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Interface Pinouts

Orbitor 6000 Installation & Applications Guide —

E.7

RS232 Null-Modem Cable Configuration

Figure E—7 RS232 Null-Modem Cable

The connecting cable must be a shielded cable.

This cable is needed when it is necessary to connect two units back-to-back and
a set of modems is not available. Note that this cable specifies DB25
connectors on each end to allow direct connection to the link interface
connector on each unit.

The link speed must be defined for each of the two

units.

Summary of Contents for Orbitor 6000

Page 2: ...iption quality productiveness or any other matter Without limiting the foregoing in no event shall Develcon be liable for the loss of use or profit or other collateral special or consequential damages Prior to returning any unit for warranty or non warranty service the Buyer is required to obtain a Material Return Authorization Number MRA from Develcon The cost of shipping the equipment from the B...

Page 3: ...turer further declares that the product conforms with the requirements of the Low Voltage Directive 73 23 EEC and with the requirements of the EMC Directive 89 336 EEC for radiated emissions at the Class A level This product is not intended for residential applications ISDN Type Approval Labels Labels for National ISDN Type Approvals can be found on the inside surface of the backpanel of the ISDN ...

Page 4: ... the configuration may be quickly modified to be the same as the existing unit Octet Locations on Ethernet Frames provides a graphical representation of the various common Ethernet frames that the Orbitor 6000 will bridge or route When defining a pattern filter these frame displays indicate the offset values to use in order to define the pattern filter correctly Servicing Information provides info...

Page 5: ... as an Ethernet Bridge 2 4 Configure as an Ethernet IP Router 2 6 Define an IP Default Gateway 2 8 Define an IP Static Route 2 9 Define an IP Subnet Mask 2 10 Define a Variable Length IP Subnet Mask 2 12 Define a Variable Length IP Subnet Mask While Using Static IP Routes 2 14 Configure as an Ethernet IPX Router 2 16 Novell Servers in Both Locations 2 16 Novell Servers in One Location Only 2 18 Co...

Page 6: ...ts D 1 Main Board Strap Settings D 1 Changing the Batteries D 2 Changing Link Interfaces D 3 To Clear a Lost Password D 3 Installing A Wan Port Expansion Board D 4 Changing the Link Integrity on the 10BaseT LAN Interface D 5 E INTERFACE PINOUTS E 1 Pinout Information E 1 Link Clocking Information E 1 Console Pinouts E 2 V 24 RS232C Link Pinouts E 3 V 11 X 21 Link Pinouts E 4 RS442 RS530 Link Pinou...

Page 7: ...on of the Orbitor 6000 Ethernet Bridge Router Unpack the Orbitor Ethernet Bridge Router Rough handling during shipment can damage electronic equipment As you unpack the bridge router carefully check for signs of damage If damage is suspected contact the shipper Save the box and all packing material to protect the bridge router should it ever need to be moved or returned for service Check the packi...

Page 8: ...or and the Power LED Figure 1 1 Front View of the Orbitor Ethernet Bridge Router Identify the Connectors Each unit is configured with a standard 10BaseT LAN connector on the front of the unit and either a 10Base5 and 10Base2 LAN module Refer to Appendix D Servicing Information for information on replacing modules Figure 1 2 Rear View of the Orbitor Ethernet Bridge Router Figure 1 3 Rear View of th...

Page 9: ...g for each link will be provided by the DCE device connected to each link The V 35 link modules require interface converters that convert from a DB25 connector to a male 34 pin V 35 connector used for the V 35 interface Be sure to secure the cable connector s to the bridge router and the communications equipment with the connector screws to prevent accidental disconnection The ISDN ST interface mo...

Page 10: ...t119 tvi925 tvi950 vt52 vt100 wyse 50 wyse vp teletype Enter terminal type Select the terminal type being used if listed and enter its name in lower case at the prompt or choose the terminal type teletype if your terminal is not listed This terminal type operates in scroll mode and may be used successfully until a custom terminal definition is created Login to Bridge Router and Enter the Required ...

Page 11: ...ectory Numbers The configuration options required for proper initial operation are described in Section 2 Typical Applications and How to Configure Them Each type of operational software requires a different set of parameters to be configured Refer to Section 2 for details on configuring the Orbitor 6000 in different operational states Also refer to the appropriate Menu Reference Manual file for y...

