H0EL-EthMux V4
Contents
1. Upink1 Dow 18 Mbpe Systems Ethernet forest HALF Auto i Uplmk2 LCI 10 Mbps HALF Auto sad Data UF LOO Mbps FULL Auto ia Daa UF 100 Mbpa FULL Auto Fig 5 3 3 Ethernet management Table 5 3 3 Ethernet management parameters Selection S Parameters Link Speed 10 1 ae Eth Port Duplex Status Mode Explanation 4 Ethernet ports status indication Port 4 Ethernet ports Link indicate current Ethernet link Up Down Speed 10 100Mbps indicate current Ethernet port speed Duplex indicate current Ethernet work mode half full 4 Ethernet ports work mode configuration adaptive default 100Mfull 10Mfull 100M half 10M half MX 120 User Manual V1 1 9 www vaidsys ru SYSTEMS SNMP Configuration Information ae Value Equipment Status ee ine Status Far End Status Ethernet Status Power Status Line Status Alarm Log SNMP Enable Traps Line Test SNMP Community public Line Loopback SNMP Write Community private SNMP Trap Community trap SNMP Port Number 161 Configuration SNMP Trap Address and Port MP Configuration Attribute Trap 1 0000 162_ l Trap 2 0 0 0 0 162 System twork Management Trap 3 0 0 0 0 162 Trap 4 0 0 0 0 162 default Parameter Trap 5 0 0 0 0 162 Set ee Time Fig 5 3 4 SNMP management Table 5 3 4 SNMP management Explanation Enable disable trap four alarms 1 E1 line status LOS and AIS EI Line Status 22. 3 4 5 6 7 8 Note The uplink port link parallel cable to LAN bridge WARNING When connecting to a wireless LAN bridge the uplink Ethernet cable often connects to the outdoor unit posing danger to lightning strikes that can seriously damage the equipment To protect the equipment as well as people surge protection devices with good earth connection is strongly recommended Poor earth connection may also hinder the operation of the Ethernet port causing severe packet losses She MX 120 User Manual V1 1 www vaidsys ru SYSTEMS 4 LJCommon faults This paragraph describes common mistakes and faults that may occur during installation and maintenance Please seek support from Beijing Huahuan Electronics Co Ltd for other problems 4 1 El Alarms There are two groups of LEDs PKT LOS and LOS for EI alarms LEDs When EI LOS LED is on loss of El signal fault is detected by EthMux Possible causes include The downstream equipment such as telephone exchange or PCM terminal is powered off The El cable connection looses or broken EI LOS LED blinks when respective input E1 signal is AIS 1 e the content of El data is all 1 s Such alarm indicates fault conditions on the part of the downstream equipment EI LOS site 1s controlled by Dip Switch RA state When RA Dip Switch ON the red LEDs indicate remote El LOS state When RA Dip Switch OFF the red LEDs indicate local EI LOS state The El PKT L
3. DE Explanations Parameters Jitter absorption buffer worked with the link with bigger jitter used to buffer the receiving packets Jitter Buffer 2 120ms Coming packets buffer to eliminate jitter Range 2 120ms Default 16ms From remote Select coresponding relation of local El ports to remote El port service Note The sentence T underline is default settings www vaidsys ru Line VLAN Configuration Status Enable VLAN Priority VLAN ID quipment Stz Line Status Alarm Log Line Test Submit reset ine A610 0101 104 lt a Local Data VLAN Configuration re Enable VLAN Priority TS Line Management Data2 1 1 Vlan Management Data l Monitor 2 Eh Port Status Fig 5 3 2 VLAN management Table 5 3 2 VLAN management parameters Selection Explanation Parameters k Yes with VLAN tag support the VLAN network with Paani riority t rantee E1 QoS VLAN priority to guarantee oS El VLAN default No no VLAN tag VLAN Configuration Priori ty Define users priority including 8 levels 0 7 the M number is bigger the priority is higher Default 5 aa aac VLAN identify section support 4096 VLAN identity t Van I Range 0 4095 Default 2662 Local Data2 Add vlan tag in local Ethernet service packet the selection is as EI VLAN Configuration default disable Data VLAN Datal me Configuration vlan priority 0 valn ID 1 18 MX 120 User Manual V1 1 www vaidsys ru
