db25 to rj45

How about a ThinkPad w550s notebook? First, the appearance of details 1, small black classic design lighter and thinner workstation 2, the overall appearance of the ThinkPad w550s continued the classic design of small black products, the shell of the use of carbon fiber material, fuselage internal metal skeleton, the strength of the machine is still very considerable. Interface is more abundant than general pen electricity 3, the ThinkPad w550s interface configurati

) wirelessly, without affecting the capabilities of their wireless AP coverage Tp-link tl-wr541g+ 2 units Notebook Terminal: 2 units 1 Network Diagram 2 Network application diagram 3 Several modes of wireless router application 1.AP mode The model is simply to switch our wired network into a wireless network! And then connect to a variety of wireless terminals, such as laptops or desktops with wireless connections. Connect the phone with WiFi and so on.

Mercury MW300R Wireless router, now as long as 560 yuan, a very cheap wireless router, suitable for several users of the family! Users can use the network cable Connection number, it supports PPPoE, dynamic IP, static IP and other broadband access mode to meet the needs of different users. Can be used to build intranet sites, the built-in firewall can be IP, MAC, URL address, such as filtering, effective control of the network in the host's Internet access and Internet access time, and its occup

It is relatively easy to build a network, but to manage the network is a relatively cumbersome work. And don't say the various requests that the user gives you will keep you busy, only the network does not pass this fault is enough trouble to solve, because the cause of the network is too many, as long as we will be the fault of the Regulation class, or have the law to follow, now the title of computer small set to you detailed explanation. One, the connection led is not lit Observe the back s

is different access to the optical line, is the light signal. Optical signal conversion and interface protocol after the conversion of the router, he belongs to a wide area network access, that is, often said fiber access, as long as the presence of optical fiber in the place need to convert the light of the cat. Optical fiber transceiver is the conversion of photoelectric signal in LAN, but only signal conversion, there is no interface protocol conversion. Generally used in the park network l

QVM2100 is a high-level gateway product designed by the company for medium and large network scenarios that require high-speed and multiple secure access. Supports 300,000 online numbers, with a machine capacity of 1000 units, providing 4 Gigabit wide area network ports, 8 gigabit LAN ports, 1 DMZ gigabit ports, Applicable to a variety of different network architectures, can fully meet the current network applications to the performance of the router requirements and provide sufficient capacity

Ariton HT-842R is a low-cost four-port IP voice gateway that can work with most operators ' H.323 or SIP,IP telephony systems and does not need to be upgraded when switching between SIP and H.323 protocols. Provides 4 standard 24V FXS telephone interface, can cooperate with each kind of standard telephone, cordless telephone to use. The Voice gateway does not need to connect the computer to be able to work, 4 standard 24V FXS RJ11 telephone interface, can cooperate each kind of standard

Channels can be compared to RJ45 network cables, a total of 11 available channels. Considering that there are overlapping regions between the adjacent two wireless APs, in order to ensure that the signal channel used in this part of the region can not be covered by each other, the wireless AP with the specific signal covering each other must use different channels, otherwise it is easy to cause the signal of each wireless AP to interfere with each oth

WIZ550S2E is a gateway module that provides RS-232 to TCP/IP protocol functionality. And can be based on TCP/IP and Ethernet network equipment management, remote measurement, simply use the RS-232 serial port to connect the current device. In other words, WIZ550S2E is a protocol converter that sends data through the serial port in TCP/IP data format, and vice versa.Characteristics Plug and Play serial to Ethernet module * Simple and quick to add network function* Provision of firmw

Often meet someone in the QQ group to ask about the product of Huawei's specific model number of the meaning of today's summary of the content to be posted for your reference. LI (Lite software Image) indicates that the device is a weak feature version. SI (Standard software Image) indicates that the device is a standard version and contains the underlying features. EI (Enhanced software Image) indicates that the device is an enhanced version and contains some advanced features. HI (Hyper softwa

frequency, but also considered medium. Core quantity is dual core, three level cache is 3MB. For more information on the processor, see: Intel Pentium G2020 processor details. Motherboard, Pan is IH61MC-Q3 motherboard for the Micro ATX Small board design, based on the B3 Stepper H61 single chip design, perfect support for the latest second-generation core I processor. The motherboard uses the 2+2 phase power supply, matches the entire solid state capacitor and the closed inductance. The mother