Page 12: ...ies POWER Off Bridge Router is powered down Green LAN is connected and forwarding Red Bridge Router is NOT connected to the LAN or LAN Interface Type is configured incorrectly Yellow LAN NOT forwarding i e Listening Learning or Blocking Yellow flashing Bridge Router is in BOOT mode LAN Off LINK module is not present or module is Disabled Green LINK is up Red LINK is down failed Yellow LINK is conf...

Page 13: ...figure each of the components separately Note The configuration options described within this section are only for initial set up and configuration purposes For more complete information on all of the configuration parameters available please refer to the appropriate Menu Reference Manual file for your operating software on the accompanying disks for example ISDN commands are in one file called IS...

Page 14: ...ply press the equals key When choosing menu options that will toggle between values simply pressing the number associated with that option will cause the options value to change Each successive selection of the option will cause the options value to change Some menu options require input from the operator When selecting an option that requires a value the menu system will display the range of valu...

Page 15: ...xisting networks have been already set up Bridging should be used when the network consists of non routable protocols or routable protocols using the same network numbers Some protocols can only be bridged some of the more well known are NetBEUI used by Microsoft Windows 3 11 Windows 95 and Windows NT and LAT used by Digital Equipment Corp If your IPX or IP network address is the same at both loca...

Page 16: ...using what is called the Spanning Tree Protocol STP STP is used to prevent loops in a network which cause LAN traffic to be re broadcast again and again causing network congestion The Orbitor 6000 is pre configured to operate as an Ethernet bridge compatible with the IEEE 802 1d Spanning Tree Protocol definitions This means that without configuration modifications the Orbitor 6000 will bridge Ethe...

Page 17: ... address allows network management stations to use SNMP to configure and monitor the Orbitor remotely The IP address also allows telnet stations to connect to the Orbitor and view the built in menu system without having to physically connect to the device 1 IP Address Location Main Configuration Internet Set up IP Address The IP address consists of 4 octets and is represented by 4 fields separated...

Page 18: ...g tables Once the destination IP network is found in the routing tables the IP router sends the IP frame to the remote partner Orbitor that is connected to the appropriate remote IP network If no explicit route entry is found in the routing tables the IP frame is sent to the Default Gateway To configure the Orbitor 6000 to be an IP router the following parameters must be defined in the built in me...

Page 19: ...P Forwarding The IP Forwarding function enables or disables the forwarding of IP traffic when IP routing is enabled When IP forwarding is disabled all IP traffic across the WAN links will be blocked While IP forwarding is disabled the Orbitor will still operate as an IP RIP router and maintain its routing tables The default gateway parameter only needs to be defined when there is another IP router...

Page 20: ...his would be a router that is used to connect to the Internet All of the Orbitors on the local LAN would have the Internet access router as the default gateway The Orbitors would route information within the internal network and any IP frames that are destined for the Internet would be routed to the default gateway 1 Default Gateway Location Main Configuration Internet Set up Default Gateway The I...

Page 21: ...n you first enter the menu and then the IP address of the next hop route and the cost may be defined Once all of the static IP routes are defined they may be viewed with the Show Static Routes command from the IP Routes menu Configuration On ISDN Orbitors when the IP routing protocol is set to none the subnet Note mask size must also be defined when creating a static route entry The subnet mask is...

Page 22: ...sisting of a smaller number of host addresses in each location This allows each of the sites to be a smaller IP network and to be routed together to allow inter network communication The Orbitor 6000 allows standard subnet sizes from 2 to 22 bits of the host field The subnet size determines how many bits of the host field of the original IP network address will be used for the creation of subnets ...

Page 23: ...of contiguous bit locations immediately following the network portion of the IP address These reserved bit locations are then used as part of the network portion of the IP address The subnet size must be the same as the subnet size defined on the other Orbitor routers connected on the same WAN connection when the IP routing protocol is set to RIP The subnet mask created will vary depending upon wh...

Page 24: ...tion they might want to have an internal router to route between the two or more IP networks An IP router may be desirable between the two IP networks to minimize traffic on the router connection The original IP network address may be sub netted into two or more smaller IP networks consisting of a smaller number of host addresses in each location This allows each of the sites to be a smaller IP ne...