4. EI packets loss Les SNMP Enable El packet Loss ET ETENEE d Traps Ethernet Status LD moreno Power Status 4 power status Default selection status should report the alarms initiatively Read equipment node information password read only Default public SNMP Community Managed equipment node information password default private Receive information Trap password Default SNMP Write Community SNMP Trap Communit irap The communication port of equipment and SNMP management the default SNMP port is 161 SNMP Port Number 20 MX 120 User Manual V1 1 www vaidsys ru SYSTEMS Explanation Configure to equipment address and port number that received Trap information Set 5 address and ports at best that is the SNMP Trap managed ports can send Trap information for 5 SNMP Trap Address managed equipment at best SNMP Trap Address need to be configured in the first time initialized 0 but it can be saved Address and Port SNMP Trap Port and resumed SNMP Trap Port default is 162 also can be saved and resumed 5 3 2 Service configuration indication 1 The actual output rate should correspond to the transmission bandwidth If the transmission bandwidth is smaller than actual uplink rate El errors will occur So we set the maximum bandwidth of uplink line When the uplink is higher than actual El rate the difference value is Ethernet access rate When the uplink is lower than actual El r
5. Table 2 3 2 3 Table 2 3 2 3 El alarm indicator LOS indicator for 4 E1 ports On LOS respectively Local RA is off Off Normal or disable Remote RA is on Blink AIS On Ethernet packet loss E packet loss indicator Off Normal Blink E1 Packet Loss Fifth group Far end equipment link state indicator FAR END UP 1 4 are the UP DOWN status indicators of 1 4 different destination MAC addresses Table 2 3 2 4 Far end equipment link state indicator packet communication status On Normal Remote MAC Number of remote different attained MACs connected with local Off Remote MAC unattained Slave mode n 1 master mode while ARP is activated or n 2 4 at local end disable 2 3 1 Dip Switches Definition There are four Dip Switches on the front panel the definition show as Table 2 3 1 1 Table 2 3 1 1 Dip Switches Definition MX 120 User Manual V1 1 7 Www vaidsys ru SysteMs Dip Definition DIP 1 RA ON 4 red LEDs indicate remote E1 alarm state OFF 4 red LEDs indicate local EI alarm state DIP 2 Reserved DIP 3 Reserved ON Default IP address 192 192 192 192 OFF User set IP address 2 4 Rear panel The rear panel of MX 120 is depicted in Fig 2 4 1 ALARM datai data uplinktuplink 5 CCE oo Oo Lo a EE Alarm ET port 1 20ohm local port uplink port ACY power w220Y power b 2 4 1 System alarm The MX 120 can output system alarms for maintenance purposes There are 2 alarm output
6. good ground 3 2 2 El connection The El ports on MX 120 are used for connecting to El equipment such as the telephone exchange or PCM terminals Four El Ports Supported E1 ports impendence are E1 120Q for twisted pair cables or 75Q for coax The E1 120Q RJ45 sockets are default for ports 10 MX 120 User Manual V1 1 SYSTEMS www vaidsys ru The E1 120Q connection cable is made with RJ45 connectors and a length of 4 pair twisted cable The cable is not provided with the equipment and the user is responsible for making such cables in the field with length suitable for a particular installation The signal definition is given in Table 3 2 2 1 and pin order is depicted in Fig 3 2 2 1 Note that pin 1 and pin 2 should use the same twisted pair so should pin 4 and pin S TT 1 COPD Fig 3 2 2 1 RJ4S pin order Table 3 2 2 1 120Q ET signal definition EI OUT 6ND The RJ45 ae are default for E1 120Q the 4 jumpers of CNM26 CNM25 CNM24 CNM20 in EthMux V804 board are jumped 1 2 be os oA i a BH4 851 122 Cable gt L Pin of RJ45 connecter BNC F sockets BHC R Skin 7 ENC R Core i 4 BNC_TCore 5 BNC_T Skin Fig 3 2 2 2 75Q converting cable The cable No BH4 851 122 is for one RJ45 connecter to two BNC F sockets conversion cable the 4 jumpers of CNM26 CNM25 CNM24 and CNM20 in EthMux V804 board are jumped 2 3 It is optional for customs El service can set the actual service quanti
7. operation When power the device on PWR indicator will be lit indicator Ready will be on temporarily the other lights will blink alternately which indicate the system is starting now After a short time about 60 seconds light Ready begin to blink the other light will indicate the state of each ports respectively which indicate system is working well now If the Ready light doesn t blink as above which indicate the process runs abnormally please restart the system again Second group PWREAIL indicators PWRFAIL lights indicate power failure state red The number 1 and 2 denote PWRI and PWR 2 respectively The lights will be on if power is failed or it 1s not used they will be off if everything runs normally Third group Ethernet ports status indicator There are 4 RJ45 Ethernet ports in MX 120 two uplink Ethernet ports UPLINKI and UPLINK2 and two local Ethernet ports DATAI and DATA2 6 MX 120 User Manual V1 1 Www vaidsys ru SysteMs Each port has 3 status indicators from top to bottom they are speed indication full half duplex and link status indication detailed explanation is as below table Table 2 3 2 2 Ethernet indicator On 100M Off 10M rox a fone Sa on Link Link Act G link activity indicator Blink Data Off Inactive Forth group ET alarm indicators speed indicator This group lights indicate the 4 channels of EI alarm status and Ethernet transmission quality definition as
