ME-S4008 8口100M工业以太网光纤交换机
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工业级1个千兆光口+8个10/100M电口光纤交换机产品简介:TBC-GF2709-SFP系列工业级以太网交换机配有1个千兆光口和8个10/100M以太网电口,支持IEEE802.3、IEEE802.3x、IEEE802.3u 标准,支持、全双工/半双工、MDI/MDI-X 自适应。
LED灯系统状态指示,可以帮助系统维护者监控网络的连接状况。
产品特点:支持1个千兆光口和8个10/100M以太网电口支持IEEE 802.1q,VLAN端口隔离功能支持IEEE802.3、IEEE802.3x、IEEE802.3u标准,支持、全双工/半双工、MDI/MDI-X自适应防雷等级:电源接口四级防雷采用工业级标准设计:-40 至85°C工作温度和冗余双电源输入(18-36V DC)防护等级:IP40,铝制机箱散热表面设计,无风扇,无散热孔技术参数:技术参数参数描述接口SFP端口:100Base-FX,1000Base-X,10/100/1000Base-T(X) SFP接口百兆电口:10/100 Base-T(X)自适应以太网RJ45接口电源要求输入电压: 24V DC (18-36V DC),冗余双电源输入接入端子: 6芯5.08mm间距插入式端子功率电流: <0.5A@24VDC过载保护:支持反接保护:支持冗余保护:支持机械特性外壳:铝制机箱散热表面设计,无风扇,IP40 防护等级尺寸:143*103*47 mm重量:655g安装方式:导轨安装/壁挂式安装工作环境工作温度:-40℃~+85℃储存温度:-40℃~+85℃相对湿度:5~95%无凝露工业级以太网交换机系列1/2。
RS608百兆系列工业以太网交换机硬件安装说明书©copyright2016by Shenzhen Wintop Optical Technology Co.,Ltd.All rights reserved.事先未征得深圳市源拓光电技术有限公司(以下简称源拓光电)的书面同意,任何人不得以任何方式拷贝或复制本文档中的任何内容。
源拓光电不做与本文档相关的任何保证,不做商业性、质量或特定用途适用性的任何隐含保证。
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深圳市源拓光电技术有限公司Shenzhen Wintop Optical Technology Co.,Ltd.为保证安全、正确、高效地使用装置,请务必阅读以下重要信息:1.装置的安装调试应由专业人员进行;2.装置上电使用前请仔细阅读说明书。
应遵照国家和电力行业相关规程,并参照说明书对装置进行操作、调整和测试。
如有随机材料,相关部分以资料为准;3.装置上电前,应明确连线与正确示图相一致;4.装置应该可靠接地;5.装置施加的额定操作电压应该与铭牌上标记的一致;6.严禁无防护措施触摸电子器件,严禁带电插拔端子、拆卸机箱;7.接触装置端子,要防止电触击;8.如要拆装装置,必须保证断开所有的外部端子连接。
否则,触及装置内部带电部分,将可能造成人身伤害;9.对装置进行测试时,应使用可靠的测试仪;10.装置的运行参数和定值同样重要,应准确设定才能保证装置功能的正常运行。
本说明书适用于RS608百兆系列工业以太网交换机。
本说明书包含技术内容介绍和现场调试大纲。
本说明书仅适用于RS608百兆系列工业以太网交换机V1.0.0.1及以上版本软件。
产品说明书版本修改记录表1098765432V1.1修正本文中的错误描述V1.02016/04 1V1.0RS608百兆系列工业以太网交换机说明V1.0.02015/12序号说明书版本号修改摘要初始软件版本号修改日期*技术支持:电话(0755)26641737*传真(0755)26640197**本说明书可能会被修改,请注意核对实际产品与说明书是否相符安全声明 (2)版本声明 (3)前言 (1)1.命令行格式约定 (1)2.标志 (1)第1章产品介绍 (2)1.1.概述 (2)1.2.功能特性 (2)1.3.系统特性 (3)1.4.面板说明 (4)1.4.1.前面板 (4)1.4.2.后面板 (5)1.5.电源系统 (5)1.6.前面板指示灯介绍 (5)1.7.物料清单 (6)第2章产品安装 (6)2.1.注意事项 (6)2.2.安装方式 (6)2.2.1.导轨式安装 (6)2.3.电源供电 (8)2.3.1.电源输入结构图 (8)2.3.2.电源输入端子 (8)2.3.3.告警继电器输出端子 (8)2.3.4.RS232控制端口(Console) (9)2.3.5.接地 (9)第3章产品管理 (10)3.1.CLI管理 (10)3.1.1.串口概述 (10)3.2.通过Console口登录交换机 (10)3.3.Telnet管理 (12)3.4.NMS管理 (13)订货须知 (13)订货应注明: (13)1.命令行格式约定格式意义[...]表示用“[]”括起来的部分在命令配置时是可选的。
EDS-608Series8-port compact modular managed EthernetswitchesFeatures and Benefits•Modular design with4-port copper/fiber combinations•Hot-swappable media modules for continuous operation•Turbo Ring and Turbo Chain(recovery time<20ms@250switches),and STP/RSTP/MSTP for network redundancy•TACACS+,SNMPv3,IEEE802.1X,HTTPS,and SSH to enhance network security•Easy network management by web browser,CLI,Telnet/serial console, Windows utility,and ABC-01•Supports MXstudio for easy,visualized industrial network managementCertificationsIntroductionThe versatile modular design of the compact EDS-608Series allows users to combine fiber and copper modules to create switch solutions suitable for any automation network.The EDS-608’s modular design