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工业路由器NBMA网络转化为点到点的链路 当我们使用点到点子接口将NBMA网络转化为点到点的链路时,整个NBMA网络将产生过多的PVC部分互联或全互联的网状结构,但这将产生一定的负面影响,会使网络中产生大量的LSP泛洪流量。我们都知道,运行IS-IS的工业路由器当接收到一个LSP报文后,会将此LSP从除接收接口以外的所有启用了IS-IS协议的接口泛洪出去,以使网络中的其他工业路由器都可以接收到此LSP。但是这种泛洪机制对于存在大量部分互联或全互联的网络将产生过多冗余的LSP扩散。 所谓全互联或全网状网络拓扑,是指所有工业路由器都与其他工业级无线路由器向连接(通常是点到点子接口)。在这样的一个网络中,当一台路由器从某接口收到邻居泛洪过来的LSP后,由于它并不知道这个LSP是否已经被其他邻居工业4g路由器收到,所以会再从其他接口泛洪出去,即使其他工业级4g路由器的链路状态数据库中已经存在这个LSP。如果网络中有n个全网路由器的话,那么网络中的每台工业级LTE路由器都会扩散n-2条冗余的LSP,这样总共被泛洪的多余的LSP将为(n-1)x(n-2),条而这些LSP的扩散是多余。如果每台工业全网通路由器都刷新一条LSP的话,那么这个数量还将会成倍数的增长,导致了大量带宽资源的浪费。 为了解这种在全互联或高度互联的网络中出现的LSP泛洪的冗余现象,IS-IS提供了一种解决方案——IS-IS全通组,也称作Mesh组。IS-IS全通组在RFC2973中进行了定义。所谓全通组,就是假设所有工业3G路由器之间都是完全互联的,每个工业级全网通路由器都会直接收到其他全网通工业级路由器泛洪的原始的LSP的拷贝。 可以将全网工业路由器的接口加入到某个全通组中,一个全网通工业路由器上可以存在多个全通组,全通组内接口之间的LSP泛洪是受限制的,全通组之间的LSP泛洪是正常的操作,未加入全通组的工业级3G路由器接口与全通组之间也是正常的LSP泛洪操作。全网通路由器 ...

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工业路由器使用CSNP来保证链路状态数据库的完整性 在广播网络中,工业路由器使用CSNP来保证链路状态数据库的完整性,并且只有DIS才会发送工业全网通路由器CSNP报文,DIS发送CSNP报文的间隔为10s。CSNP报文中描述了DIS的链路状态数据库中所有工业级3G路由器LSP的摘要信息。当其他工业级路由器收到DIS发送的CSNP后,会使用CSNP中的LSP摘要信息与与本地的链路状态数据库中的LSP进行比较,进行比较的目的是确定本地链路状态数据库中的信息是否已经同步和完整。如果工业级4g路由器发现本地数据库中缺少某个LSP条目,那么它将使用PSNP向DIS请求这个缺少的LSP条目。这个PSNP报文中包含就是请求的LSP条目的摘要信息。当DIS收到其他全网路由器发送的PSNP报文后,将会发送一个完整的LSP报文,这个LSP就是其他工业无线路由器所缺少的LSP条目。在广播网络中,DIS使用周期性的CSNP报文向网络中发送同步链路状态数据库的信号,而其他工业4g路由器使用PSNP报文来请求缺少的LSP条目。 在IS-IS的点到点类型的网络中,链路状态数据库同步的操作与广播网络中略有不同,而且工业级全网通路由器发送CSNP与PSNP报文的方式和其作用也有一些差别。 在点到点网络中不存在DIS,工业3G路由器不会周期性的发送CSNP报文,CSNP报文只在链路链路被激活时发送一次,而且链路两端的工业级4g路由器都会发送CSNP报文以描述本地链路状态数据库中所有LSP的摘要信息。当工业路由器发送对端发送的CSNP中含有本地缺少的LSP信息时,也会使用PSNP报文向对端请求LSP。当对端收到PSNP报文后,将向请求方发送包含完整LSP信息的LSP报文,这点上与广播网络中的操作是相同的。但是在点到点链路上,收到LSP报文的工业4g路由器还会向对方再次发送一个PSNP报文以对之前收到的LSP进行确认。可以说,在点到点网络中的LSP交换是可靠的。这点与广播网络不同,在广播网络中工业级无线路由器不使用PSNP报文对收到的LSP进行确认,而是通过DIS周期性地发送CSNP报文以弥补广播网络中不可靠的LSP交换。 在点到点链路上,工业路由器使用PSNP对收到的LSP报文进行确认,所以在点到点链路上是可靠的泛洪机制。 IS-IS路由协议支持两种网络类型:广播链路和点到点链路。默认情况下,全网通工业级路由器IS-IS将广播网络和NBMA网络看作是广播类型。对于封装了PPP或HDCL等协议的链路看作是点到点类型。对于NBMA网络中的主接口和点到多点子接口,IS-IS将其看作是广播类型;对于NBMA网络中的点到点子接口,将其看作是点到点类型。IS-IS不像OSPF那样,提供了对NBMA网络(例如Frame-Relay、ATM)的专门支持。对于NBMA网络,全网通工业路由器IS-IS认为其网络拓扑是PVC全互联(mesh)的,就是把它看作广播网络。但如果实际网络拓扑中并不是PVC全互联的结构时,例如部分互联的结构和Hub-Spoke结构,推荐使用点到点类型网络,即使用点到点子接口,以免造成NBMA网络中的链路状态数据库同步出现问题。无线路由器