8. 01 01 00 36 39 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 2008 01 01 00 00 00 Line Test Configuration Line Management Vian Management onfiguration System 1 2 3 4 1 2 3 4 1 2 4 Change Pa Default Parameter Fig 5 1 3 alarm log 5 2 Line Test Loop back controls provide El line loop test function Click on EI Loop back option will bring the window as fig5 2 2 EI setting can be valid after submit but not saved that is Four Els will not loop back after restart Status Loopback Control Equipment Status ort y Tx gt Rx Status Rx gt Tx Control Tx gt Rx Control Line Status Alarm Log Line Test Fig 5 2 1 El Loop back Management 5 3 Configuration 5 3 1 Service configuration and parameters instruction This section includes E1 service management VLAN management Ethernet Management SNMP configuration Every section has many parameters setting As Fig5 3 1 16 MX 120 User Manual V1 1 www vaidsys ru SYSTEMS Configuration Information I ton quipment Status Line Type El Line Status Status Encapsulation Level 2 v Alam Log Use IP Encapsulation Yes v Uplink Bandwidth 30000 Kbps 0 100000 Line Test Line Loopback Configuration Information I Configuration Destination IP Timing Moc itter Butter From
9. 100 Base Tx 10 100 Base Tx Table 1 4 1 Timing mode schemes A side B side Equipment A Equipment B EthMux EthMux clock mode clock mode V804 V804 Timing mode Timing mode Note loop back loop back Equipment A amp B master master A clocks synchronous master master adaptive adaptive e a cee clocks plesiochronous loop back de MX 120 User Manual V1 1 www vaidsys ru SYSTEMS adaptive adaptive adaptive loopback slave master adaptive adaptive o oZ o slave slave Notallowed Note that setting both units to adaptive timing mode works well for all the conditions although the other option may work better 2 System architecture 2 1 Block diagram The internal functional structure of M X 1 20 is depicted below 1El lt uplink port 2E1 lt ET HU TDM Packet Ethernet local port 8El lt processing switch local port power line power 5V control module unit Fig 2 1 1 Functional diagram 2 2 Description The heart of MX 120 is the TDM Packet processing unit It truncates E1 data stream putting the data into Ethernet packet with or without IP headers The packets are passed to the Ethernet switch unit via MII interface and are sent out adaptive the uplink ports Ethernet data from two local data port are also sent out through the uplink ports but with lower priority tha
10. IP Address 192 168 1 1 MAC Address 00 09 45 80 00 00 Configuration Line Management Eth tus SNIP Configuration System Fig5 1 1 Status Menu The interface of line status will be displayed by clicking item Line Status on the left including alarm information LOS AIS loop back setting status shown as Fig5 1 2 and power status about dual power supply failure All the alarm information can be masked by Alarm Mask followed If the Alarm mask is enabled the corresponding alarm will not be shown in the alarm log panel indicators and SNMP Status Line Status Equipment Status Line Status 0 OS ATS Rx gt Tx Status Tx gt Rx Status Alarm Mask Alarm Log 1 Q c c s O 2 O Li a d 3 O 6 d Line Test 4 fe r 9 s C Configuration Power Status Line Management A T eee Power Num Power Fail Alarm Mask vlan Management Eth Port Status O M Pan e amp SNMP Configuration 2 a Fig 5 1 2 line status Click Alarm Log to enter the log menu Users can select current alarm or history alarm Following alarm information will be displayed LOS and AIS alarm of El power failure can not receive data packet service packet loss addressing failure of remote equipment down alarm of uplink and data port MX 120 User Manual V1 1 15 Www vaidsys ru Systems Alarm Log Configuration List Circle Current Alarm CO Current Alarm NES History Alarm _ 2008 01 01 00 00 00 2008 01 01 00 00 00 2008
