisco IP Phone7841支持千兆位以太网连接。

向电话线路键添加功能时，会受到可用线路键数量的限制。

您添加的功能不能超过电话上的线路键数。

表1:Cisco IP Phone7800系列和支持的线路键支持的线路键电话Cisco IP Phone78112Cisco IP Phone7821Cisco IP Phone78414Cisco IP Phone786116与其他网路设备类似，Cisco IP Phone 也必须进行配置和管理。

这些电话可编码G.711a-law 、G.711mu-law 、G.722、G.722.2/AMR-WB 、G.729a 、G.729ab 以及iLBC 编解码器；并解码G.711a-law 、G.711mu-law 、G.722、G.722.2/AMR-WB 、G.729a 、G.729ab 以及iLBC编解码器。

如果在Cisco IP Phone 附近使用蜂窝电话、移动电话、GSM 电话或双向无线电，则可能会产生干扰。

有关详细信息，请参阅干扰设备的制造商文档。

Cisco IP Phone 提供传统电话功能，例如呼叫前转和转移、重新拨号、快速拨号、电话会议以及语音留言系统访问。

All contents are Copyright © 1992–2006, 2008 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.Data SheetCisco Unified IP Phone 7941G-GEThe Cisco ®Unified Communications system of voice and IP communications products and applications enablesorganizations to communicate more effectively—enabling them to streamline business processes, reach the right resource the first time and impact the top and bottom line. The Cisco Unified Communications portfolio is an integral part of the Cisco Business Communications Solution—an integrated solution for organizations of all sizes which also includes network infrastructure, security, and network management products, wireless connectivity, and a lifecycle services approach, along with flexible deployment and outsourced management options, end-user and partner financing packages, and third-party communications applications.Providing unconstrained bandwidth to desktop applications, the Cisco Unified IP Phone 7941G-GE delivers the latest technology and advancements in Gigabit Ethernet voice-over-IP (VoIP) telephony, bringing network data and applications to users quickly with its Gigabit Ethernet port for integration with a PC or desktop server (Figure 1). “Feature identical” to the Cisco Unified IP Phone 7941G, this Gigabit Ethernet enhanced business IP phone provides two programmable backlit line/feature buttons and four interactive soft keys that guide a typical transaction user through call features and functions, and audio controls for high-quality duplex speakerphone, handset, and headset. The phone features a best-of-class large, higher-resolution grayscale pixel-based LCD for easy access to communication information, timesaving applications, and feature usage (Figure 2). It also helps customers and developers deliver more innovative and productivity-enhancing Extensible Markup Language (XML) applications and can provide double-byte languages to the display.Figure 1.Cisco Unified IP Phone 7941G-GE© 2006, 2008 Cisco Systems, Inc. All rights reserved. Figure 2. Close-Up of High-Resolution Display and Lighted Line KeysFEATURESThe Cisco Unified IP Phone 7941G-GE is dynamic, and it is designed to grow with system capabilities. Features will keep pace with new changes through software updates to the phone flash memory. Firmware changes can be downloaded from Cisco Unified CallManager and . No hands-on moves and changes are required with the phone—the user can simply pick up the phone and move to the new location anywhere on your network. The Cisco Unified IP Phone 7941G-GE provides many accessibility methods according to user preference. Table 1 gives features of the phone.Table 1.Features of Cisco Unified IP Phone 7941G-GE FeatureDescription MessagesThe phone offers direct access to voicemail. Directories The phone identifies incoming messages and categorizes them on the screen, allowing users to quicklyand effectively return calls using direct dial-back capability. The corporate directory integrates with theLightweight Directory Access Protocol Version 3 (LDAP3) standard directory.Settings The Settings feature key allows the user to adjust display contrast, select background images (ifavailable), and select from a large number of unique ringer sounds through the User Preference menu.Network Configuration preferences also can be set up (usually by the System Administrator).Configuration can be either automatically or manually set up for Dynamic Host Control Protocol (DHCP),Trivial File Transfer Protocol (TFTP), Cisco Unified CallManager, and backup Cisco Unified CallManagerinstances. Other available Settings submenus include Device Configuration and Security Configuration.Services The Cisco Unified IP Phone 7941G-GE allows users to quickly access diverse information such asweather, stocks, quote of the day, or any Web-based information using XML to provide a portal to an ever-growing world of applications, features, and information.Help The online Help feature gives users information about the phone keys, buttons, and features. The pixeldisplay allows for greater flexibility of features and significantly expands the information viewed whenusing features such as Services, Information, Messages, and Directory. For example, the Directory buttoncan show local and server-based directory information.Display The phone has a large, higher-resolution, graphical 4-bit grayscale display (320 x 222).Speakerphone, Mute, and Headset ButtonsThe phone offers high-quality speakerphone technology, including an easy-to-use speaker On/Off button,Microphone Mute button, and Headset button. These buttons are lit when active. For added security, theaudible dual tone multi frequency (DTMF) tones are masked when the speakerphone mode is used.Feature DescriptionEthernet Switch The internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100/1000BASE-T Ethernetnetwork through an RJ-45 interface with single LAN connectivity for both the phone and a co-located PC.The system administrator can designate separate VLANs (802.1Q) for the PC and Cisco Unified IPphones, providing improved security and reliability of voice and data traffic.Headset Port A dedicated headset port eliminates the need for a separate amplifier when using a headset. This featureallows the handset to remain in its cradle, making headset use simpler.Volume Control The convenient Volume Control button on the phone provides for easy decibel-level adjustments for thespeakerphone, handset, headset, and ringer. The handset is hearing aid-compatible (HAC). Additionalvolume control gain can be achieved using an inline handset amplifier such as Walker Equipment W-10and CE-100 amplifiers.Adjustable Foot-Stand The phone foot-stand is adjustable from flat to 60 degrees to provide optimum display viewing andcomfortable use of all buttons and keys. The foot-stand is keyed to match standard wall-jackconfigurations for wall mounting. Two optional wall-mount brackets are also offered, as noted later in thisdocument.Flexible Power Options The Cisco Unified IP Phone 7941G-GE supports IEEE 803.af Power over Ethernet (PoE). It also can bepowered locally with a power supply (part number CP-PWR-CUBE-3=). Note: The Cisco Unified IP Phone7941G-GE does not support Cisco Prestandard PoE.Multiple Ring Tones More than 24 user-adjustable ring tones are available.Americans with Disabilities Act (ADA) Features An HAC handset (meets ADA requirements) is available, as well as HAC compliance for magnetic coupling to approved HAC hearing aids. The dial pad is also ADA-compliant.Signaling Protocol Support The phone offers Skinny Client Control Protocol (SCCP) support.Codec Support G.711µ and G.729a audio compression codecs are available.QoS Options The phone supports differentiated services code point (DSCP) and 802.1Q/p standards.Security The phone supports manufacturing-installed digital certificates, device authentication, and encryption Language Support Support for more than 20 languages is built in.Configuration Options IP address assignment can be statically configured or configured through the DHCP client.Voice Quality Comfort-noise generation and voice activity detection (VAD) programming are performed on a systembasis.SPECIFICATIONSTable 2 gives specifications of the Cisco Unified IP Phone 7941G-GE.Table 2. Specifications of Cisco Unified IP Phone 7941G-GESpecification DescriptionDimensions (H x W x D) 82 x 10.5 x 6 in. (20.32 x 26.67 x 15.24 cm)Weight 3.5 lb (1.6 kg)Phone-Casing Composition Polycarbonate acrylonitrile butadiene styrene (ABS) plastic in textured dark gray color with silver bezel Power Requirements The phone supports IEEE 802.3af PoE (the phone is a Class 3 device); 48 VDC is required; it can besupplied locally at the desktop using an AC-to-DC power supply (part number CP-PWR-CUBE-3=).Use of the power supply also requires ordering one of the AC country cords listed in Table 6.