Some knowledge about storageAccording to the different transmission protocols, the network card can be divided into three kinds, one is the Ethernet card, the second is the FC network card, the third is the iSCSI network card. Ethernet Card: The Scientific name Ethernet Adapter, the transmission protocol for the IP protocol, generally via fiber optic cable or twisted pair with Ethernet switch connection. The interface types are divided into optical and electrical ports. Optical ports ar

Tag: pos value reserved ASD limited receiver bit get mod 1. Physical LayerPhysical Layer Protocol: RJ45, CLOCK, IEEE802.3 (Repeater, hub) Role: Transmission of bits via media, determination of mechanical and electrical specifications (bit bit) 1.1 Communication Fundamentals Data-the entity that transports the message. Signal (signal)--the electrical or electromagnetic performance of the data. Analog signa

are configured with 3 Seagate Barrucade 7200.7 120GB SATA interface hard drives and a RAID 5 mode disk array with ARC1120 SATA RAID cards. The optical drive device is a normal CD-ROM drive. There is no USB interface and no positioning indicator on the front panel, which will be slightly inconvenient to use. Super-yi 2806VS server Back IO panel provides 1 PS/2 mouse interface, 1 PS/2 keyboard interface, a serial port, a VGA interface, a Gigabit network interface (Intel 82

E1 cable, so can only use 100M cable instead, as long as the line does not do too long, should not be a problem.The interface of the E1 card is the Rj-48 interface. RJ48 is the interface for serial lines such as T1/e1, and the RJ45 of Ethernet is the same. For different transmissions, the signal definition is not the same, and I do this test by T1/e1 Trunk and Digital Voice Port (RJ-48). The following are the signals of each stitch: Pin1 Signal 1 rx

1. First confirm if there is a network card Check the computer peripheral interface for RJ45 network cable interface. Generally in the back. As shown in the following illustration: 2. If the computer is configured with a network card, see "Device Manager" has no network card equipment Right-click on the Desktop Small computer icon, select "Manage", select "Device Manager", and see if there is a network card device under the net adapter.

The merchant provides the correct method: General connection method: Orange White 1 orange 2 green White 3 Blue 4 blue white 5 green 6 brown white 7 Brown 8 Cross Connect Method: Green White 3 Green 6 orange White 1 Blue 4 blue white 5 Orange 2 brown white 7 Brown 8. 1. How to use: The Crystal head at both ends of the network cable plug into the main tester and the remote test end of the RJ45 port, the switch to "on" (s for slow gear), then the maste

cabling technology for high-rise office building network integrated design. Technical features based on PON technology The PON system consists of optical circuit terminal (OLT), Optical Network Unit (ONU) and optical distribution network (ODN), which uses topological structures with dots to many points. Passive refers to all of the passive devices and optical fibers from Olt to ONU, and does not require any power source equipment. Pon All Optical Network has three networks in one business cap

, the back plate bandwidth and swallow rate are considered synthetically. 3. Port Rate In addition to backplane bandwidth, throughput, and so on, the port rate is a measure of the switch is an important indicator. Now the port speed is: 10M, 10/100m, 1000M, 10/100/1000m. The corresponding interface physical characteristics are also different. When choosing a switch specifically, pay special attention to the higher port generation value of the high speed port. In the absence of immediate expli

ONACCESSH1004 Optical Network unit of each information point, while providing users with a duplex 100M speed Internet access, CATV broadcast signal and telephone access The ONACCESSH1004 Optical Network Unit provides a single mode single fiber interface, a CATV 75ω coaxial cable RF interface and 4 10m/100m RJ45 interface, a RJ11 ordinary telephone interface, connected with the OnAccess2224 video multiplexing fiber switch CATV signal Transmission adop