11. OS lights are packet loss indicator On for Ethernet packet loss Blink for El Packet Loss Off for Normal 4 2 Lnk Act LED off Lnk Act LED off means the corresponding Ethernet link 1s not working Check the Ethernet cable connection and the status of the device on the other end of the cable 4 3 Ready LED does not blink After power on the Ready LED should start to blink If not try switch power off and on again If this error persists call for support 4 4 Cannot set up Elchannel 4 4 1 Same LAN domain When two MX 120 s are within the same Ethernet broadcast domain try following Check if the transmission network 1s on Check that the network will pass broadcast packets For a network that suppresses broadcast packets as some of the wireless LAN bridges do disable ARP MX 120 User Manual V1 1 13 www vaidsys ru SYSTEMS and manually setup local and remote MAC s Check that there is no MAC address conflict on the LAN Check that the transmission network has enough bandwidth more than 2 5Mbps duplex 4 4 2 Different LAN domain When two MX 120 s are in different Ethernet broadcast domains IP headers must be used and packets will be routed by a gateway router try following Check if the default gateway IP is defined correctly Check if the local and remote IP 1s set correctly Check for any conflicts in IP or MAC addresses Make sure the transmission network has enough bandwidth 4 5 Downstream repo
12. Remote Port Line Management 1 eaa E Adaptive 16 ms 1 Vlan T ae 2 192 168 1 3 Adaptive M 16 ms 2 Eth Port Status 3 192 168 1 3 Sante v 16 ms 3 SNMP Configuration 4 192 168 1 3 EE 16 E 4 Fig 5 3 1 El service Management Table 5 3 1 El service management parameters ae Explanations Parameters El service iat t El data size encapsulated in El N 1 5 optional corresponding to 256xNbyte E1 The bigger the Encapsulation packet is the more data each packet encapsulated the lower overhead it has Bandwidth efficiency will be raised and delay will be increased Default 2 IP encapsulation source and destination IP address should be set Bandwidth efficiency will be Encapsulation reduced default No do not use IP encapsulation high bandwidth efficiency Uplink Set full duplex bandwidth for uplink Ethernet port actual bandwidth should be higher than this value Default 30000bps Then data port bandwidth Uplink Bandwidth bandwidth Uplink bandwidth E1 occupied bandwidth Data limit local Ethernet ports full duplex bandwidth Then Uplink bandwidth data port bandwidth El occupied bandwidth Enable fo Enable this El channel Default enable Remote end IP address 4 E1 line IP addresses can be Destination IP set separately Default 192 168 1 3 Adaptive mode E1 timing from remote El stream Timing Mode Loop Loop back mode EIl timing comes from local El MX 120 User Manual V1 1 7 SYSTEMS
13. ate the Ethernet rate is 0 For example The transmission line can provide 6M bi direction bandwidth If we use two EI channels the local uplink should be set smaller than 6M If not the actual rate may be higher than the transmission bandwidth El errors may occur In addition sometimes the Ethernet bandwidth is given by half duplex such as 10M half duplex Ethernet bandwidth is about 5M in full duplex 2 Bandwidth auto adaptation for E1 depends on the connection of E1 If there is no signal loss for El system will allocate bandwidth for it When E1 port is free bandwidth will be released which can be used for local Ethernet access 3 The MAC address of MX 120 is fixed in the device ARP is supported and the remote end MAC address can be got through auto negotiation So it is unnecessary to set the MAC address for the remote end but IP address 1s needed En NOTE Each device should have only one MAC address in the multicast area 4 in order to improve the El data transmission service quality according to Ethernet provided transmission support IEEE 802 1Q and 802 lpor not HOFL EthMuxV804 can set whether to add VLAN tag with priority in the encapsulate process According to 802 1Q 802 1p standard to packing the encapsulation overhead is bigger more 4 bits is added in each Ethernet packet but it also can be transmit according to priority level But to the network which doesn t support 802 1p it is no sense to set VLAN but increase