© 2006, 2008 Cisco Systems, Inc. All rights reserved.TEMPERATURETable 3 gives temperature ratings for the Cisco Unified IP Phone 7941G-GE.Table 3. Temperature Ratings for Cisco Unified IP Phone 7941G-GETemperature Variable DescriptionOperating Temperature 32 to 104°F (0 to 40°C)Relative Humidity 10 to 95% (noncondensing)Storage Temperature 14 to 140°F (-10 to 60°C)CERTIFICATIONSTable 4 gives certifications for the Cisco Unified IP Phone 7941G-GE.Table 4. Certifications for Cisco Unified IP Phone 7941G-GECertification DescriptionRegulatory Compliance •CE markingSafety •Underwriters Laboratories (UL) 60950•Canadian Standards Association (CSA) C22.2 No. 60950•IEC 60950•EN 60950•AS/NZS 60950Electromagnetic Compatibility (EMC) •Federal Communications Commission (FCC) Part 15 (CFR 47) Class B •ICES-003 Class B•EN55022 Class B•CISPR22 Class B•AS/NZ 3548 Class B•VCCI Class B•EN55024•EN 50082-1•EN 61000-3-2•EN 61000-3-3Telecom •FCC Part 68 (CFR47) HAC•IC CS-03•Australia-as/ACIF S004, AS/ACIF S040•New Zealand PTC 220 Draft© 2006, 2008 Cisco Systems, Inc. All rights reserved.ORDERING INFORMATIONTable 5 gives ordering information for the Cisco Unified IP Phone 7941G-GE.Table 5. Ordering Information for Cisco Unified IP Phone 7941G-GEPart Number DescriptionCP-7941G-GE Cisco Unified IP Phone 7941G-GE, global, Gigabit EthernetCP-7941G-GE= Cisco Unified IP Phone 7941G-GE, global, Gigabit Ethernet, spareCP-7941G-GE-CH1 Cisco Unified IP Phone 7941G-GE for Channels with one station user licenseNote: All Cisco Unified IP phones require the purchase of a phone technology license, regardless of call protocol being used.POWER CORDSTable 6 lists the AC country power cords needed for the Cisco Unified IP Phone 7941G-GE.Table 6. AC Country Power CordsPart Number DescriptionCP-PWR-CORD-AP= Asia PacificCP-PWR-CORD-AR= ArgentinaCP-PWR-CORD-AU= AustraliaCP-PWR-CORD-CE= European communityCP-PWR-CORD-CN= ChinaCP-PWR-CORD-JP= JapanCP-PWR-CORD-NA= North AmericaCP-PWR-CORD-SW= SwitzerlandCP-PWR-CORD-UK= United KingdomACCESSORIESTable 7 lists optional accessories available for the Cisco Unified IP Phone 7941G-GE.Table 7. Optional Accessories for Cisco Unified IP Phone 7941G-GEPart Number DescriptionCP-LCKNGWALLMNT2= Locking wall-mounting kitCP-WALLMOUNTKIT= Nonlocking wall-mounting kitCP-PWR-CUBE-3= Local power adapter for sites where PoE is not available; refer to the Table 6, “AC Country PowerCords”, to select the correct regional power cord. CP-PWR-CUBE-3= is compatible with and canreplace CP-PWR-CUBE-2=.WARRANTYCisco Unified IP phones are covered by a Cisco Systems® standard one-year replacement warranty.© 2006, 2008 Cisco Systems, Inc. All rights reserved.CISCO UNIFIED COMMUNICATIONS SERVICES AND SUPPORTUsing the Cisco Lifecycle Services approach, Cisco Systems® and its partners offer a broad portfolio of end-to-end services to support the Cisco Unified Communications system. These services are based on proven methodologies for deploying, operating, and optimizing IP communications solutions. Upfront planning and design services, for example, can help you meet aggressive deployment schedules and minimize network disruption during implementation. Operate services reduce the risk of communications downtime with expert technical support. Optimize services enhance solution performance for operational excellence. Cisco and its partners offer a system-level service and support approach that can help you create and maintain a resilient, converged network that meets your business needs.© 2006, 2008 Cisco Systems, Inc. All rights reserved.。