lets you install8Fast Ethernet ports,and the advanced Turbo Ring and Turbo Chain (recovery time<20ms)technology,RSTP/STP,and MSTP help increase the reliability and availability of your industrial Ethernet network.Models with an extended operating temperature range of-40to75°C are also available.The EDS-608Series supports several reliable and intelligent functions,including EtherNet/IP,Modbus TCP,LLDP,DHCP Option82,SNMP Inform,QoS,IGMP snooping,VLAN,TACACS+,IEEE 802.1X,HTTPS,SSH,SNMPv3,and more,making the Ethernet switches suitable for any harsh industrial environment.Additional Features and Benefits•Command line interface(CLI)for quickly configuring majormanaged functions•SNMP Inform for ensuring reliable event management•LLDP for automated topology discovery•DHCP Option82for IP address assignment with different policies•EtherNet/IP and Modbus TCP protocols for device managementand monitoring•Compatible with PROFINET protocol for transparent datatransmission•Automatic warning by exception through email and relay output•IGMP snooping and GMRP for filtering multicast traffic•Port-based VLAN,IEEE802.1Q VLAN,and GVRP to ease networkplanning•QoS(IEEE802.1p/1Q and TOS/DiffServ)to increase determinism•Port Trunking for optimum bandwidth utilization•SNMPv1/v2c/v3for different levels of network management•RMON for proactive and efficient network monitoring•Bandwidth management to prevent unpredictable network status•Lock port function for blocking unauthorized access based on MACaddress•Port mirroring for online debuggingSpecificationsInput/Output InterfaceDigital Inputs+13to+30V for state1-30to+3V for state0Max.input current:8mAAlarm Contact Channels Relay output with current carrying capacity of1A@24VDCEthernet InterfaceModule2slots for any combination of4-port interface modules,10/100BaseT(X)or100BaseFX Standards IEEE802.1D-2004for Spanning Tree ProtocolIEEE802.1p for Class of ServiceIEEE802.1Q for VLAN TaggingIEEE802.1s for Multiple Spanning Tree ProtocolIEEE802.1w for Rapid Spanning Tree ProtocolIEEE802.1X for authenticationIEEE802.3for10BaseTIEEE802.3ad for Port Trunk with LACPIEEE802.3u for100BaseT(X)and100BaseFXIEEE802.3x for flow controlEthernet Software FeaturesFilter GMRP,GVRP,IGMP v1/v2,Port-based VLANIndustrial Protocols EtherNet/IP,Modbus TCPManagement Back Pressure Flow Control,BOOTP,DHCP Option66/67/82,DHCP Server/Client,Flowcontrol,IPv4/IPv6,LLDP,Port Mirror,RARP,RMON,SMTP,SNMP Inform,SNMPv1/v2c/v3,Syslog,Telnet,TFTPMIB Bridge MIB,Ethernet-like MIB,MIB-II,P-BRIDGE MIB,Q-BRIDGE MIB,RMON MIBGroups1,2,3,9,RSTP MIBRedundancy Protocols Link Aggregation,MSTP,RSTP,STP,Turbo Chain,Turbo Ring v1/v2Security Broadcast storm protection,HTTPS/SSL,Port Lock,RADIUS,SSH,TACACS+Time Management NTP Server/Client,SNTPSwitch PropertiesIGMP Groups256MAC Table Size8KMax.No.of VLANs64Packet Buffer Size1MbitsPriority Queues4VLAN ID Range VID1to4094LED InterfaceLED