14. ebuilding the El clock at the destination is called Adaptive Timing For applications where separate clock distribution network exists another MX 120 User Manual V1 1 3 Www vaidsys ru SysteMs timing mode Loop back Timing may be used for maximum clock quality The two timing modes of MX 120 are depicted in Fig 1 4 1 clock extract reconstruct oo a M Adaptive Timing Loop back Timing ET port Fig 1 4 1 El Timing modes Correct timing mode setting is important for smooth operations In most cases setting both units to adaptive timing mode is sufficient But sometimes setting one unit to loop timing mode may work better For example setting the MX 120 unit connected with the clock master such as local exchange to loop back mode and the other unit connected with the clock slave such as PBX or remote module to adaptive mode is probably better than setting both to adaptive modes One typical error in telecom applications is to connect two communication devices that are both clock slaves Neither will MX 120 support such operation no mater how the timing modes are set om Note that the Elchannel emulation takes several minutes to stabilize During that period clock drift may exceed the limit errors and slips may occur Various timing schemes are enlisted in Table 1 4 1 for applications depicted in Fig 1 4 2 packet net Equipment B Equipment A Fig 1 4 2 Timing mode scheme reference diagram 10
15. enance Support cascade concatenate for more than 4 E1 ports 1 3 Applications MX 120 is used to setup 1 4 transparent El channels over LAN or IP networks as depicted in Fig 1 3 1 BSC Be a oe DA i Uplink Uplink PCM m HOFL EthMux V804 HELE Mins V804 CL therne erne Router Ethernet Point to Point Application T G i A E Por Ethernet a A N Network ur lt lt Ve Point to Multipoint Application Fig 1 3 1 MX 120 application paradigm In the figure a pair of MX 120 create transparent E1 channels over the 2 MX 120 User Manual V1 1 Www vaidsys ru SysteMs packet network providing connections between the PBX and telephone exchange or other terminal devices At the same time computers talk to each other through the local Ethernet ports on the MX 120 s This configuration guarantees that the El channels get higher priority over computer data for maximum QoS The most widely used application of MX 120 is to set up point to point wireless El links using low cost wireless LAN bridges MX 120 can work with most LAN bridges on the market It may be necessary to adjust different parameters such as packet size and packet jitter absorption buffer size for best operation for different LAN bridges Be aware that wireless LAN bridges have a very limited bandwidth If Ethernet data is to be transferred at the same time its traffic must be restricted Otherwise it will affect
16. mounted on the rack the four 4 10mm high stands should be removed with a screw driver The mechanical dimensions of MX 120 are given in Fig 3 1 1 MX 120 User Manual V1 1 _9 www vaidsys ru SYSTEMS Be H aa r Fig 3 1 1 Mechanical dimensions 3 2 Electrical 3 2 1 Power connection The MX 120 consumes less than 10W of power According to power option 48V DC or 220V 110V AC or dual power supply select the right power supply for the equipment For the 48V type connect 48 supply to the power connector 48V port and ground to the other port The screws on the power connector must be tightly fastened For 220V equipment connect the device to the 220V outlet with standard power cord supplied with the equipment Note that there is a 1A fuse in the 220V socket which may be replaced when burned The 48V equipment uses PPTC resettable fuse no customer replacement is required It is recommended to turn off the power switch before connecting or disconnecting the power On the left corner of rear panel a screw is used for connecting the chassis to the protective ground Be sure to make this connection using a thick wire A WARNING The system must be securely connected to a good protective ground for safety All interconnected equipment must be grounded for maintaining signal integrity as well Ground potential may also damage the interface ports 2 WARNING To avoid electric shock the 220V outlet must have
17. n those packets containing E1 data In the reverse direction packets from the uplink ports are sorted at the switch unit All but El packets are passed to the local data ports The packets containing EI data are sent to the TDM Packet processing unit for reassembling the original data stream and recovering the E1 clock which is the key element of the device Very sophisticated algorithm is used to ensure that the reconstructed clock will meet the stringent requirement of TDM applications The most important parameters are jitter wander and signal delay The control unit interfaces with the user through console port so that various operational parameters can be modified MX 120 User Manual V1 1 _5 www vaidsys ru SYSTEMS 2 3 Front panel 2 3 1 Diagram MX 120 is shown in Fig 2 3 1 1 10100 Base TE MATH u G D O O ALARM 1 craReour M FN 1234 5 12 LinkAct a4 j 4 5 00 O File ii uplink uplink data idata ooog fm J 7 Ethemet status Ei alarm status dip switch Remate connection status Fig 2 3 1 1 Front panel of MX 120 2 3 2 LED s There are 28 LED s on the front panel divided into 5 groups First group PWR and Ready indicators The definition is as below table Table 2 3 2 1 PWR and Ready indicators PWR G ower indicator On Norma P Off Power Off Failure Ready operation status On or off System abnormal or system initialization Blink Normal