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工业级路由器LSP校验和(Checksum) 当工业路由器生成一个LSP后,为了保证LSP中信息的完整性,它将对LSP进行校验和计算,然后封装进LSP的LSP校验和字段(checksum)。校验和的计算包括从LSP中的剩余时间字段之后的字段一直到数据包的末尾,由于剩余时间是一个不断变化的字段,所以校验和计算将不包括这部分内容。校验和主要用于检查被破坏的LSP或者还没有从网络中清除的过期LSP。当一台工业4g路由器收到一个LSP,在将该LSP放入到本地链路数据库和将其再泛洪给其他邻接工业3G路由器之前,会重新计算LSP的校验和,如果校验和与LSP中携带的校验和不一致,则说明此全网通工业级路由器LSP传输过程中已经被破坏。 当工业路由器收到了一个被破坏的LSP后,会采取一个清除的操作。它将该LSP的剩余时间设置为0然后再泛洪到网络中。当网络中的其他工业LTE路由器收到这个剩余时间被置为0的LSP后,会将其本地链路状态数据库中相应的LSP清除。当产生这个被破坏的LSP的源双卡路由器收到这个剩余时间被置为0的LSP并发现这个LSP是自己生成的后,会重新生成一个正确的LSP然后泛洪到网络中。 IS-IS的这种LSP清除操作虽然可以有效的清除网络中被破坏的LSP,给运行工业级4G路由器IS-IS路由协议的网络提供了一种自动修复的能力,但是它也带来了一种负面的影响。如果网络中的介质存在问题,就有可能产生LSP被连续破坏的现象。这些被破坏的LSP会被路由器不断的清除,同时源工业无线路由器也会不断的重新生成新的LSP,这种现象被称为LSP破坏风暴。LSP破坏风暴将消耗大量的网络资源。我们可以对工业级无线路由器进行配置,使其在收到被破坏的LSP后忽略它,即丢弃被破坏的LSP,从而启动清除操作。在后续工业级全网通路由器IS-IS配置章节中将介绍具体的配置方法。 标签:4g路由器...

