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英国留学生计算机专业论文 [8]

论文作者:www.51lunwen.org论文属性:短文 essay登出时间:2014-08-06编辑:felicia点击率:14681

论文字数:4409论文编号:org201408051325197934语种:英语 English地区:中国价格:免费论文

关键词:拓扑结构计算机系统topologynetwork systemmedium

摘要:本文是一篇计算机留学论文。拓扑结构在现代计算机系统中运用越来越广泛。拓扑结构有很多不同的类型。主要分为两种类型:总线拓扑和点对点拓扑结构,点对点拓扑又包含环型拓扑,星状拓扑,此外点对点拓扑还包含网状拓扑(网格拓扑)。本文简要叙述了拓扑结构是如何操作的。

ange (PBX) provides the following features and functions:

Multi-Location Functionality PBX system can take full access from more than one location on a central line.


One Number Calling-Find-To if need to call the other extension phone,


Voicemail via Email Digital voicemail file is sent via Email. It is also easy to reply and forward voicemail messages.


Advanced Phone System Menus PBX provide a multi-level menu for a variety of call-routing options. The whole system is set up with scheduling after-hours operation, posting holiday attendant messages, and dealing with special situations. Menus are provided with easy functional interface and secure from unauthorized accesses.


Live Receptionist with Backup Menu PBX supports live receptionist by answering from calls when no one is answer.


Caller ID Control PBX can control the outgoing call by making a call log and call history to redial and checking the call history from unauthorized calls.


Incoming Caller ID PBX manages the incoming calls by identifying and displaying the incoming calls and making memory log for the incoming callers.


Call Record PBX can record the conversation on phone line and sent automatically to the email box after the call ends.


Busy status light If an extension phone is used, a busy status light status light will indicate who is using the phone.


Direct Inward Dial For a normal extension phone line, one of the incoming phone calls is reached to the reception first. Then dial extension number to reach to specific extensions. But in PBX the incoming phone can dial directly to the specific destinations


Fax Handling - PBX manage the fax incoming and outgoings through the main line to the extension destinations.


VOIP

Voice over internet protocol (VOIP) available the following functions and features:

Call forward If an incoming call is accepted, it can forward to the particular extension destination.


Voicemail service If no one is answer the incoming calls, it can transform into voice mail and can replay that conversations.


Three-way calling During the conversation on phone line, the third call that permits for the conversations is allow to convert into three way calling.


Caller ID As in PBX network, VOIP can display the incoming and outgoing calls and can record these calls to redial or look back.


Messaging service Even an email or text message on line is sent into the VOIP system via the internet. It can also send back merely.


Database service VOIP can also transmit data exchange over the internet into the main system. This also provides the update news and advertising listings.


Video conferencing Using PCs, VOIP also provides the video chatting and conferencing with peoples more than two person.


Fax handlings Like PBX fax messages can send over the phone line and controls the message论文英语论文网提供整理,提供论文代写英语论文代写代写论文代写英语论文代写留学生论文代写英文论文留学生论文代写相关核心关键词搜索。

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