placed in floor distribution boxes according to the principle that Splitter is as close as possible to users. Obviously, this ideal layout highlights the inherent advantages of PON, but it will inevitably lead to the following problems: first, high-core optical cables are required from the central data center to the residential area, such as 3000 residential areas, in-16-core computing, nearly 200-core optical fiber cables are required. At present, o
Adsl modem initial address and user name and passwordTo debug these settings, You need to first set the IP address of the network card to the same network segment as the ADSL settings.1. In the address bar of the IE browser, enter the IP address 10.0.0.2 in the omnidirectional QL1680. The username is the default value when the admin leaves the factory: the password is qxcomm1680, And the administrator password is
Qxcommsupport2. In the address bar of
USB Modem Driver Design in linux-general Linux technology-Linux technology and application information. For details, see the following section. I recently wrote a usb modem driver for a linux system. Since I have been in touch with the linux system for a few months, I just got started with the driver. I don't know how to design it. I have read the source code of the usb serial port kernel for a while, I hav
detection, ② feet (RXD) receive data. ③ Pin (TXD) sends data. ④ foot (DTR) data Terminal ready, ⑤ foot (SG) signal ground, ⑥ foot (DSR) data device ready. ⑦-pin (RaS) request sent, ⑧ (CTS) clear send. ⑨ foot (RI) ringing indication. DB-9 male (PIN) head arrangement order for example with left, DB-9 female (hole) head in order such as right, pay special attention to the male pin number from sitting to right, the female head is from right to left . eia-rs-232c Standard, there are three send sign
The broadband error 651 is mainly due to the connection between the user terminal computer and the CNC station device. In general, there are four types of situations:
1, the network cable is not connected;
2, modem fault;
3, network card failure;
4, the modem itself set.
User Side Section
This is generally the problem (dial-up software, network card driver, USB cat drive, computer system, ADSL cat i
A Single-Mode Optical Fiber transmits only a single base mode optical fiber at a given working wavelength. It does not have mode dispersion, so the single-mode optical fiber has a very wide transmission band, used for long distance, large capacity transmission. The core of a single-mode optical fiber is very fine. The
Vswitch Optical Fiber ports are divided into many types, and their functions are quite different. Here we will mainly introduce some basic knowledge about common optical fiber ports of vswitches. Cascade uses both common ports and special MDI-II ports. A straight-through cable should be used when the two ports that are cascaded are normal ports (MDI-X) ports and MDI-II ports, respectively. Cross-cable shoul
Vswitch Optical Fiber port cascade connection mode and basic type when the two ports of mutual cascade are common port (that is, MDI-X) port and MDI-II port, should use a straight-through cable. Cross-cable should be used when both ports of mutual cascade are common ports (that is, MDI-X) or both are MDI-II ports. Whether it is 10Base-T Ethernet, 100Base-TX fast Ethernet, or 1000Base-T Gigabit Ethernet, the length of the cable used by the cascade swit
The optical fiber access technology is worth learning a lot. Here we mainly introduce the features of China's FTTH target market, this section describes the high investment in FTTH Network Construction from a development perspective, and avoids blindly requiring full-service access. So far, fiber-to-household fiber-to-home-FTTH has been widely used in Japan and t
With the rapid development of communication technology, telecom operators are constantly improving the transmission rate of single channels in WDM systems to meet people's needs for communication bandwidth. At present, a single wavelength WDM System with a transmission rate of 10 Gb/s is under construction, and a WDM System with a transmission rate of 40 Gb/s has entered our field of view.
At the same time as the transmission rate is improved, the communication system performs polarization mode
I. Introduction and background
In recent years, optical fiber communication systems have made great progress to meet the increasing bandwidth requirements.
The main factors limiting the performance of single-mode optical fiber (SMF) systems include attenuation, dispersion, and non-linearity, as well as recently noticed polarization mode dispersion (PMD ).
For a traditional single-mode optical
purchase of vrouters, vswitches, and other network devices is also very important.Internet cafes have diversified network application types and have high requirements on network bandwidth, transmission quality, and network performance. network applications must integrate advanced, multi-service, scalability, and stability, it not only meets customers' needs for simultaneous transmission of voice, video, and data over a broadband network, but also supports a variety of new business data processi
Principle and sensing process of Distributed Optical Fiber Temperature Measuring System
The Distributed Optical Fiber Temperature measuring system can be divided into three types based on the backward scattering principle: Based on Fourier scattering, based on Raman scattering, and based on Bayesian scattering. At present, the development is relatively mature, and some products are applied to engineering D
Hyper-v Server Virtual Fiber ChannelThe new virtual Fiber Channel (VFC) in Windows Server 2012/R2 enables Hyper-vclient to access the physical storage host bus adapter (HBA) installed on the Hyper-V Server ). Generally, Hyper-VPC is equipped with storage adapters. However, with the help of this new feature, all Hyper-V 3.0/4.0 clients with the corresponding O/S level can access the HBA and directly connect
In this article, we will introduce the user's optical fiber connector (SC), straight-through optical fiber connector (ST), fixed Optical Fiber Connector (FC) and LC optical fiber connector and their application, performance and terminal requirements. Unlike the BNC connector widely used in the/V industry,
The cabling system is widely used in multi-mode Z optical fiber due to a small number of trunk lines connected to the floor. in the horizontal direction, there is no suitable medium that can provide sufficient bandwidth, it also has the advantages of easy installation, low cost, and strong anti-interference ability. The new plastic optical fiber (POF) as the transmission media of the all optical
Many people on the internet use the COM port to connect to the mobile phone, use the mobile phone modem, use the AT command to send text messages, introduce the principles of PDU encoding, and write a ready-made class for reference and use.
Smspduclass. CLs
Option explicit
'Preserve the local variable of the attribute valuePrivate mvarsmsclen as integer local ReplicationPrivate mvarsmsctype as string' local copyPrivate mvarsmsc as string' local copyPr
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.