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RC902-FE4E1 fast Ethernet to 4 E1converter User guide Beijing Raisecom Science

RC902-FE4E1 fast Ethernet to 4 E1converter User guide Beijing Raisecom Science & Technology Co., ltd Content Chapter 1 Overview..............................................................................3 Chapter 2 Connection features..............................................................6 Chapter 3 Installation and test ..............................................................7 Chapter 4 Introduction of DIP-Switch..................................................8 Chapter 5 Troubleshooting .................................................................12 2 Chapter 1 Overview 1. Description RC902- FE4E1, 10/100M auto-sensing Ethernet interface converter of Ethernet to 4E1, is one product of RC series converters made by Beijing Raisecom Science & Technology Co. ltd. It provides a simple solution to enable Ethernet access by using 4 E1 links for signal transmissions. RC902-FE4E1 is modular device. It can provide central SNMP management solution, when it is plugged in RC002-16 that is 16 slot chassis. It can support remote management when it works in pair with RC901-FE4E1. 2. Specification 1）E1 interface： RJ-45 (120 Ω, balanced) Bit rate: 2048Kbps±50ppm Line code: HDB3 Compliance: ITU-T G.703, ITU-T G.823 Other features: Real-time BER detecting and E1links auto protection auto-reset Resistance for drift of 512UI, the ability of counteraction of jitter and drift Selectable BER threshold of link auto-reset: 10-6 (default) or 10-5 2）Fast Ethernet interface： Interface: RJ-45, cat5/cat5e cables available, supports link distance up to 100m Bit rate: selectable, Auto-sensing 10M/100Mbps or manual configuration Duplex type: Full/Half duplex auto-negotiation or manual configuration Compliance: IEEE 802.3、IEEE 802.3u Other features: Supports maximum frame size up to 1536 bytes Supports IEEE 802.3d Spanning Tree, 802.1q VLAN Supports 1K MAC address table, address filtering, improve efficiency of E1 link Supports Auto-MDI/MIDX auto-negotiation Supports Link Fault Pass-though (LFP) Provides 64Mbit SDRAM for reducing the network congestion. 3. Features 3 1）forward features Maximum forward speed in each E1 link supports up to 1920Kbps Maximum forward speed for 4 E1 link supports up to 1920×4=7680Kbps when fully loaded The forward bit rate is auto allocated, depending on the real-time status of E1 links. 2）Bandwidth auto-adjustment RC902-FE4E1 supports 1~4 E1 links bandwidth auto-adjustment. If any of the E1 links disconnected, or when it is just back to normal from disconnecting, transmission can be automatic achieved trough connecting E1 link and bandwidth can be adjusted automatically, but at least 1 E1 link has to connect. Every E1 link provides 2Mbps bandwidth. If 4 E1 links are working properly, 8M bandwidth can be provided in total. E1 link “working” means the two converters have no alarm occurs in E1 link. 3）Fault Pass Through RC901-FE4E1 provides Fault Pass Through (FPT) for special requirements, e.g. which need Spanning Tree, superior switch network management record. The FPT defined as: If alarm occur on all 4 E1 links, then all the links disconnect, FPT function will suspend the UTP port and disconnect the links with Ethernet switches and NIC, until any of E1 link no alarm occurred, then system is back to default status. FPT set “close” as default status, it is convenient for those customers who have no special requirements. Please see the manual about the switch setting of the panel if need it. 4. Front panel and LED indicator Ethernet interface E1 link ETH 100M LNK ACT FDX B A C D A B C D E1 balanced interface Indicator of Ethernet Bolt A、B、C、D 4 E1 links indicator color definitions: Green（G）： Normal Status（LNK） Red（R）： The lost of signal（LOS） 4 Red flash （RF）： Port is receiving alarm indication signal (AIS) and ERR from the sending device. Yellow（Y）： Link is disconnected due to the receiving of the error bits. （CUT） Yellow flash（YF）： alarm due to remote device（RAL）but local port. Off： Link is not in use Note: If A,B,C and D all don’t be connected, four links are all red. If A link has been connected, A link is green. Other link indicators are off. Then B link is connected, B link is green automatically. Green means that normal status. And so on. z A、B、C、D four E1 links are all balanced interface： RJ-45(120ohm balanced，1、2 pin output，5、6 pin input)。 UTP Ethernet interface： Indicators: LNK： on，Normal operation；off，no connection。 100M： on，100Mbps；off，10Mbps。 ACT： flash，receiving or sending；off，no action。 