RC901-FE4E1 (version D) Fast-Ethernet to 4 E1 links Interface
Contents
1. ACT indicator keep winking But the connection is not working Please check work status of Ethernet port and networking device matching or not according to switch of front panel 6 Networking frame loss rate is very high possible reasons The duplex mode is not matching of converter and Ethernet TX ports Cabling connection false E1 interface impedance type is not matching There is some frame loss because the rate of Ping 1s beyond transmission rate of E1 You can increase parameter of timeout2. Testing Bit error ratio threshold When the BER exceed the threshold the yellow LED indicator is on and auto terminate transmission then Ethernet packets will not be transmitted in this E1 link Until this link reconnecting the green indicator is on the transmission resumes Two thresholds are provided in RC901 FE4E1 10 as default and 10 Compatibility Selection In order to be compatible with previous version REV A and REV B there is a version switch in version d When the version d interconnect with version A and B the version switch need to set to on however the new functions of c version are disabled Ethernet such as remote loop back etc 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 Setting of Ethernet port of converter switch etc 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 a Disable auto sensing function force port to 10M half Half duplex port duplex 10M half duplex will be obta
3. 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 Unbalanced SYV 75 2 2 coax up to 200m 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 Q Dene 1 2 3 4 5 6 7 8 120Q balanced interface connect with other equipment need specify the pin of the equipment The connection of UTP pin 1s shown below RC BALANCE RJ45 E1 balanced interface TDL Output TDL Output RDI Input RDI Input GND Ground Note TD and TD are always in one twisted pairs RD and RD are always in one twisted pairs 4 Operation Environment Temperature 0 45 C Humidity 5 90 non condensing 5 Power supply requirements AC DC AC AC 220v 50Hz range from165V to 265V DC DC 48v range from 36V tol 72V Power consumption 5W 6 Dimensions 440 43 6X 180mm standard 19 1U chassis mountable 7 DC power supply installation guide DC power supply module provides 3 connectors 48V Ground OV the connection of ground is necessary to the safety Chapter 4 Setting of switches 1 Set the DIP switches on the front panel OFF A set of 6 DIP switch is located on the front panel of the unit Refer to the table bel
4. RC901 FE4E1 version D Fast Ethernet to 4 E1 links Interface Converter Manual Beijing Raisecom Science amp Technology Co Ltd Contents Chapter 1 Overview Chapter 2 Connection Features Chapter 3 Guide of Installation Chapter 4 Setting of switches Chapter 5 Troubleshooting 13 Chapter 1 Overview 1 Description RC901 FE4E1 10 100M auto sensing Ethernet interface converter of Ethernet to 4E1 is one product of RC series converters made by Beijing Raisecom Science amp Technology Co Ltd It provides a simple solution to enable Ethernet access by using 4 El links for signal transmissions 2 Specifications 1 E1 Interface Type BNC 75 Q unbalanced RJ 45 120 Q balanced Bit rate 2048K bpst50ppm Line code HDB3 Compliance ITU T G703 ITU T G 823 Other features Real time BER detecting and Ellinks 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 default or 10 2 Fast Ethernet Interface Interface RJ 45 cat5 catSe cables available supports link distance up to 100m Bit rate selectable Auto sensing 1OM 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 filteri
5. al port Off Link is not in use It takes few seconds for detection when power is just on or when cables are connecting or disconnecting of El please wait patiently See front panel for switching setting UTP Ethernet interface Indicators LNK on Normal operation off no connection 100ML onl 1OOMbps offL 10Mbps LNK ACT ACT flash receiving or sending off no action FDX on Full duplex off Half duplex 100M UTP FDX UTP interface definition and connection see following text Chapter 2 Connection Features 1 Equipment interconnection l RC series interface converters are always working in pairs They have to be deployed in pairs as the models shown below Otherwise abnormal data transmission will occur Central Office Customer RC901 2 FE4E1 RC9OI FE4EL 2 Network equipment Ethernet port Connection features RC901 FE4E1 supports auto MDI MDIX crossover when UTP port is set to auto negotiation Switch and NIC can be connected by both direct line and cross line If UTP port is set to defined speed or Full duplex mode RC901 FE4E1 will lose this function The feature of that RC901 FE4E1 connects with other network equipment shown below RJ 45 connecting mode RC901 FE4E1 MID CATS RC901 FE4E1 MID CAT5 RC901 FE4E1 MIDX CATS RC901 FE4E1 Ethernet Card MIDX CATS Chapter 3 Guide of Installation 1 Make sure the E1 link cables are compatible with the RC901 FE4E1 If the El links