18. oot system Fig 5 4 3 default parameters recovery 1 Confirm whether to recover default or not Results Deffault Parameter Recovery Success Please Click Reboot to have it Valid Fig 5 4 4 default parameters recovery 2 5 4 4 Set system time Set Time SetTime to Device Fig 5 4 5 set system time Click get localtime to obtain current time from PC Then click Set time to device to confirm this time The time in Alarm Log will be changed according to current time Note the time should be set again after restart 5 4 5 Upgrade online MX 120 User Manual V1 1 23 www vaidsys ru systems sv v926a bin Software 347166 sv 925b bin Software 347192 ethrnu v8 pot Hardware 458617 Upgrade Firmware select a bin or pot file for upgrade Update Sofware Browse Update Software Upgrade rade Update Hardware Fig 5 4 6 Set system time The equipment can save two different versions of software and hardware In above picture column Name indicates program titles the letter A under Active means the corresponding program is active And there are two kinds of program type hardware and software Length shows their sizes Click the button start behind to run the programs Select Update Software or Update Hardware as above picture to upgrade the different software and then click Browse to choose the update program file click Upgrade the upgrade work will be performed Promp
19. pins the Prompt Alarm and the Deferred Alarm as shown in Fig 2 4 2 1 SYS ALARM Deferred Alarm Prompt Alarm Fig 2 4 2 1 System alarm port The alarm conditions for each alarm output are set by the user The output ports float when no alarm is present and connect to ground when alarm activates 2 4 2 El Port There are 4 El ports on the rear panel The El ports impendence are E1 120Q for twisted pair cables or 75Q for coax The E1 120Q RJ45 sockets are default for ports A 8 Fig 2 4 3 1 RJ45 connector pin sequence Table 2 4 3 1 RJ45 120Q Elsignal definition 8 MX 120 User Manual V1 1 www vaidsys ru 3 pot 2 fF 3 1 4 ox y enal E1 IN 2 4 3 Ethernet ports There are four RJ45 Ethernet ports on the rear panel 2 for uplink connection to the transmission packet network 2 local data ports for local computers to access the uplink network Table 2 4 4 1 RJ45 socket definition w Note 10 100Base Tx interface has HP auto MDIX function and it can check the transmission and receiving sequence and make configuration So both MDI and MDI X interfaces are supported and both cross line and direct line can be selected 2 4 4 Power The MX 120 power supply adopts module design Three kinds of power options are available AC DC AC AC DC DC It should be specified at the time of purchase 3 WInstallation 3 1 Mechanical MX 120 can be placed at the table top or mounted on a 19 rack If it is to be
20. pported And Web manager supported through anyone of two user data ports MX 120 User Manual V1 1 25 www vaidsys ru 6 4 Power AC 100V 240V 50HZ fuse 1A DC 38V 62V optional Power Consumption lt lOW 6 5 Operating condition Temperature 0 50 C Humidity lt 90 non condensing 6 6 Dimensions Width x Height x Depth 440 x 44 x 231 mm 6 7 Weight lt 2 5 kg 26 MX 120 User Manual Systems V1 1
21. rting slips Check if the downstream equipment has correct clock mode At least one of them must be clock master Set the EthMux on master side to loop back timing If the downstream equipment on both sides is not synchronized slips are not avoidable At the transition time after power on or reapplying the Elsignal slips and errors are acceptable Such transition may take several minutes 5 LL Web Manager Both Web Server and SNMP management are supported through anyone of two user data ports of MX 120 The management has four sections Status Line Test Configuration and System User name and password are required to enter the sections of Line Test Configuration and system Both the default user name and password are root Customers can modify the user name and password in the System section Note that the modifications of system will be valid after submit and reboot while the modifications of Line Test E1 loop back setting and Configuration can be valid only after submit 5 1 Show current status menu After input the IP address status information of MX 120 will be displayed such as hardware version software version IP address subnet mask gateway address and MAC address Details are shown in fig 5 1 1 de MX 120 User Manual V1 1 www vaidsys ru systems Basic Information Alarm Log Hardware Version 01 01 08 Software Version 00 09 25b f IP Address 192 168 1 2 ee Subnet Mask 255 255 255 0 SHES EEE Gateway
