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A Quick Understanding of FTP/SFTP/FTPS/TFTP File Transfer Protocol (FTP) The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files from a server to a client using the Client–server model on a computer network. FTP is built on a client-server model architecture and uses separate control and data connections...

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E-Lins Antenna Catalog Usually magnetic antenna is used for our 3G/4G routers. It has 3dbi, 5dbi, 7dbi, 9dbi and 11dbi. 3dbi is in standard packing, if router will be applied in rural place, high gain antenna is for optional.   Sometimes, you don't want this long antenna with cable, you also can choose rubber antenna, which is...

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E-Lins FAQ -- POE Q: Does your router support POE option? How does it work? A: Yes, E-lins H685 series, H700 series and H720 series routers support POE option. It works as following chart.  

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Antenna Gain For a better understanding about antenna gain, you can go through this article. Antenna gain is often quoted with respect to a hypothetical antenna that radiates equally in all directions, an isotropic radiator. This gain, when measured in decibels, is called dBi. Conservation of energy dictates that high gain antennas...

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Orange helps Sensile Tech monitor Oil & Gas with M2M About Sensile TechnologiesSensile Technologies is a forerunner in the Internet of Things (IoT) market and a leading provider of solutions for remote monitoring of tank levels for the oil and propane industry. Founded in 1999 and based in Morges, Switzerland, Sensile Technologies has extensive experience in high-quality...

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A Quick Understanding of FTP/SFTP/FTPS/TFTP

文章目录 : 伊林思产品FAQ, 其他, 技术相关

File Transfer Protocol (FTP)

The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files from a server to a client using the Client–server model on a computer network.

FTP is built on a client-server model architecture and uses separate control and data connections between the client and the server. FTP users may authenticate themselves with a clear-text sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS (FTPS). SSH File Transfer Protocol (SFTP) is sometimes also used instead; it is technologically different.

 

SSH File Transfer Protocol(SFTP)

The SSH file transfer protocol (chronologically the second of the two protocols abbreviated SFTP) transfers files and has a similar command set for users, but uses the Secure Shell protocol (SSH) to transfer files. Unlike FTP, it encrypts both commands and data, preventing passwords and sensitive information from being transmitted openly over the network. It cannot interoperate with FTP software.

In computing, the SSH File Transfer Protocol (also Secure File Transfer Protocol, or SFTP) is a network protocol that provides file access, file transfer, and file management over any reliable data stream. It was designed by the Internet Engineering Task Force (IETF) as an extension of the Secure Shell protocol (SSH) version 2.0 to provide secure file transfer capabilities. The IETF Internet Draft states that, even though this protocol is described in the context of the SSH-2 protocol, it could be used in a number of different applications, such as secure file transfer over Transport Layer Security (TLS) and transfer of management information in VPN applications.

This protocol assumes that it is run over a secure channel, such as SSH, that the server has already authenticated the client, and that the identity of the client user is available to the protocol.

Simple File Transfer Protocol

Simple File Transfer Protocol (the first protocol abbreviated SFTP), as defined by RFC 913, was proposed as an (unsecured) file transfer protocol with a level of complexity intermediate between TFTP and FTP. It was never widely accepted on the Internet, and is now assigned Historic status by the IETF. It runs through port 115, and often receives the initialism of SFTP. It has a command set of 11 commands and support three types of data transmission: ASCII, binary and continuous. For systems with a word size that is a multiple of 8 bits, the implementation of binary and continuous is the same. The protocol also supports login with user ID and password, hierarchical folders and file management (including rename, delete, upload, download, download with overwrite, and download with append).

FTPS

Explicit FTPS is an extension to the FTP standard that allows clients to request FTP sessions to be encrypted. This is done by sending the “AUTH TLS” command. The server has the option of allowing or denying connections that do not request TLS. This protocol extension is defined in RFC 4217. Implicit FTPS is an outdated standard for FTP that required the use of a SSL or TLS connection. It was specified to use different ports than plain FTP.

Trivial File Transfer Protocol(TFTP)

Trivial File Transfer Protocol (TFTP) is a simple, lock-step FTP that allows a client to get a file from or put a file onto a remote host. One of its primary uses is in the early stages of booting from a local area network, because TFTP is very simple to implement. TFTP lacks security and most of the advanced features offered by more robust file transfer protocols such as File Transfer Protocol. TFTP was first standardized in 1981 and the current specification for the protocol can be found in RFC 1350.

