gsm pud模式发送短信_GSM的完整形式是什么？-蒲公英云

gsm pud模式发送短信

全球移动通信系统 (Global System for Mobile Communication)

GSM is an abbreviation of the Global System for Mobile communication. It is a system standard leveled up for the second generation (2G) digital cellular networks designed by European Telecommunication Standards Institute (ETSI) to define protocols. For the first generation (1G) cellular networks, It was a substitution. At the beginning of the 1970s, the aim of designing and creating GSM derived from a radio system of cell-based mobile at the Bell Laboratories.

GSM是“全球移动通信系统”的缩写 。它是由欧洲电信标准协会(ETSI)设计的第二代(2G)数字蜂窝网络升级的系统标准，用于定义协议。对于第一代(1G)蜂窝网络，它是一种替代。 1970年代初，贝尔实验室(Bell Laboratories)设计和创建GSM的目的是基于小区移动无线电系统。

Working in over 200 countries worldwide, GSM is an unclose, digital cellular radio network. It comprises signals over a narrow range of frequencies by using a time division multiple access (TDMA) technology. It is increasing in America and Asia and takes under nearly entire Western Europe. It can also be used for data computing and sending text messages and not only for voice calls. To transmit or receive emails, faxes, browse the internet, check security, etc., a user can link or attach his GSM-enabled smartphone with his laptop.

GSM是不封闭的数字蜂窝无线电网络，在全球200多个国家/地区工作。通过使用时分多址(TDMA)技术，它可以在狭窄的频率范围内包含信号。它在美洲和亚洲正在增长，并覆盖了几乎整个西欧。它不仅可以用于语音呼叫，还可以用于数据计算和发送文本消息。要发送或接收电子邮件，传真，浏览互联网，检查安全性等，用户可以将其支持GSM的智能手机与笔记本电脑链接或连接。

GSM full form

Image source: https://99designs.com/logo-design/contests/create-next-logo-gsm-259422

图片来源：https://99designs.com/logo-design/contests/create-next-logo-gsm-259422

Following are the three different frequencies on which the GSM standard works,

以下是GSM标准工作的三种不同频率，

900 MHz: By the original GSM system, it was used.

900 MHz ：使用原始的GSM系统。
1800 MHz: To hold up the increasing number of subscribers, it was used.

1800 MHz ：为了容纳越来越多的订户，使用了它。
1900 MHz: In the US, it is mostly used.

1900 MHz ：在美国，它是最常用的。

GSM支持的数据应用 (Data applications supported by GSM)

With a computer system, when a user link or attach his GSM phone, GSM gives the following services,

在计算机系统中，当用户链接或连接其GSM电话时，GSM提供以下服务：

Internet:

互联网 ：

GSM makes available for use the most appearing and vigorous wireless data connectivity to access the internet.

GSM提供了最强大的无线数据连接来访问Internet。
Mobile Fax:

手机传真 ：

With GSM, a user can transmit and receive faxes to any location where GSM function is accessible.

使用GSM，用户可以在可以访问GSM功能的任何位置发送和接收传真。
Secured LAN access:

安全的局域网访问 ：

GSM makes available for use secured access for corporate LAN. It converts into code the air connections and gives extra security for confidential emails and faxes.

GSM使企业局域网的安全访问成为可能。它将空中连接转换为代码，并为机密电子邮件和传真提供了额外的安全性。

GSM的优势 (Advantages of GSM)

For its clients, it makes available for use roaming worldwide to roam all over the world, Since GSM service is acquired over 200 countries.

对于其客户，由于GSM服务已在200多个国家/地区获得，它可以在全球范围内使用漫游漫游到全世界。
Its devices and services cannot be simply and easily reproduced and that shows GSM is highly secured.

它的设备和服务无法简单轻松地进行复制，这表明GSM具有高度的安全性。
It has wide handling throughout the world.

它在世界各地具有广泛的处理能力。
It has clear voice calls and systematic use of the spectrum.

它具有清晰的语音通话和频谱的系统使用。

GSM的缺点 (Disadvantages of GSM)

Due to interference limitation in bandwidth happens which may cause because of too many users share the same bandwidth.

由于干扰，带宽限制会发生，这可能是因为太多的用户共享同一带宽。
It may cause electronic interference.

可能会引起电子干扰。
It has up to 35 km fixed range for max call sites which makes it very limited.

它的最大呼叫站点的固定范围可达35 km，这使其非常受限制。