Indicators PWR1,PWR2,FAULT,MSTR/HEAD,CPLR/TAILSerial InterfaceConsole Port RS-232(TxD,RxD,GND),8-pin RJ45(115200,n,8,1)DIP Switch ConfigurationEthernet Interface Turbo Ring,Master,Coupler,ReservePower ParametersConnection1removable6-contact terminal block(s)Input Voltage12/24/48VDC,Redundant dual inputsOverload Current Protection SupportedReverse Polarity Protection SupportedPhysical CharacteristicsIP Rating IP30Dimensions125x151x157.4mm(4.92x5.95x6.20in) Weight1,950g(4.30lb)Installation DIN-rail mounting,Wall mounting(with optional kit) Environmental LimitsOperating Temperature EDS-608:0to60°C(32to140°F)EDS-608-T:-40to75°C(-40to167°F)Storage Temperature(package included)-40to85°C(-40to185°F)Ambient Relative Humidity5to95%(non-condensing)Standards and CertificationsFreefall IEC60068-2-32EMC EN55032/35,EN61000-6-2/-6-4EMI CISPR32,FCC Part15B Class AEMS IEC61000-4-2ESD:Contact:6kV;Air:8kVIEC61000-4-3RS:80MHz to1GHz:10V/mIEC61000-4-4EFT:Power:4kV;Signal:4kVIEC61000-4-5Surge:Power:2kV;Signal:2kVIEC61000-4-6CS:10VIEC61000-4-8PFMFHazardous Locations ATEX,Class I Division2Maritime ABS,DNV-GL,LR,NKRailway EN50121-4Safety EN62368-1,UL508Shock IEC60068-2-27Traffic Control NEMA TS2Vibration IEC60068-2-6MTBFTime596,219hrsStandards Telcordia(Bellcore),GBWarrantyWarranty Period5yearsDetails See /warrantyPackage ContentsDevice1x EDS-608Series switchCable1x RJ45-to-DB9console cableDocumentation1x product certificates of quality inspection,Simplified Chinese1x product notice,Simplified Chinese1x quick installation guide1x warranty cardNote Modules from the CM-600Module Series need to be purchased separately for use withthis product.DimensionsOrdering InformationModel Name Layer Total No.of PortsModule10/100BaseT(X)and/or100BaseFXOperating Temp.EDS-608282slots for up to810/100BaseT(X)and/or100-BaseFX ports0to60°CEDS-608-T282slots for up to810/100BaseT(X)and/or100-BaseFX ports-40to75°CAccessories(sold separately)CM-600Module SeriesCM-600-4TX Fast Ethernet interface module with410/100BaseT(X)ports,RJ45connectors,-40to75°C operatingtemperatureCM-600-4MSC Fast Ethernet interface module with4100BaseFX multi-mode ports,SC connectors,-40to75°Coperating temperatureCM-600-4MST Fast Ethernet interface module with4100BaseFX multi-mode ports,ST connectors,-40to75°Coperating temperatureCM-600-4SSC Fast Ethernet interface module with4100BaseFX single-mode ports,SC connectors,-40to75°Coperating temperatureCM-600-3MSC/1TX Fast Ethernet interface module with110/100BaseT(X)port,RJ45connector,and3100BaseFX multi-mode ports,SC connectors,-40to75°C operating temperatureCM-600-3SSC/1TX Fast Ethernet interface module with110/100BaseT(X)port,RJ45connector,and3100BaseFX single-mode ports,SC connectors,-40to75°C operating temperatureCM-600-2MSC/2TX Fast Ethernet interface module with210/100BaseT(X)ports,RJ45connectors,and2100BaseFXmulti-mode ports,SC connectors,-40to75°C operating temperatureCM-600-2SSC/2TX