Page 25: ...contiguous bit locations immediately following the network portion of the IP address These reserved bit locations are then used as part of the network portion of the IP address The subnet size must be the same as the subnet size defined on the other Orbitor routers connected on the same WAN connection when the IP routing protocol is set to RIP The subnet mask created will vary depending upon which...

Page 26: ... router to route between the internal IP networks The original IP network address will be sub netted into three smaller IP networks consisting of a smaller number of host addresses in each location This allows each of the sites to be a smaller IP network and to be routed together to allow inter network communication The Orbitor 6000 allows variable length subnet sizes from 1 to 22 bits of the host...

Page 27: ...Router B will have two static routes defined one to the IP sub network on LAN 2 through router C and one to the IP sub network on LAN 3 through router C The static routes are defined in the IP Routes menu of the IP Routing Set up menu Both router C and D should have their Default Gateways defined as router B This will cause all non local IP traffic to be sent to router B Router B should have its D...

Page 28: ...ll need to be configured differently in the second configuration with Novell servers located on only one of the LAN segments Novell Servers in Both Locations An Ethernet IPX router is used to intelligently route Novell IPX LAN traffic to remotely connected LANs across the WAN Figure 2 5 IPX Routed Local Area Networks Servers on both sides IPX routers forward IPX frames based upon their IPX destina...

Page 29: ... segment are to be connected together with IPX routers you must ensure that the IPX network numbers on each of the Novell servers is unique If the IPX network numbers are the same the IPX routers will not operate Once the WAN connections have been established to the remote partner Orbitors the IPX router portion of the Orbitors will begin to build their routing tables according to the IPX frames t...

Page 30: ...e Orbitor connected to LAN 2 must be configured with IPX network number 1500 using the appropriate frame type The clients connected to LAN 2 must also be running with the same frame type as defined on the Orbitor After the Orbitors have established the WAN connection the IPX routing procedures will cause the names of the services located on LAN 1 to be stored in the services table on the Orbitor o...

Page 31: ... the Orbitor to operate as an IPX router with the newly defined IPX network numbers All Orbitor IPX routers connected to the same WAN must have IPX routing enabled for IPX routing to take place between the LANs When a number of Orbitor IPX routers are connected on the same WAN and one of the Orbitors has IPX routing disabled all of the Orbitor IPX routers will become bridges only for IPX frames 4 ...

Page 32: ...ther ISDN Orbitor the ISDN information must be defined The phone numbers must be defined for the ISDN interface and the ISDN switch type must be defined for the Orbitor Refer to the following diagram that shows two Orbitor 3000 units connected to an Orbitor 6000 unit with two ISDN B channels being configured on one of the Orbitor 3000s and one B channel on the other Figure 2 7 Basic ISDN Configura...

Page 33: ...ce the ISDN switch type and directory numbers have been configured the Orbitor must be reset for the new values to take effect and for the ISDN BRI interface to register with the central switch 1 Soft Reset Location Main Diagnostics Soft Reset Once the Orbitor has restarted it is ready to establish ISDN connections With the ISDN numbers and switch type defined an ISDN call may be placed from one O...

Page 34: ...Applications 2 22 Orbitor 6000 Installation Applications Guide ...

Page 35: ...rames IP routed frames and IPX routed frames For more information on filtering please refer to the Programmable Filtering section of the Orbitor 6000 reference manual file The PDF file is located on the accompanying diskette MAC Address Filtering MAC address filtering is provided by three built in functions The first function is Filter if Source the second is Filter if Destination The third functi...

Page 36: ...Ethernet Frames for more information on octet locations in data frames The pattern match value is defined as a HEX string that is used to match against the data frame If the HEX data at the appropriate offset location in the data frame matches the HEX string of the filter pattern there is a positive filter match The data frame will be filtered according to the filter operators being used in the fi...

Page 37: ...ilter patter If the packet information starting at the 14th octet equals 24 or 32 and the information at the 12th octet equals 80 the filter pattern will match Popular Filters Shown here are some of the more commonly used pattern filters Bridge Bridge pattern filters are applied to Ethernet frames that are bridged only When the Orbitor is operating as a router all routed frames will be unaffected ...