FDX： on Full duplex；off，Half duplex UTP: interface definition and connection see following text. 5 Chapter 2 Connection features 1. Equipment interconnection 2. We don’t suggest RC902-FE4E1 is connected with other brand products 3. Connection features on Ethernet port RC902-FE4E1 supports auto MDI/MDIX crossover, when UTP port is set to auto-negotiation. Switch and NIC can be connected by both straight line and cross line. If UTP port is set to define fixed speed or Full-duplex mode, RC901-FE4E1 will lose this function. The feature of that RC902-FE4E1 connects with other network equipment shown below. Part Number Host-site equipment RJ-45 connecting mode RC902-FE4E1 Switch Straight line CAT5 RC902-FE4E1 HUB Straight line CAT5 RC902-FE4E1 Router Cross line CAT5 RC902-FE4E1 Ethernet Card Cross line CAT5 6 Chapter 3 Installation and test 1.Make sure the E1-link cables are compatible with the RC901-FE4E1 If the E1 links with which you want to connect RC901-FE4E1 are combined with PDH or SDH equipments, please check the interface type of E1, definition and impedance of interface in relevant manuals. 2. Choose proper E1 link cables Balanced: 0.6mm(22AWG) twisted pairs, up to 1500m 3.BALANCE-RJ45 UTP E1 pin defined as shown below Refer to the table and figure below when use the balanced interface (120 Ω) PIN No. 1 2 3 4 5 6 7 8 Label TD+ TD- Not used Not used RD+ RD- Not used Not used Signification Output+ Output- Input+ Input- 120Ω balanced interface connect with other equipment, need specify the pin of the equipment. The connection of UTP pin is shown below. RC BALANCE-RJ45 E1 balanced interface TD＋ Output + TD－ Output- RD＋ Input+ RD－ Input－ Note: TD＋ and TD－ are always in one twisted pairs RD＋ and RD－ are always in one twisted pairs 4. Environment Temp: 0-45℃ Humidity: 5%~90% no condensing 5. Power supply AC: 220v/50Hz Voltage 165~265V DC: －48v Voltage －36~ －72V Power consumption ≤ 3W 7 OFF Chapter 4 Introduction of DIP-Switch ON 1 2 3 4 5 6 7 8 1. Setting of DIP-Switch There is a set of 8 bit DIP-Switch on PCB card. If you want to manage by software, the DIP-Switch must be default setting. Definition OFF (default setting) ON 1 bit: remote loop-back Disable Enable 2 bit: local loop-back Disable Enable 3bit: Bit error ratio threshold Don’t shut down Auto shut down when error bit is more than 10-6. 4bit: choice of compatibility 5bit: reserved 6bit: configuration of Eth 7bit: configuration of Eth Shown as table and figure below 8bit: fault pass Disable Enable Remote loopback: If any of E1 is linking with remote equipment (the indicator is green ), network administrator can run the remote loop-back testing function (turn on the switch no.1), enabling network operators to diagnose the E1 links though a Bit Error Tester at a central location without sending a technician to the remote site. Ethernet packets of both Local and remote site are isolated, can’t be forward to E1 interface. 8 E link Local Converter Remote Converter A link A link Ethernet Ethernet B link B link C link C link D link D link Error tester Error tester Error tester Remote Loop-back Testing Local loop-back: Local loop-back testing makes both local E1 and Ethernet signal loop-back outward, this function is designed for testing equipment interface. Connecting E1 误码仪 is for testing E1 interface; Sniffer is for diagnosing Ethernet interface. Note, Ethernet data also loop-back during local loop-back, it easy to make broadcast storm which occurred in Ethernet switches connected with local equipment. In case to avoid broadcast storm, disconnect with switch before loop-back. Local Loop-back Testing Sniffer D port C port B port E1 误码仪 A port E1 link z Bit error ratio threshold When it enable and error bit ratio exceeded more than 10-6 , indicator is yellow and shut down the service. Traffic is provided by other E1 channels, until that E1 channel is available. 9 Ethernet operation mode The Ethernet port is default as auto-sensing and provides auto MDI/MDIX crossover function. If need change the status of port, please refer to the table shown below for setting. Connecting equipment (NIC, switch etc.) Setting of Ethernet port of converter 10/100M Auto-sensing port a. Enable auto-sensing (default) function, 100M full duplex (common mode) will be obtained. b. Disable auto-sensing function, force port to 10M half duplex mode. 10M half-duplex will be obtained. c. Disable auto-sensing function, force port to 10M full duplex mode. 10M full-duplex will be obtained. d. Disable auto-sensing, force port to 100M half duplex mode. 100M half-duplex will be obtained . 10M Half duplex port a. Disable auto-sensing function, force port to 10M half duplex. 10M half duplex will be obtained. 10M Full duplex port Disable auto-sensing function, force port to 10M full duplex. 10M full duplex will be obtained. 10M Auto-sensing port a. Enable auto-sensing (default) function, 100M full duplex will be obtained. 100M Half duplex port a. Disable auto-sensing function, force port to 100M half duplex mode. 100M half-duplex will be obtained. 100M Full duplex port a. ex-factory default function, 100M full duplex will be obtained. 100M Auto-sensing port a. Enable uploads/Management/ rc902-fe4e1-fast-ethernet-to-4-e1converter-beijing-raisecom-science-amp-technology-co-ltd.pdf