 

 (Information collected from Wekipedia)

E-Lins Antenna Catalog

文章目录 : 产品文章, 其他

Usually magnetic antenna is used for our 3G/4G routers. It has 3dbi, 5dbi, 7dbi, 9dbi and 11dbi. 3dbi is in standard packing, if router will be applied in rural place, high gain antenna is for optional.

 

wifi吸盘1

Sometimes, you don’t want this long antenna with cable, you also can choose rubber antenna, which is small and powerful.

rubber-antenna1

We also have wall mounted antenna, panel antenna, glass fiber antenna and so on, for further information, please check:

http://www.e-lins.com/EN/download/E-Lins_Antenna_Catalog.pdf

E-Lins FAQ — POE

文章目录 : 产品文章, 伊林思产品FAQ, 其他, 技术相关

Q: Does your router support POE option? How does it work?

A: Yes, E-lins H685 series, H700 series and H720 series routers support POE option.

It works as following chart.

POE

 

Antenna Gain

文章目录 : 其他

For a better understanding about antenna gain, you can go through this article.

Antenna gain is often quoted with respect to a hypothetical antenna that radiates equally in all directions, an isotropic radiator. This gain, when measured in decibels, is called dBi. Conservation of energy dictates that high gain antennas must have narrow beams. For example, if a high gain antenna makes a 1 watt transmitter look like a 100 watt transmitter, then the beam can cover at most 1/100 of the sky (otherwise the total amount of energy radiated in all directions would sum to more than the transmitter power, which is not possible). In turn this implies that high-gain antennas must be physically large, since according to the diffraction limit, the narrower the beam desired, the larger the antenna must be (measured in wavelengths).

Antenna gain can also be measured in dBd, which is gain in Decibels compared to the maximum intensity direction of a half wave dipole. In the case of Yagi type aerials this more or less equates to the gain one would expect from the aerial under test minus all its directors and reflector. It is important not to confuse dBi and dBd; the two differ by 2.15 dB, with the dBi figure being higher, since a dipole has 2.15 db of gain with respect to an isotropic antenna.

Gain is also dependent on the number of elements and the tuning of those elements. Antennas can be tuned to be resonant over a wider spread of frequencies but, all other things being equal, this will mean the gain of the aerial is lower than one tuned for a single frequency or a group of frequencies. For example, in the case of wideband TV antennas the fall off in gain is particularly large at the bottom of the TV transmitting band. In the UK this bottom third of the TV band is known as group A, see gain graph comparing grouped aerials to a wideband aerial of the same size/model.

Other factors may also affect gain such as aperture (the area the antenna collects signal from, almost entirely related to the size of the antenna but for small antennas can be increased by adding a ferrite rod), and efficiency (again, affected by size, but also resistivity of the materials used and impedance matching). These factors are easy to improve without adjusting other features of the antennas or coincidentally improved by the same factors that increase directivity, and so are typically not emphasized.

E-Lins router has stardard 3dbi cellular antenna. This is enough for normal use. If you want to put it in rural place or place with bad reception, it’s better to get a high gain antenna.

Orange helps Sensile Tech monitor Oil & Gas with M2M

文章目录 : 其他, 技术相关

About Sensile Technologies

Sensile Technologies is a forerunner in the Internet of Things (IoT) market and a leading provider of solutions for remote monitoring of tank levels for the oil and propane industry. Founded in 1999 and based in Morges, Switzerland, Sensile Technologies has extensive experience in high-quality product development and production as well as reliable service and support. They are an innovative company with four world premieres under their belt. All of their products are Swiss made and certified for hazardous environments.

 

About Orange Business Services

Orange Business Services, the Orange branch dedicated to B2B services, is not only a telecom operator, but also an IT solutions integrator and applications developer in France and around the world. Its 20,000 employees support companies in all areas of their digital transformation: mobile and collaborative workspaces; IT/cloud infrastructure; fixed and mobile connectivity; private and hybrid networks; applications for Internet of Things, 360° customer experience and Big Data analytics; and cybersecurity thanks to dedicated experts and infrastructure to protect information systems. More than 3,000 multinational organizations and 2 million SOHOs, enterprises and local authorities in France rely on Orange Business Services as their trusted partner.

 

Orange is one of the world’s leading telecommunications operators with annual sales of 40 billion euros in 2015 and has 155,000 employees worldwide at 31 March 2016. Orange is listed on the NYSE Euronext Paris (symbol ORA) and on the New York Stock Exchange (symbol ORAN).

Orange and any other Orange product or service names included in this material are trademarks of Orange or Orange Brand Services Limited.