22. t information will pop up to show the upgrade is successful or not when finished After the equipment upgrade and restart normally enter the Upgrade Firmware menu again perform reboot the equipment will run the update software automatically the user also can click item Start followed to choose the start program 5 4 6 Save parameter Click reboot restart the equipment the default value will be valid Save parameters This operation will Save current parameters If the settings are not saved the device will keep the last state when restarted Fig 5 4 5 saves parameters 290A MX 120 User Manual V1 1 SYSTEMS www vaidsys ru 5 4 7 Reboot system Reboot Equipment This operation will reboot system All settings will be applied Fig5 4 6 Reboot equipment 6 LLISpecification 6 1 Capacity It supports four El ports two 10 100Base Tx uplink Ethernet ports and two 10 100Base Tx local data Ethernet ports 6 2 El interface Comply with ITU T G 703 recommendation Four El Ports Supported E1 port impedance E1 120Q for twisted pair cables or 75Q for coax The RJ45 E1 120Q are default for ports End to end delay minimum delay setting lt 10ms Output frequency offset adaptive timing stabilized lt 5 ppm Output jitter adaptive timing lt 0 1UI 6 3 10 100Base Tx port Comply with IEEE 802 3 10M 100M Adaptive Half Full Duplex Adaptive Support 802 1Q MAC Uplink ports 1 1 backup supported Two user data ports su
23. the E1 packets Since the LAN bridges usually don t have adequate QoS mechanism to guarantee the El priority it is strongly recommended that the data traffic be routed through the MX 1 20 local data port as depicted in Fig 1 3 2 Switch LAN Bridge e LAN Bridge Uplink EthMux gt EthMux Uplink local data port local data port Switch Recommended Not recommended Fig 1 3 2 preferred connections for LAN traffic WARNING When connecting to a wireless LAN bridge the uplink Ethernet cable often connects to the outdoor unit posing danger to lightning strikes that can seriously damage the equipment To protect the equipment as well as people surge protection devices with good earth connection is strongly recommended Poor earth connection may also hinder the operation of the Ethernet port causing severe packet losses 1 4 Timing modes To emulate a clear El channel over a packet network the MX 120 not only conveys data stream content correctly from the source to the destination but also passes timing Packet networks do not provide such built in timing transparency mechanism as TDM networks do MX 120 uses its proprietary algorithm to reconstruct the EI clock at the destination The recovered clock is of very high quality with low jitter and wander Typical frequency offset is within Sppm and jitter 1s below 0 1UI It can be adopted in most applications This timing mode of r
24. ting special equipment that packets voice or video signals such as VoIP techniques However to take advantage of the data network it is neither cost effective nor necessary to hastily replace all the TDM based equipment with new packet based equipment The MX 120 can be used to emulate transparent E1 channels over an Ethernet with adequate QoS so that most of the existing Elbased applications can be readily setup over Ethernet LANs and WANs One particular suited application is to build El links with low cost wireless LAN bridges replacing much more costly microwave radios 1 2 Features User friendly Web server supported for easy setup and maintenance Support SNMP V1 and V2 network management Point to point and point to multipoint supported Uplink ports 1 1 backup supported MX 120 User Manual V1 1 www vaidsys ru SYSTEMS Four El Ports supported Stable EI clock recovery low jitter and wander Low processing delay for El channels high bandwidth usage efficiency Resist to packet loss with PCM frame synchronization protection User definable encapsulation packet size for different application Support Ethernet encapsulation and UDP IP protocol encapsulation Support VLAN settings for E1 service and in band VLAN management Enough jitter buffer to resist packet delay variation PDV Local Ethernet port throughput limiting assuring E1 QoS Local and remote E1 LOS and AIS and packet loss indication for trouble shooting and maint