Fast Ethernet interface module with210/100BaseT(X)ports,RJ45connectors,and2100BaseFXsingle-mode ports,SC connectors,-40to75°C operating temperatureStorage KitsABC-01Configuration backup and restoration tool for managed Ethernet switches and AWK Series wirelessAPs/bridges/clients,0to60°C operating temperaturePower SuppliesDR-120-24120W/2.5A DIN-rail24VDC power supply with universal88to132VAC or176to264VAC input byswitch,or248to370VDC input,-10to60°C operating temperatureDR-452445W/2A DIN-rail24VDC power supply with universal85to264VAC or120to370VDC input,-10to50°C operating temperatureDR-75-2475W/3.2A DIN-rail24VDC power supply with universal85to264VAC or120to370VDC input,-10to60°C operating temperatureMDR-40-24DIN-rail24VDC power supply with40W/1.7A,85to264VAC,or120to370VDC input,-20to70°Coperating temperatureMDR-60-24DIN-rail24VDC power supply with60W/2.5A,85to264VAC,or120to370VDC input,-20to70°Coperating temperatureSoftwareMXview-50Industrial network management software with a license for50nodes(by IP address)MXview-100Industrial network management software with a license for100nodes(by IP address)MXview-250Industrial network management software with a license for250nodes(by IP address)MXview-500Industrial network management software with a license for500nodes(by IP address)MXview-1000Industrial network management software with a license for1000nodes(by IP address)MXview-2000Industrial network management software with a license for2000nodes(by IP address)MXview Upgrade-50License expansion of MXview industrial network management software by50nodes(by IP address) Wall-Mounting KitsWK-75Wall-mounting kit,2plates,8screws,75x90x2.5mm©Moxa Inc.All rights reserved.Updated Jan11,2021.This document and any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of Moxa Inc.Product specifications subject to change without notice.Visit our website for the most up-to-date product information.。
包装盒内容此包装盒包含:8 口百兆交换机 FS208交流电源适配器安装指南(本文档)。
准备安装交换机确定安装交换机的位置。
找一处水平台面,如桌子、台子或架子。
确保选择的位置:•不处于阳光直射下或靠近热源或暖风。
•不杂乱或拥挤。
交换机各面距周围至少有 2 英寸(5 厘米)远。
•通风良好(特别是在柜子中)。
根据网络设备的速度,您需要对每台要连接到交换机的设备使用带有 RJ-45 接头的三类 (10 Mbps) 或五类 (100 Mbps) 以太网线。
每条以太网线的长度应小于 328 英尺(100 米)。
安装交换机并连接设备1.在平整的表面上安装交换机。
2.对于每台设备,请插入以太网线的一端3.将电源适配器连接到交换机的后部然后将适配器插入到电源中(例如墙壁插座或电源板)。
调制解调器4.检查•电源 LED 灯会亮起。
•每个RJ-45 插孔都有一个 LED 灯。
对于每个已连接到加电设备的插孔,LinkLED 灯都会亮起,并且当发生活动时 LED 灯会闪烁。
注意:如果 LED 灯不能按本文所述正常运作,请转到“故障诊断”部分。
技术规格标准兼容性•IEEE 802.3u 100BASE-TX 快速以太网•IEEE 802.3i 10BASE-T 以太网•IEEE 802.3x 流控制•IEEE 802.3az EEE 高能效以太网网络接口适用于 10BASE-T 和 100BASE-TX 以太网接口的 RJ-45 连接器电源最大 6W,12V 0.5A 直流电源输入功耗(最大值) 2.7W尺寸152 x 93 x 26 毫米重量0.13 千克操作温度0° 到 40° C(32° 到 104° F)操作湿度最大相对湿度 90%,无冷凝电源适配器安全机构认证CCC性能规格帧过滤率最高 14,880 帧/秒(10 M 端口);最高 148,800 帧/秒(100M 端口)帧转发率最高 14,880 帧/秒(10 M 端口);最高 148,800 帧/秒(100M 端口)网络延迟(使用 64 位包)•100Mbs:12 µs•10Mbs:85 µs地址库大小1K MAC 地址队列缓冲内嵌 768 Kbit故障诊断确保您正在使用交换机附带的电源适配器为交换机供电。