 

 

Orange Business Services has won a three-year contract with Sensile Technologies for M2M connectivity, including 25,000 SIM cards, to support its two remote monitoring products worldwide: NETRIS®2 and GASLink®

Headquartered in Morges, Switzerland, Sensile Technologies is a pioneer in the internet of things (IoT) market. Specifically, it is a leading provider of solutions for the remote monitoring of tanks and meters in the oil and gas industry. Sensile Technologies monitors more than 60,000 tanks in industrial and business facilities across 60 countries, via a global network of highly-qualified technicians and local partners.

Up to now, Sensile Technologies used 2G compatible devices to power its telemetry solutions. The contract with Orange Business Services extends this to cover 3G/4G devices, which future-proofs the solutions against 2G network shutdown and ensures seamless global coverage.

Sensile Technologies’ telemetry solutions, GASLink® and NETRIS®2, play a key role in the monitoring process. They are installed directly in the oil or propane tank and regularly send tank level measurements via the GSM network to the cloud, where the data is automatically processed.

The up-to-date tank level data allows oil and propane merchants – and their haulers – to arrange deliveries automatically via planning tools. They get data directly in their enterprise resource planning (ERP) system from Sensile Technologies’ Oil Link cloud solution to trigger deliveries automatically. In addition, their customers can get access on smartphones to monitor consumption.

Thanks to the optimization of deliveries based on live data, merchants and haulers can lower their logistics costs by at least 25 percent, without the risk of customers running dry. In addition to mitigating the risk of running out of fuel, customers are also able to access a detailed visualization and analysis of their logistics, enabling them to adapt their processes to reduce their costs further.

“Leading oil and propane companies rely on our autonomous, robust, and easy to install systems. We have more than 60,000 in place on tanks in over 60 countries. Orange Business Services has proven itself as a reliable partner with the global footprint we need for our business. Their competitive flat-fee pricing was convincing as well,” said Jean-Marc Uehlinger, Operational Director, Sensile Technologies.

“With its telemetry solutions Sensile Technologies is helping drive the latest revolution in industry. In Industry 4.0 every part of the enterprise and each phase of the manufacturing cycle will be connected. The internet of things (IoT) and M2M play a key part in this revolution, and we manage 10 million connected objects for our customers worldwide, including over 7 million active SIM cards,” Anne-Sophie Lotgering, senior vice president Europe, Russia & CIS, Orange Business Services.

GASLink® and NETRIS®2 are the result of 15 years’ experience from Sensile Technologies in the development and production of autonomous telemetry equipment. In addition to using the 2G (SMS) network to transmit data, NETRIS®2 can also use 3G or 4G, as well as create a short-distance radio frequency connection, which functions in every location.

PPPoE–Point-to-point protocol over Ethernet

文章目录 : 其他, 技术相关

The Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating PPP frames inside Ethernet frames. It appeared in 1999, in the context of the boom of DSL as the solution for tunneling packet sover the DSL connection to the ISP’s IP network, and from there to the rest of the Internet. A 2005 networking book noted that “Most DSL providers use PPPoE, which provides authentication, encryption, and compression.” Typical use of PPPoE involves leveraging the PPP facilities for authenticating the user with a username and password, predominately via the PAP protocol and less often via CHAP.

On the customer-premises equipment, PPPoE may be implemented either in a unified residential gateway device that handles both DSL modem and IP routing functions or in the case of a simple DSL modem (without routing support), PPPoE may be handled behind it on a separate Ethernet-only router or even directly on a user’s computer. (Support for PPPoE is present in most operating systems, ranging from Windows XP, Linux to Mac OS X.) More recently, some GPON-based (instead of DSL-based) residential gateways also use PPPoE, although the status of PPPoE in the GPON standards is marginal.

PPPoE was developed by UUNET, Redback Networks (now Ericsson) and RouterWare (now Wind River Systems) and is available as an informational RFC 2516.

In the world of DSL, PPPoE was commonly understood to be running on top of ATM (or DSL) as the underlying transport, although no such limitation exists in the PPPoE protocol itself. Other usage scenarios are sometimes distinguished by tacking as a suffix another underlying transport. For example, PPPoEoE, when the transport is Ethernet itself, as in the case of Metro Ethernet networks. (In this notation, the original use of PPPoE would be labeled PPPoEoA, although it should not be confused with PPPoA, which is a different encapsulation protocol.)

