What are the telecom value-added services?

1, voice information

Provide users with voice information services through voice platform, such as 160 artificial auxiliary information station, 168 automatic voice service, 166 voice mail, etc.

Its services cover news, sports, science and technology, finance, securities, real estate, health care, entertainment, transportation, shopping guide, tourism, talent exchange, hot spot tracking and so on. These services are gradually transitioning to the national information network, database retrieval and other ways to achieve resource sharing.

2. Email address

Also known as email. The latest generation of e-mail box is message processing system (MHS), which can realize the interoperability between heterogeneous computers. E-mail provides users with a way to obtain and transmit messages, data, charts or other forms of written information, usually through packet-switched data networks, or through telephone networks or telex networks.

3. Video text

As an additional value-added service for telephone users, it can retrieve all kinds of text, image (color) information according to needs through the interconnection between the public telephone network and the database on the packet-switched network, and can also be used as the terminal equipment of e-mail.

4. Save and send faxes

It is a device that stores and forwards users' fax signals or has the function of fax retrieval information through a computer, and provides users with high-performance fax services.

Usually, private line or public packet network is used to provide busy retransmission, multiple access or broadcast transmission, timed transmission, voice prompt inquiry and fax/telex conversion for users on telephone network. Fax Store-and-Forward is a kind of non-real-time communication, and its circuit utilization rate can be increased by more than five times, so it is a promising service.

Step 5 search online

A data terminal or PC is connected with various information databases through a telecommunication network. With the support of retrieval software, users can obtain the required information and data conveniently and quickly. In addition to searching the database directly, users can easily find the required database through the intermediate computer system.

Its application range is very wide, such as scientific and technological information retrieval, news, finance, stocks, futures, flights, trains and other public services, and it is also used in various professional databases such as books, chemicals, light industry and petroleum.

6. Data exchange

It is also called "paperless trade" because computers are used for trade or information exchange in accordance with prescribed formats and protocols. It is the most modern means of trade in developed countries and has been adopted by many countries. The "Golden Gate" in the "Golden Word" Project implemented in China is the development and application of EDI in China.

7. Internet

Also known as the Internet. It is the largest computer internet in the world, and it is also an open value-added service by using the existing communication network and computer resources. In recent years, the network has developed from a scientific research and education network to a commercial network. At present, it has connected 150 countries and regions, more than 40,000 computer networks, nearly 4 million computers and more than 35 million users.

In order to meet the needs of domestic users, the Ministry of Posts and Telecommunications takes Beijing, Shanghai and Guangzhou as national entry-exit bureaus and connects with the Internet in the United States. Users can access China Internet Chinanet through telephone network, public packet switched network, e-mail system or special line to communicate with users at home and abroad.

On this network, users can be provided with e-mail, file transfer, database retrieval, remote information processing, data query, multimedia communication, electronic conference, image transmission and other services.

8. SMS service

SMS (Short Message Service) is the earliest and most popular short message service. The length of this short message is limited to 140 bytes, and it can be text.

Telecom service providers open sms channel to enterprises for commercial short message service, mainly including verification code short message, marketing short message and mass short message, which are used in short message platform, short message SDK, short message marketing, short message interaction and other business models.

9. Other business

Such as "200" telephone calling card service, "800" collect service, "400" calling and called shared payment service, virtual private network (VPN) service, centralized PBX service, etc. All belong to value-added services. There are also some new value-added services, such as relay service, video conference, video on demand (VOD) and so on, which are also developing vigorously.

Classification of telecom value-added services:

Value-added services can be roughly divided into two categories:

1, services in the form of value-added network (VAN).

Value-added network can make use of special equipment such as switches and computers in this department to form a private network with transmission equipment rented from public network to meet the needs of this department. For example, renting a fax store-and-forward network composed of high-speed information, a conference television network, a private packet switching network, a virtual private network (VPN), etc.

2. Services in the form of value-added services.

Refers to the services developed beyond the basic services (telephone and telegraph services) of the original communication network, such as data retrieval, data processing, electronic data exchange, e-mail, electronic directory search and electronic file transmission.