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伊林思:中间系统类型工业4G路由器(ISType) 在LSP报头中最后一个字节的中间系统类型(ISType)位占2bit,工业4G路由器的类型。该字段表示了此LSP是来自L1工业路由器还是L2工业级路由器。这也表示了收到此LSP的工业路由器将把这个LSP放到L1链路状态数据库还是L2链路状态数据库。该2bit中01表示L1;11表示L2;00与10未使用。 DIS和伪节点【4g路由器】 LSPID中包括一部分称为伪节点标识符(PseudonodeID),用来标识此LSP是否是由网络中的指定中间系统(DIS,DesignatedIntermediateSystem)为网络产生的伪节点LSP。 在广播类型的网络(LAN)中,IS-IS需要为每个网段选择一个指定中间系统DIS,这里的指定中间系统DIS的作用与OSPF中的指定工业级路由器DR的非常相似。在OSPF网络中,DR用来负责将链路状态信息泛洪到每个非DR工业路由器,并且帮助其进行链路状态数据库的同步。在IS-IS中也是如此,为了使链路状态信息更加准确和实时的同步给网络中的所有全网路由器,并且要减小带宽的利用率和路由器的处理开销,IS-IS也要在广播网络中选举出一个工业级无线路由器(DIS)来达到这个目的。 在IS-IS中选举DIS的过程也是非常简单的。每个运行IS-IS协议的全网通路由器的接口都拥有一个优先级(Priority),默认的优先级为64,同样也可以通过命令手工修改默认的优先级。工业4g路由器之间发送的HelloPDU中将携带接口的优先级信息。每个工业LTE路由器收到网络中其他工业级LTE路由器发送的HelloPDU后,通过比较优先级来进行DIS的选举。优先级数值越大的工业全网路由器将被选举为此网段的DIS。这里与OSPF不同的是,在OSPF中,如果接口的优先级为0,那么这台工业级全网通路由器将被认为没有资格成为此网段的DR。在IS-IS中,如果接口的优先级为0,这仅仅表示最低的优先级,但是此工业级4G路由器还拥有成为DIS的资格。当两台工业全网通路由器的接口优先级相同时,那么拥有更大的SNPA(在LAN中通常为MAC地址)的接口的工业级全网通路由器将成为DIS。在OSPF中如果优先级相同将比较RouterID。 在OSPF中,选举完DR后,还将选举出一个备份DR,BDR(BackupDR),以用来在原先DR出现故障时接替新的DR角色,并重新选举出BDR。但在IS-IS中,将不进行备份DIS的选举。如果DIS出现故障了,其他全网通工业路由器将会重新选举出一个DIS。其次,在OSPF中,DR和BDR的选举是非抢占模式的,也就是说当有更优优先级的路由器加入到现有网络中后,也不会抢占原先DR和BDR的角色。从某种意义上来讲,在OSPF网络中,第一台启动的双卡路由器将成为网络的DR,第二台启动的双路路由器将将成为BDR。与OSPF相比,DIS的选举是抢占的,即当有更优DIS资格双路路由器加入网络后,它会成为网络中新的DIS。这样,每次DIS的变更必须泛洪一组新的LSP。 默认情况下,运行IS-IS的双卡路由器将以每10s的间隔发送HelloPDU。但是对于一个DIS来说,由于它在网络中起到重要的作用,所以它发送HelloPDU的间隔的频率将是其他路由器的3倍,也就是说DIS以每3.3s的间隔发送HelloPDU。这样其他全网通工业路由器可以迅速检测出DIS出现故障并开始新的选举过程,增加了网络的收敛速度。无线路由器

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用于工业路由器指定策略的路由映射 Route Redistribution redistribute routing-process process-id [tag|metric|metic-type|subnets|route-map] *routing-process:BGP EGP Connected EIGRP IGRP ISIS ISO-IGRP Mobile ODR OSPF RIP and Static *ospf-metric:BGP缺省重分布度量 1 其他协议为20 *tag-value:附加到重分布工业路由器路由的一个32位的值,OSPF没有使用工业级无线路由器路由标记, 可以在用于指定策略的路由映射中引用,缺省标记为0 利用route-map控制重分布,并修改metric值,并做标记 如上图,基于标签来控制工业级路由器路由的重分布 Controlling...

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Wireless M2M devices in the oil and gas industry

Category : 技术相关

Wireless M2M devices in the oil and gas industry,E-lins  are M2M players that deliver solutions to a wide range of industries, including oil & gas.

North America is the most advanced market for M2M applications in the oil & gas sector. The region is also the home of a majority of the players specialising in the oil & gas industry. E-lins are major vendors of field instrumentation, equipment, services and M2M solutions for the of the oil & gas industry.

According to a new research report from E-lins (wireless m2m manufacturer), the number of devices with cellular or satellite connectivity deployed in oil & gas applications worldwide was 423,000 at the end of 2013.

Growing at a CAGR of 21.4 percent, this number is expected to reach 1.12 million by 2018. The split between cellular and satellite based M2M devices at the end of the forecast period will be 871,000 units and 244,000 units respectively. The oil & gas industry is characterized by remote and inaccessible facilities where wireless communication in many cases is the only viable option for transferring M2M data.

Industrial LTE Router For Secure M2M Communication

Category : 其他, 技术相关

E-Lins  has expanded it’s M2M router  in  LTE. This router solutions for LAN-WAN , GPRS , UMTS and LTE now available .