EDS-2008-EL Series8-port entry-level unmanaged Ethernet switchesFeatures and Benefits•10/100BaseT(X)(RJ45connector)•Compact size for easy installation•QoS supported to process critical data in heavy traffic•IP40-rated metal housing•-40to75°C wide operating temperature range(-T models)CertificationsIntroductionThe EDS-2008-EL series of industrial Ethernet switches have up to eight10/100M copper ports,which are ideal for applications that require simple industrial Ethernet connections.To provide greater versatility for use with applications from different industries,the EDS-2008-EL Series also allows users to enable or disable the Quality of Service(QoS)function,and broadcast storm protection(BSP)with DIP switches on the outer panel. In addition,the EDS-2008-EL Series has a rugged metal housing to ensure suitability for use in industrial environments and fiber connections (Multi-mode SC or ST)can also be selected.The EDS-2008-EL Series has a12/24/48VDC single power input,DIN-rail mounting,and high-level EMI/EMC capability.In addition to its compact size,the EDS-2008-EL Series has passed a100%burn-in test to ensure it will function reliably after it has been deployed.The EDS-2008-EL Series has a standard operating temperature range of-10to60°C with wide-temperature(-40to75°C)models also available.SpecificationsEthernet Interface10/100BaseT(X)Ports(RJ45connector)EDS-2008-EL:8EDS-2008-EL-M-ST:7EDS-2008-EL-M-SC:7Full/Half duplex modeAuto MDI/MDI-X connectionAuto negotiation speed100BaseFX Ports(multi-mode SC connector)EDS-2008-EL-M-SC:1100BaseFX Ports(multi-mode ST connector)EDS-2008-EL-M-ST:1Standards IEEE802.3for10BaseTIEEE802.3u for100BaseT(X)and100BaseFXIEEE802.3x for flow controlIEEE802.1p for Class of ServiceSwitch PropertiesProcessing Type Store and ForwardMAC Table Size8KPacket Buffer Size4MbitsDIP Switch ConfigurationEthernet Interface Quality of Service(QoS),Broadcast Storm Protection(BSP)Power ParametersConnection1removable2-contact terminal block(s)Input Current EDS-2008-EL:0.067A@24VDCEDS-2008-EL-M-ST/EDS-2008-EL-M-SC:0.105A@24VDCInput Voltage12/24/48VDCOperating Voltage9.6to60VDCOverload Current Protection SupportedReverse Polarity Protection SupportedPhysical CharacteristicsInstallation DIN-rail mounting,Wall mounting(with optional kit)Weight163g(0.36lb)Housing MetalDimensions EDS-2008-EL:36x81x65mm(1.4x3.19x2.56in)EDS-2008-EL-M-ST:36x81x70.9mm(1.4x3.19x2.79in)EDS-2008-EL-M-SC:36x81x67.9mm(1.4x3.19x2.67in)Environmental LimitsAmbient Relative Humidity5to95%(non-condensing)Operating Temperature EDS-2008-EL/EDS-2008-EL-M-SC/EDS-2008-EL-M-ST:-10to60°C(14to140°F)EDS-2008-EL-T/EDS-2008-EL-M-SC-T/EDS-2008-EL-M-ST-T:-40to75°C(-40to167°F) Storage Temperature(package included)-40to85°C(-40to185°F)Standards and CertificationsSafety UL61010-2-201,EN62368-1(LVD)EMC EN55032/35EMI CISPR22,32,FCC Part15B Class AEMS IEC61000-4-2ESD:Contact:6kV;Air:8kVIEC61000-4-3RS:80MHz