6. ined 10 100M Auto sensing port 10M Disable auto sensing function force port to 10M full duplex Full duplex port 10M full duplex will be obtained 10M a Enable auto sensing default function 100M full duplex Auto sensing will be obtained port Half duplex port duplex mode 100M half duplex will be obtained Full duplex port obtained Enable auto sensing function default 100M half duplex ee will be obtained Auto sensing port Disable auto sensing function force port to 100M half duplex mode 100M half duplex will be obtained See figures below for setting Forced 10M Full dupl OFF Ex factory fault function OFF ee bagi saa a 6 OFF 6 ON ON ON 7 OFF 67 7QOFF OFF Forced 10M Half duplex opp Forced 100M half duplex 6 ON af 6 OFF on 7 ON ON JON Fault pass though RC901 FE4E1 provides Fault Pass Though FPT function for special requirements In case of any El link was out of work RC901 FE4E1 could transmit the Ethernet packets in the other available E1 links automatically until all E1 links were not available And RC901 FE4E supports IEEE 802 3d Spanning Tree 2 Set the bottom panel switches Four sets of DIP switch located in the bottom panel are use to configure the impedance and the type of the E1 connector E1 interface side Bottom panel ON OFF ATH El link connector 75 ohm unbalanced BNC 1234 ON OFF LA E1 link connector 120 ohm balanced RJ 45 1234 Impedance and connect
7. isconnect 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 Panel and LED indicator BALANCE BALANCE BALANCE BALANCE BLLSICALLATLLSL LE 4 El ports aL Back panel A BU CU D 4 E1 link ports TX BNC 75Q unbalanced output RX BNC 75Q unbalanced input BALANCE RJ 45 120 Q balanced 1 2 pin output 5 6 pin input Note BNC unbalanced interface cannot be used concurrently with RJ 45 balanced interface The switches in bottom panel are used for setting the type of cables Default is 75 O BNC Power switch RAI SEGOM RC901 FE4E1 za SW LNK ACT Bo Bo oO A PwR E LNK LOS E A 100M FDX DIP Switch Ethernet port G LNK R LOS RF ERR Y CUT YF RAL PWR on power is on A B C D A BU C D 4 E1 links indicator color definitions Green G Normal Status LNK Red R The lost of signal LOS Red flasH RF Port is receiving alarm indication signal AIS and ERR from the sending device Yellow YL Link is disconnected due to the receiving of the error bits CUTU Yellow flash YF alarm due to remote device RAL but loc
8. ng 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 1 Forward features a Store and Forward mode For normal data transmission high resistance for bursty b Real time Forward mode For higher requirement in real time transmission ability for example image transmission time can be reduced However packet loss may occur Maximum forward speed in each E1 link supports up to 1920Kbps Maximum forward speed for 4 E1 link supports up to 1920x4 7680Kbps when fully loaded The forward bit rate is auto allocated depending on the real time status of E1 links 2 Bandwidth auto adjustment RC901 FE4E1 supports 1 4 E1 link bandwidth auto adjustment If any of the El 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 bandwidth is 8Mbps in total El link working means the two converters have no alarm occurs in E1 link 3 Fault Pass Though RC901 FE4E1 provides Fault Pass Though 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 d
9. or type in each El link can be set as the networks requirements Flexile configurations in 4 Ethernet ports enable the interface converter to meet various requirements in today dynamic networks Chapter 5 Troubleshooting If you meet some problem during installing and employing please deal with them by the following proposals If there is no answering for the question please contact with distributors for technical support 1 PWR indicator is down Answering PWR line is not connected or there is any error in the PS system 2 UTP LNK indicator is down Answering Please check the twisted pairs are good or damaged and the network device that is connected to the interface converter is running well or not Please check connection type is matching or not 1f you close auto sensing and auto identifying function of twisted pairs cable MDI MDIX then please use MDI type when connected to HUB or switch please use MDIX type when connected to router or networking card Please check the fault pass function is Enable or Disable If it is Enable it can make Ethernet port to close 3 E1 line indicator alarm If there is El line alarm please find the fault reason according to explaining of front panel indicator A Test way of E1 line bit error Configure remote loop back and local loop back through switch of front panel Please use loop back function carefully And avoid to bringing Ethernet broadcast storm 5L No alarm show LNK is light
10. ow for the proper setting of the DIP switch NOTE The switch is ON when it is in the DOWN position The switch 1s OFF when it is in the UP position Switch Function OFF default ON No l Remote loop back Disabled Enabled 2 Enabled 3 Bit error ratio 10 4 Version REV D REV A REV B Selection 5 Preserving 6 Ethernet operation 100Mbps when switch 5 ON 7 mode 10Mbps when switch 5 ON 3 Fault Pass Though Tk Remote loop back If any of El 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 Ethernet Remote Loop back Testing Local loop back Local loop back testing makes both local El and Ethernet signal loop back outward this function is designed for testing equipment interface Connecting El BERT 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 E1 link E1 bit error tester Sniffer Local Loop back
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