PPPoE has been described in some books as a “layer 2.5″ protocol, in some rudimentary sense similar to MPLS because it can be used to distinguish different IP flows sharing an Ethernet infrastructure, although the lack of PPPoE switches making routing decision based on PPPoE headers limits applicability in that respect.

Differences between industrial class and SOHO class for Router / Modem

文章目录 : 产品文章, 伊林思产品FAQ, 技术相关

As we know, the devices mainly cover three classes, that is SOHO class, Industrial class and Military class.  Each class has its own application requirement. The SOHO class modem and router don’t meet the requirements of the industrial environment and standard entirely because of it is designed for office automation. Mainly differences are the below,

1. Control
The SOHO class is simple design for internet use. People no need control it very often.
The industrial class is designed mainly for industry applications. People need control it quite often, even 7*24 hours.

2. Stable, reliable and robust
SOHO class features are simply. It is mainly used for internet surfing, which is installed in house. People can check and assist it in time. With cost requirement, SOHO class design and development will not care too much for the stability and reliability. The industrial class cares the stability and reliability very much because it’s mainly installed under people’ touch. In another world, it should be working for 7*24 hours without people assist. So the industrial class must have good reliability, recoverability, and maintainability in the production environment at the same time. It is a guarantee that it will not lead the collapse of applications, operating system even the network when any component failure occurs in a network system.

3. The security issues
Lots of fields exist inflammable, explosive or toxic gases inevitably in the process of industrial production, and there must have some certain explosion-proof technology for the intelligent devices and communication equipment which can ensure the safety of industrial field. It is much more practical to add explosion-proof and explosion-proof measures in the Ethernet system under the condition of current technology, namely the ignition energy which caused by the devices problem will not leak through increasing explosion-proof measures to the Ethernet field devices, which can ensure the safety of running system. For those dangerous situation where is no strict safety requirements, you can not consider complex explosion-proof measures.

The network safety of industrial system is another security issue must be considered at the industrial Ethernet applications. Industrial Ethernet can make the traditional three layers of the network system, namely, information management layer, process monitoring layer and field equipment layer, an organic whole, which make the faster data transfer, higher real-time and it can integrate with the Internet seamlessly, it realizes data sharing and improves the operational efficiency of the factory. But there is a series of network security problems at the same time, industrial network may under the threat of virus infection, hackers and illegal operation.

4. The vehicle power supply issues
The vehicle power supply refers to the cable connected to the field devices not only to transmit data signals, but also provide equipment working power supply on-site. The Ethernet hasn’t considered this issue from the design at the beginning, while there are a lot of bus power supply requirements on the industrial site. Because of the above problems, the ordinary commercial Ethernet cannot be applied to the control of industrial field directly. And the industrial Ethernet is produced to solve these problems.

 

5. Features and performance
The industrial class owns much more features and SOHO class, such as connection alive monitor and keeping, Dual Sim connection, multi-line redundancy, GPS, Serial ports, VPN networks, high gain and special antenna replacement, etc.

Wire Your Home or Business Right with a 4G Wifi Router

文章目录 : 产品文章, 伊林思产品FAQ, 技术相关

Now, network is a neccesity in our lives. When we are at home or office, we are tend to use wifi for better internet surfing experience.

wireless router is designed to amplify the signal sent out into a home or office so devices, such as tablets and smartphones, can connect to the internet without the benefit of hardwiring. A 4G modem with fast capabilities is the preferred choice for many home and business owners these days.

GSM modem might be all that is required to connect to the internet, but a modem router that offers wireless capabilities takes access to the next level. Transforming a home or office into a hub for wireless communication takes specialized equipment, such as a VPN router or 4G wifi router. At E-Lins, we specialize in all the equipment required to m2m, power smartphones, computers, tablets and other devices, such as security systems. It is our aim to offer the best router price points available so our clients can easily transform their homes or businesses into “smart” properties.

When a 4G wifi router is installed in a home or business (e.g. wireless M2M solutions), users gain a number of benefits. Firstly, these devices enable any internet ready device the ability to connect. Plus, they also make it much easier for users to manage a diversity of equipment. In addition, a VPN router that is properly set up enables users to secure their internet connections to provide more peace of mind for online activities.

Transforming a home or office into a hub for wifi connectivity requires specialized equipment. E-Lins is dedicated to providing our customers with everything they need at highly competitive pricing. Just browse our selection today to find the modems or routers needed to transform your home or workspace into a wifi hub.

