what is dwdm in telecom

services mainly change the previous situation where only passive customer requirements are accepted, and actively investigate the market and contact the customer, understand customer requirements, provide proactive services and marketing, and add the system's customer Participation Function to encourage customers to provide self-service. This part is similar to the concept of CRM. Zhao hengli, general manager of Beijing Telecom's major account depart

There are currently 27 mobile phone number segments nationwide.There are 16 segments on the move: 134, 135, 136, 137, 138, 139, 147, 150, 151, 152, 157, 158, 159, 182, 187, 188. 147, 157, 188 is the 3G, the other is the 2G number segment.China Unicom has 7 types of segments: 130, 131, 132, 155, 156, 185, 186. 186 is the 3G (WCDMA) segment, the remainder

. In recent months, PHS traffic has declined significantly, and c's traffic has increased significantly, which means that the recent c's increment is likely to come from PHS's network-to-network. China Telecom's one-way practice has been achieved in the near future, but it has attracted the attention of its competitors. I am afraid it is actually protecting my PHS network-switching operations.Although China

Lee boss opened a small internet bar, in the telecommunications office 4M Telecom Broadband (ADSL access), but he returned home with IE browser test download speed but only 400kb/s about, and not too stable, to other people transfer file speed only more than 50 kb/s. But he asked his friend Zhang boss of 4M Telecom Broadband (fiber access) download and to other people file speed how many, Zhang Boss said, d

play a positive role in the progress of the times?No forward-looking and on-and-off, destined to be only the monopoly of the game. The ups and downs of carrier status have no practical significance for the mass consumers. What they need is a real sense of affordability, not a game of "rights." Perhaps the only way to change everything is to really break the curr

network, should establish a network emergency mechanism to ensure normal use. Some netizens suggest that telecom should set up a nationwide bulletin site. Foshan Citizen Zhao said, now is the real network era, in addition to mobile phone, people's daily contacts almost all online, work and entertainment can not be separated from the network, once a similar network failure, often unprepared, "do not know

How is China Telecom transforming?--On the change of the demand of enterprise clientsSince the internet began to flourish in a growing, rapidly growing, increasing number of apps, Courier opened the Hey shop ... No matter what the point is that all things are beginning to become internet, look at the operators? Seems t

directly mailed DVDs and expanded into the video stream service. To compete in availability and flexibility, Netflix has established a device partner and developer ecosystem around its video stream service. The ecosystem allows Netflix to serve more than 800 devices, and adds value through 80 thousand developers who use Netflix open APIs to try new methods and scenarios. In terms of effectiveness, the ecosystem is a new release channel, similar to Va

5G networks are expected to remain static, and only 30% of mobile users are expected. When 5G is used in self-driving, remote robot control, and other fields, it requires ultra-low end-to-end latency, which is much lower than the latency of smart phone wireless Internet access, usually within several milliseconds. Therefore, for different application fields, 5G networks are like Swiss Army knives.

Uncover the real speed of ADSL Users who often use ADSL, do you know the real speed of ADSL? With this question, we will expand the problem step by step.Many users report that,The download speed of ADSL does not reach the nominal 512 K. After the computer accesses the network through ADSL, a download speed indicator is displayed during download. The download speed shown above is generally 50 Kbyte/s.Left an

With the development of the network, VoIP services and unified communication platforms become more and more important. The SIP protocol is an exciting focus. Some may ask, what is the SIP protocol? What's better about it? Here we will go into more details. The Chinese meaning of the SIP protocol is the process initiali

What is a ping value and how the ping value is calculated PING (Packet Internet Grope), Internet Packet Explorer, a program for testing network connection volumes. Ping sends an ICMP The Echo requests the message to the destination and reports whether the desired ICMP echo response is received. It

-added services integrated management platform.OSS/BSS is the integration of telecom operators, information resources sharing support system, which is mainly composed of network management, system management, billing, business, accounting and customer service and other parts, the system through a unified information bus organically integrated. Not only can it hel

the focus of telecom operators, at present, there are a wide range of metropolitan area Network technology, which includes metropolitan area network based on SDH structure, metropolitan area network based on Ethernet structure, metropolitan area network based on ATM structure and metropolitan area network based on DWDM structure. In fact, SDH, ATM, Ethernet, WDM and other technologies are constantly absorb

The Internet bandwidth problem is already the main bottleneck affecting Internet development, in many webmasters, many webmasters asked this question: "What is the difference between dual-line Single IP address and dual-line Dual IP address? What is the difference between si

What is uyou?Uyou card is not mobile or Unicom, but a card of a virtual carrier.Virtual Network Operator (VNO-Virtual Network Operator) refers to the ability to possess certain or some types of capabilities (such as technical capabilities, device supply capabilities, and market capabilities) A partner that forms a cooperative relationship with a

What does the ADSL modem mean? often have netizens to consult this problem, ADSL modem is a modem, commonly known as "cat", users of ADSL broadband after (telephone line internet), must use ADSL modem this equipment, can normal internet. 　　Why do you use ADSL Modem? 　　ADSL Broadband is the transmission of signals through telephone lines, and the telephone line

The creation of virtual concept and the background of virtual operator In recent years, due to the rapid development of data service, voice service, video service and the improvement of communication network technology, all kinds of monopoly will be broken along with IP technology, especially VoIP technology becoming more mature and telecom opening up. The application of integrated voice, data and video services through packet networks has become mor

Label: style HTTP color Io ar use Java for strong 1. What is "service cluster "? What is "enterprise-level development "?Now that EJB is for "service cluster" and "enterprise-level development", we have to talk about what

1. What is "service cluster "? What is "enterprise-level development "? Now that EJB is for "service cluster" and "enterprise-level development", we have to talk about what is the so-ca