E-Lins Industrial LTE router is a high- performance router for industrial use , which can be sensitive data securely via cellular networks. The integrated firewall and VPN support protect your application secure from unauthorized access. If LTE is not available, the system automatically switches to UMTS / GPRS / EDGE.In addition, the data connection and the mobile network quality to be monitored. If necessary, a message is sent or rebuilt the cellular connection.The configuration of the router via the built-in web server, or XML files in the remote mode.

Other important features are:

Supply voltage : DC5V~40V is the default, DC5V~50V is the option
extended temperature range of -30 ~ 75°C
integrated overvoltage protection

Optional all Router with RS232 and RS485 interface for transparent serial transmission over a TCP / IP are available .

2.4Ghz WiFi Comparation

Category : 技术相关

WLAN communication criterion live through 802.11a, 802.11b, 802.11g and nowadays’ main 802.11n and 802.11ac.

802.11b 11Mbps
802.11 Super b 22Mbps
802.11g/802.11a 54Mbps
802.11 Super G 108Mbps
802.11 High Speed-G 125Mbps
802.11n 150Mbps
802.11n 300Mbps
802.11n 450Mbps
802.11ac 1200Mbps

450Mbps is the fastest WLAN in 2.4Ghz band. Comparing to 300Mbps wireless products, 450Mbps products have higher transmission band, provide high-efficient steam,more stability and wider coverage.
Real 450Mbps Wireless Products use three WiFi antenna. 150Mbps is two stream in 802.11N protocols. 450Mbps is three stream. One antenna sends and receives one stream, so 300M uses 2 WiFi antenna which is enough.
All E-Lins’ Cellular routers have WiFi feature option. H685 and H820 series use 150Mbps, and H700/H720 series use 300Mbps. H860 openWRT series has expansion WiFi slot for different band even for 450Mbps and 802.11ac dual band.

Radio module ME909u-523 mini PCIe for Wireless M2M

Category : 技术相关

Specification

ME909u-523 Mini PCIe is a variant of ME909u-523 with standard Mini PCIe form factor, which is from ME909u family. It is high-quality designed LTE module which specially for industrial-grade M2M applications such as vehicle telematics, tracking, mobile payment, industrial router, safety monitor and industrial PDAs.
ME909u-523 Mini PCIe supports 100Mbps downlink and 50Mbps uplink data rate, includes enhanced features like FOTA, USSD and Huawei enhanced AT commands.

 

Size and Weight

Height:30.4mm
Width:51mm
Depth:3.4mm
Weight:<15g

Supported Bands

ME909u-523 Mini PCIe:
LTE (FDD) B2/B4/B5/B17
DC-HSPA+/HSPA+/HSPA/UMTS tri-band 850/1900/AWS MHz

Data Transfer Rate
DC-HSPA+ :D ownlink:42 Mbps, Uplink: 5.76 Mbps
LTE FDD: Downlink:100 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT3)
Interface
Antenna connector
PCIe interface
USB 2.0 High speed
SIM Card
Reset

Power Supply
3.0 V to 3.6 V (3.3 V recommended)

GPS/Glonass
GPS Standalone
A-GPS

 

ME909u-521 radio module for Wireless M2M

Category : 技术相关

Specification

ME909u-521 (for Asia, Europea, Africa) Mini PCIe is a variant of ME909u-521 with standard Mini PCIe form factor, which is from ME909u family. It is high-quality designed LTE module which specially for industrial-grade M2M applications such as vehicle telematics, tracking, mobile payment, industrial router, safety monitor and industrial PDAs.
ME909u-521 Mini PCIe supports 100Mbps downlink and 50Mbps uplink data rate, includes enhanced features like FOTA, USSD and Huawei enhanced AT commands.