to1GHz:20V/mIEC61000-4-4EFT:Power:2kV;Signal:2kVIEC61000-4-5Surge:Power:2kV;Signal:2kVIEC61000-4-6CS:10VIEC61000-4-8PFMFShock IEC60068-2-27Vibration IEC60068-2-6Freefall IEC60068-2-32MTBFTime3,472,660hrsStandards Telcordia(Bellcore),GBWarrantyWarranty Period5yearsDetails See /warrantyPackage ContentsDevice1x EDS-2008Series switch Documentation1x quick installation guide1x warranty card DimensionsEDS-2008-ELEDS-2008-EL-M-SCEDS-2008-EL-STOrdering InformationModel Name 10/100BaseT(X)Ports(RJ45connector)10/100BaseFX Ports(Multi-mode SC)10/100BaseFX Ports(Multi-mode ST)Housing Operating TemperatureEDS-2008-EL8--Metal-10to60°CEDS-2008-EL-M-SC71-Metal-10to60°CEDS-2008-EL-M-ST7-1Metal-10to60°CEDS-2008-EL-T8--Metal-40to75°CEDS-2008-EL-M-SC-T71-Metal-40to75°CEDS-2008-EL-M-ST-T7-1Metal-40to75°C Accessories(sold separately)Power SuppliesDR-120-24120W/2.5A DIN-rail24VDC power supply with universal88to132VAC or176to264VAC input byswitch,or248to370VDC input,-10to60°C operating temperatureDR-452445W/2A DIN-rail24VDC power supply with universal85to264VAC or120to370VDC input,-10to50°C operating temperatureDR-75-2475W/3.2A DIN-rail24VDC power supply with universal85to264VAC or120to370VDC input,-10to60°C operating temperatureMDR-40-24DIN-rail24VDC power supply with40W/1.7A,85to264VAC,or120to370VDC input,-20to70°Coperating temperatureMDR-60-24DIN-rail24VDC power supply with60W/2.5A,85to264VAC,or120to370VDC input,-20to70°Coperating temperatureWall-Mounting KitsWK-18Wall-mounting kit,1plate,18x120x8.5mm©Moxa Inc.All rights reserved.Updated Feb07,2020.This document and any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of Moxa Inc.Product specifications subject to change without notice.Visit our website for the most up-to-date product information.。
机架式非网管工业以太网交换机
ME-S4008 8口100M工业以太网光纤交换机
■产品介绍:
ME-S4008是一款可灵活配置光电数量的8口光纤交换机,定位于工业级产品,面向电力通信、工业控制,数据宽带网和光纤接入网,提供全面的IP宽带接入解决方案。
该系列工业以太网交换机整机性能优异,可达到全线速转发。
该交换机提供100M光接口、10/100M电接口,支持的传输距离有2km(多模)、20km、40km、60km和120km。
提供最大8个光接口或8个电接口,光接口单、多模可选,电接口10/100M以太网自适应兼容。
特别适合小容量网络光纤接入系统,可简化网络结构,提高网络系统可靠性和节省成本。
同时该系列交换机针对散热做了专门设计、加大工作温度范围和电源电压范围、加强了抗电压波动干扰的能力等,增强了对使用环境的适应能力。
由于采用光纤技术,所以避免了由于不同节点地电位不同引起的设备烧毁和强电磁感应、高电压引起的干扰,并可安全工作在要求防爆的环境中。
该交换机已广泛应用在电力配网自动化、工业现场过程控制、数据采集及自动化、电信数据接入、监控系统等各行各业。
■功能特性:
遵循IEEE802.3 10BASE-T以太网及IEEE802.3u 100BASE-TX/FX 快速以太网标准
对所有的协议透明支持,如:TCP/IP、IPX、XNS、Appletalk、Vines、DECnet、ARP、DECLAT、Lansoft等
8个高性能的网络端口,可以任意组合光口(100M,多模/单模)和电口(10/100Mbps)数量
电口自动MDI/MDIX交叉
所有端口无阻塞存储转发交换模式,自适应及全/半双工能力,即全双工流量控制/半双工背压式流量控制
自动包转发/过滤速率:线速,每个端口148,800 pps(100Mbps)动态缓存区:1M MAC地址表:1K
提供最大带宽至2Gbps 100%数据转发率
广播风暴过滤
线速过滤/转发
MAC地址学习:自动学习、自动刷新
网络标准:IEEE 802.310BASE-T;IEEE 802.3u 100BASE-TX 100BASE-FX;IEEE 802.1DSPD;IEEE 802.1p,Priority Queue;IEEE 802.3x
■技术参数:
■订货信息:
本站索引引导词:
工业以太网收发器、工业以太网交换机、卡轨式工业以太网交换机、自愈环以太网交换机、电力专用工业以太网交换机、工业直流交换机、全光口交换机、千兆交换机、光纤网卡、GBIC/SFP光纤模块;接口转换器、协议转换器、电话数据综合光端机、PCM综合接入复用设备、4U综合接入机箱;10M收发器、10/100M收发器、10/100/1000M光纤收发器、单纤光纤收发器、光纤模式转换器。