Nokia #India announces #5G #IoT for #SmartCities

文章目录 : 其他, 技术相关

The Finnish company showcased more than 60 different use-cases of these technologies at its annual Innovation Day in Bengaluru, including those that are already live and ready for use as well as ones that aren’t live yet.

Nokia’s research and development office in Bengaluru, which has around 5,000 employees, creates solutions for both its Indian and international markets. Its new IoT range, though, will focus more on Indian clients, especially governments.

“5G and IoT are going to be the future trends that we see in the marketplace. While from an India standpoint it’s still an early stage for 5G to happen, IoT is taking a bit of a step forward in terms of adoption here,” Randeep Raina, chief technology officer for Nokia India said in an interview on Wednesday.

“There are certain initiatives led by the government right now in the form of digital India and smart city programs. IoT could be one of the enablers to make cities a bit safer and smarter. It’s with that intent that we’d put a theme out here on this innovation day,” he said.

The three main solutions, or use-cases, showcased by the company on Wednesday were video analytics of real-time city surveillance, a public safety service that can be deployed at railroad crossings and a smart parking service.

Based on real-time city surveillance via cameras deployed at various public locations Nokia’s IoT solution will be able to provide clients – mostly governments and policing authorities – with data analysis. The analysis includes everything from identifying anomalies, such as incorrect pedestrian crossings, to tracking traffic patterns.

Its public safety solution uses sensors, beacons and cameras and is aimed at keeping pedestrians from straying across the path of oncoming trains at railroad crossings. This service will both warn people crossing railroads on foot of an oncoming train as well as alert the authorities and issue notice of a fine in case people cross even after receiving a warning. The warning messages will appear on any device using any service provider and are not app-based, i.e. the user will not need to install an app to see the messages.

Nokia’s smart parking solution will target organized parking lots that can use it to fully automate the process – from identifying a car on entry and guiding the driver to free parking spots through an app, to recording the number of hours a car is parked at the lot and bill payment online via the app.

Roughly two months ago, auto components supplier Bosch Ltd also launched solutions targeted at creating smart cities, including a smart parking service that will help commuters find space in crowded areas. The German company has other similar solutions that are, again, aimed at assisting traffic policing and citizen safety and security systems.

M2M Magazine  http://www.machinetomachinemagazine.com/2016/12/15/nokia-india-announces-5g-iot-for-smartcities/

H685系列4G FDD LTE无线路由器

文章目录 : 产品文章, 伊林思产品FAQ

 H685t 4G LTE无线路由器网络参数

 

版本:4G LTE版本,FDD-LTE;

 

支持网络:4G LTE(FDD), 3G WCDMA HSPA+/HSUPA/HSDPA/UMTS或3G CDMA2000 EVDO, 2G EDGE/GPRS/GSM或2G CDMA;

 

网络频点:
4G FDD LTE:
Band 1–2100Mhz
Band 2–1900Mhz
Band 3–1800Mhz
Band 4—AWS(1700/2100Mhz)
Band 5–850Mhz
Band 7–2600MHz
Band 8–900Mhz
Band 12–700Mhz
Band 13–700(B13)Mhz
Band 17–700(B17)/AWS
Band 19—800Mhz
Band 20–DD800Mhz
Band 21
Band 25 –1900Mhz G Block
Band 31– 450Mhz

其他FDD LTE频段…
CDMA1x/EVDO: 800Mhz或800/1900Mhz
UMTS/HSPA/HSUPA/HSPA/HSPA+ (WCDMA/FDD): 2100Mhz,可选900/2100Mhz或850/1900/2100MHz或850/900/1900/2100Mhz/AWS;

EGSM 850/900/1800/1900全频;

 

理论带宽:

HSPA+: 下行21/42Mbps, 上行5.76Mbps;
HSPA: 下行14.4Mbps, 上行5.76Mbps;
HSUPA: 下行7.2Mbps, 上行5.76Mbps;
HSDPA: 下行7.2 Mbps, 上行384kbps;
WCDMA/UMTS: 下行/上行384kbps;

 

EDGE: 下行 236.8kbps, 上行118kbps;
GPRS: 下行 85.6 kbps, 上行42.8kbps;

 

CDMA1x: 下行/上行 153.6kbps;
CDMA EVDO:
Rev B: 下行14.7Mbps, 上行5.4Mbps
Rev A: 下行3.1Mbps, 上行2.4Mbps
Rev O: 下行2.4Mbps, 上行153.6kbps

 

4G LTE: 100/150/300Mbps 下行, 上行50Mbps

 

注:以上均为理论峰值。实际带宽与网络质量有关。