 

Size and Weight

Height:30.4mm
Width:51mm
Depth:3.4mm
Weight:<15g

Supported Bands

ME909u-521 Mini PCIe:
LTE (FDD) B1/B2/B3/B5/B7/B8/B20
DC-HSPA+/HSPA+/HSPA/UMTS dual-band B1/B2/B5/B8
EDGE/ GPRS/ GSM quad-band 850/900/1800/1900 MHz

Data Transfer Rate
DC-HSPA+ :D ownlink:42 Mbps, Uplink: 5.76 Mbps
LTE FDD: Downlink:100 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT3)

Interface

Antenna connector
PCIe interface
USB 2.0 High speed
PCM Voice
SIM Card
Reset

Power Supply
3.0 V to 3.6 V (3.3 V recommended)

GPS/Glonass
GPS Standalone
A-GPS

 

Advantages and Disadvantages of 4G LTE TECNOLOGY

Category : 技术相关

Today we talk some advantages and disadvantages of 4G LTE TECNOLOGY.  4G LTE is the 4th generation wireless mobile networks.  With high data speed, the 4G can reach 100Mbps, 150Mbps and 300Mbps, future will update to 1000Mbps.

Advantages
-support for interactive multimedia, voice, streaming video, Internet, and other broadband services -IP based mobile system-High speed, high capacity, and low cost per bit. -global access, service portability, and scalable mobile services -Seamless switching and a variety of Quality of

-Better spectral efficiency. Service driven services.
- Better scheduling and call admission control techniques

Disadvantages
-Expensive and hard to implement
-bettery usage is more
-needs complex hardware

TDD LTE and FDD LTE’s Advantages / disadvantages of for cellular communications

Category : 技术相关

Let’s talk something about TDD LTE and FDD LTE’s Advantages / disadvantages of for cellular communications.

As we know, the LTE mainly covers two types, which are TDD and FDD. There are a number of the advantages and disadvantages of TDD and FDD that are of particular interest to mobile or cellular telecommunications operators. These are naturally reflected into LTE.

COMPARISON OF TDD LTE AND FDD LTE DUPLEX FORMATS
PARAMETER TDD LTE FDD LTE
Channel reciprocity Channel propagation is the same in both directions which enables transmit and receive to use on set of parameters Channel characteristics different in both directions as a result of the use of different frequencies
Paired spectrum Does not require paired spectrum as both transmit and receive occur on the same channel Requires paired spectrum with sufficient frequency separation to allow simultaneous transmission and reception
Hardware cost Lower cost as no diplexer is needed to isolate the transmitter and receiver. As cost of the UEs is of major importance because of the vast numbers that are produced, this is a key aspect. Diplexer is needed and cost is higher.
UL / DL asymmetry It is possible to dynamically change the UL and DL capacity ratio to match demand UL / DL capacity determined by frequency allocation set out by the regulatory authorities. It is therefore not possible to make dynamic changes to match capacity. Regulatory changes would normally be required and capacity is normally allocated so that it is the same in either direction.
Guard period / guard band Guard period required to ensure uplink and downlink transmissions do not clash. Large guard period will limit capacity. Larger guard period normally required if distances are increased to accommodate larger propagation times. Guard band required to provide sufficient isolation between uplink and downlink. Large guard band does not impact capacity.
Cross slot interference Base stations need to be synchronised with respect to the uplink and downlink transmission times. If neighbouring base stations use different uplink and downlink assignments and share the same channel, then interference may occur between cells. Not applicable
Discontinuous transmission Discontinuous transmission is required to allow both uplink and downlink transmissions. This can degrade the performance of the RF power amplifier in the transmitter. Continuous transmission is required.

 

what is 4g lte for wireless M2M

Category : 技术相关

What is LTE?

LTE (Long-Term Evolution, commonly marketed as 4G LTE) is a standard for wireless communication of high-speed data for mobile phones and data terminals. It is based on the GSM/EDGE and UMTS/HSPA network technologies, increasing the capacity and speed using a different radio interface together with core network improvements. The standard is developed by the 3GPP (3rd Generation Partnership Project) and is specified in its Release 8 document series, with minor enhancements described in Release 9.

LTE is the natural upgrade path for carriers with both GSM/UMTS networks and CDMA2000 networks. The different LTE frequencies and bands used in different countries will mean that only multi-band phones will be able to use LTE in all countries where it is supported.