25. ty by NMS set the exact E1 channels received by local equipment from remote equipment realizing E1 service one point to multi point unidirectional transmission function By NMS Elports provide local loop back and remote loop back 4 E1 ports loop MX 120 User Manual V1 1 1 www vaidsys ru back can be set independently and by the dip RA on front panel E1 indicators can be controlled to indicate local or remote ports LOS and AIS status The local and remote loop back definition 1s shown as Fig 3 2 2 3 Fl T1 Ethmux Ethmux a j Ethernet i q Sah al r LA F kr 4 L LM Rx Tx Fig 3 2 2 3 E1 loop back Rx Tx can test El connection cable and Tx Rx is used to test the whole circuit including MX 120 in the two ends and the link between them 3 2 3 Ethernet connection Connect the uplink Ethernet port to the Ethernet transport network such as the wireless LAN bridge and connect the local data port to computers or an Ethernet switch for local data applications The signal definition of the two local Ethernet ports is given in Table 3 2 3 1 Table 3 2 3 1 Ethernet signal definition Pin 1 2 3 4 5 6 7 8 Signal RxD RxD TxD TxD Note The ports confirm to HP auto MDIX spec It will automatically adapt to parallel or crossed cables The signal definition of the uplink Ethernet ports is given in Table 3 2 3 2 Table 3 2 3 2 Ethernet signal definition pi 2
26. unnecessary bandwidth so here should set VLAN to NO 5 4 Network configuration The system configuration includes network configuration change password default parameters settings save parameters and reboot the equipment The interfaces are shown as below MX 120 User Manual V1 1 21 www vaidsys ru SYSTEMS 5 4 1 Network Management Network Configuration Attribute IP Address 192 166 1 4 Subrmask 255 255 255 0 Gateway IP Address 192 165 1 1 Fig 5 4 1 network configuration system Table 5 4 1system network management parameters default 192 168 1 2 It is used to judge the resource and destination IP is in one subnet or not please and the resource and destination IP address by bit they are in one subnet Sub mark if the result is same otherwise they are Network in different subnet should use gateway Management router default 255 255 255 0 If resource and destination is not in one subnet gateway IP address should be set and gateway address should be in the same subnet with resource equipment ARP is used to get address Default 192 168 1 1 Gateway IP Address 5 4 2 Change password Change Password Cunentpassword Fig 5 4 2 change the password The change will be valid after confirm the submitting ie MX 120 User Manual V1 1 Www vaidsys ru systems 5 4 3 Default parameter Detault parameter recovery This operation will recovery detault parameter Tt will be appled after you reb
27. www vaidsys ru SYSTEMS I LIGeneral 1 1 Overview Thank you for selecting the MX 120 product The product can be used to provide EI communication channels over Ethernet or IP networks The MX 120 has many optional parameters which can be modified by the user to suite different application requirements Please read this manual carefully before installing the product It is well known that the El signal comes from PCM technology which is TDM in nature It transmits information in a constant bit rate of El 2048kbit s TDM technology occupies fixed transmission bandwidth with QoS features suitable for real time applications such as voice and video The QoS features include short and stable transmission delay low jitter and wander etc On the other hand Ethernet is based on statistical multiplexing transmitting and exchanging information in packets It does not take up a fixed transmission bandwidth which is good for achieving higher bandwidth utilization But Ethernet technology does not provide adequate QoS for real time applications Until recently voice and data were and still are to a large extent transported over two separate networks But the requirement for both types of information to be carried over a unified network is growing rapid Packets over SONET SDH techniques to integrate date into the TDM network have been around for many years But for voice over packet based data networks most of the efforts are spent on crea
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