Although marketed as a 4G wireless service, LTE (as specified in the 3GPP Release 8 and 9 document series) does not satisfy the technical requirements the 3GPP consortium has adopted for its new LTE Advanced standard. The requirements were originally set forth by the ITU-R organization in its IMT Advanced specification. However, due to marketing pressures and the significant advancements that WiMAX, Evolved High Speed Packet Access and LTE bring to the original 3G technologies, ITU later decided that LTE together with the aforementioned technologies can be called 4G technologies.The LTE Advanced standard formally satisfies the ITU-R requirements to be considered IMT-Advanced.[4] To differentiate LTE Advanced and WiMAX-Advanced from current 4G technologies, ITU has defined them as “True 4G”

Dual Sim 4G Router for Japan

Category : 产品文章, 伊林思产品FAQ

Series: H750 Router (industrial grade, dual sim one modem, LAN RJ45*3+WAN RJ45*1, option: RS232/RS485); One sim work online, the other standby, switch freely, cold standby failure backup each other
Detailed spec link1: http://www.szelins.com/download/H750_Datasheet_Eng.pdf
Detailed spec link2: http://www.e-lins.com/EN/download/H750_Datasheet_Eng.pdf
VPN(PPTP, L2TP, IPsec, GRE), SNMP; DDNS, DHCP, NAT/NAPT, Web, Auto-dial, always online, watch-dog, POE(Option);
Cellular/WAN RJ45/WiFi Client supports cold failover;
Option feature:
1) WiFi 802.11b/g/n (working as AP, Bridge Repeater, client)
2) GPS
3) Serial port for DTU feature (Serial to Cellular Gateway), RS232 or RS485 to select one
4) DC input 5V~50V (default is DC5V-40V)
5) dynamic route (D-route) for RIP, OSPF, BGP, Zebra
6) Internal battery 8000mAH (Model name is H700)

UMTS/HSPA/HSUPA/HSPA/HSPA+/DC-HSPA+ (WCDMA/FDD): 850/1900/2100 MHz, option for 850/900/1900/2100Mhz/1700Mhz/AWS;

3G TD-SCDMA: 2010~2025MHz/1880~1920MHz

 

Quad-band EGSM 850/900/1800/1900;

 

CDMA1x/EVDO: 800/1900Mhz, option for 450Mhz;

Cellular Band Supported.

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 28 – 700Mhz

Band 31– 450Mhz
Other FDD band…

4G TDD LTE (TD-LTE):

Band 41 – 2500/2600Mhz

Band 40 — 2300Mhz

Band 39 – 1900Mhz

Band 38 — 2600Mhz

Other TDD band…

Notes: 4G LTE is new. There are many different band and frequencies. Please confirm the detailed band and frequency with your carriers before order.

New 3G module MU509-65 for North America

Category : 其他, 技术相关

  • This year, Huawei lanuched a new module for 3G network in North America. Here is the details:
  • Because the 2G network shutdown in the North America ‎gradually. Huawei propose the more competitive solution “MU509-65” to follow the network development trade in North America. The MU509-65 with US region 3G Band support. But remove 2G band and available in LGA form factor. Meanwhile, MU509-65 also certificated with FCC/PTCRB/IC and AT&T TA.The industrial-grade M2M application of MU509-65 is widely. Such as POS, tracking , safety monitor and wearable medical device. And MU509-65 supports 3.6Mbps downlink data rate. Including enhanced features like FOTA,UDP/TCP/FTP/HTTP stack and Huawei enhanced AT commands.
  • All Huawei modules comply with the RoHS directive and Regional certification.
  • The MU509-65 is the HSDPA module based on Qualcomm chipset. Which is high-quality designed HSDPA module in small size and Huawei standard LGA form factor. The standard form factor design provided the easy way to migrate from MU509-c, MU709 or ME909 family.
  • Size
Height

30mm

Width

30mm

Depth

2.57mm

Weight

approx 5.5 g

  • Form Factor
145-pin LGA
  • Bands
MU509-65 LGA

WCDMA dual-band: 850/1900 MHz

  • Data Transfer Rate
HSDPA: DL 3.6 Mbps / UL: 384 kbps

WCDMA CS: DL 64 kbps / UL 64 kbps

WCDMA PS: DL 384 kbps / UL 384 kbps

  • Interface
Antenna interface

USB 2.0 Full Speed

Power supply

Analog Audio

UART

SIM Card (1.8V/3.0V)

Reset

Multiple GPIOs

  • Power Supply
3.2 V to 4.2 V (3.8 V recommended)
  • Temp Range
-40℃ to 85℃
  • Voice
PCM Voice

DTMF

  • Special Features
FOTA

Embedded UDP/TCP/FTP(s)/HTTP(s) stack

  • Operating System
Linux, Android,
  • Approvals
FCC

PTCRB

IC

AT&T Certification

RoHS & WEEE Compliant