Page 38: ...will be checked against the defined IP router pattern filters IP routed frames are unaffected by the bridge pattern filters and the IPX router pattern filters NetBIOS over TCP NetBIOS over TCP NETBIOS Name Service 22 0089 NETBIOS Datagram Service 22 008A NETBIOS Session Service 22 008B Note Uses the TCP Destination Port location Other interesting TCP Ports Other interesting TCP Ports Decimal Hex U...

Page 39: ...enu trees is explained in the accompanying Orbitor 6000 menu reference files The PDF files are located on the accompanying diskettes Menu names are displayed in boxes The numbers on the left side of the boxes indicate the menu option from the parent menu that this menu corresponds to All menu options are listed with numbers indicating their actual position within the menu system Menu options conta...

Page 40: ...2 Show 3 Add 4 Remove 1 Terminal Set Up menu 2 Device Set Up menu 3 Remote Access menu 4 Load FLASH Set Up menu 5 TFTP Restore 6 Hardware Status 7 Dump 8 Restore Access Set Up 1 1 1 2 2 3 4 1 Password 2 Remote Password 3 Device Name 4 LAN Name 5 Show Time 6 Set Time 1 Telnet 2 Connect 3 Show Names 4 Add Name 5 Remove Name 1 Console ZMODEM 2 Network TFTP Terminal Set Up Device Set Up Remote Access ...

Page 41: ...ow Pattern 5 Add Pattern 6 Remove Pattern 7 Help 1 Show Alias 2 Add Alias 3 Remove Alias 4 Show Pattern 5 Add Pattern 6 Remove Pattern 7 Help 1 Show Alias 2 Add Alias 3 Remove Alias 4 Show Pattern 5 Add Pattern 6 Remove Pattern 7 Help Bridge Pattern Filter IP Router Pattern Filter IPX Router Pattern Filter MAC Address Filters Filter Set Up 1 MAC Address Filters 2 Bridge Pattern Filter 3 IP Router ...

Page 42: ...Number 7 SPID 2 IP Address Connect 3 Show IP Address Entries 4 Remove IP Address Entry 2 Manual Call 3 Force Disconnect 4 Show Remote Sites 5 Remove Remote Site 1 Connection Management 2 Ignore Bridge Traffic 3 Ignore IPX Type 20 4 Idle Timer 5 TCP Keepalive 6 IPX Watchdog Interval Link Set Up IP Address Connect Set Up Remote Site Set Up Connection Management Interface Set Up WAN Set Up 1 WAN Set ...

Page 43: ...ow Addresses 3 Add NMS Address 4 Add Trap Address 5 Remove NMS Address 6 Remove Trap Address 7 Help SNMP Set Up 1 Edit Community menu 2 Message Size 3 Show Communities 4 Remove Community Edit Community 2 Filter Operation 3 Broadcast Address 4 Show Bridging Table 5 Show Permanent Table 6 Clear Bridging Table 1 Edit MAC Address Filter 1 Status 2 Location 3 Filter If Source 4 Filter If Destination 5 ...

Page 44: ...Menu Trees A 6 Orbitor 6000 Installation Applications Guide ...

Page 45: ...on Dump and Load commands may also be used to store the configuration of an Orbitor This way if a replacement unit is required the saved configuration may be simply Loaded into the replacement unit and the configuration will be the same as the existing unit There are two sets of configuration pages included in this section Each set consists of two facing pages and corresponds to a version of opera...

Page 46: ... Aging Timer _______ 300 seconds Spanning Tree Menu STP State __ disabled __ enabled Device Priority _______ 1 Bridge Priority _______ 32768 Forwarding Delay _______ 15 seconds Message Age Timer _______ 20 seconds Hello Time _______ 2 seconds LAN Port Menu State __ disabled __ enabled Path Cost _______ 100 Priority _______ 128 decimal Internet Set Up Menu IP Address ____ ____ ____ ____ Subnet Size...

Page 47: ...____________________________________ ____________________________________________ IP Router Pattern Filter Menu Aliases ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ Patterns ____________________________________________ ____________________________________________ _...

Page 48: ...Name ______________ LAN Name ______________ Remote Access Menu Telnet __ disabled __ enabled ISDN Set Up Menu Switch Type ______________ ISDN Password ______________ Link Set up Menu Link Operation Directory Number 1 SPID Dial Prefix Phantom Power Detect 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Group Set up Menu Group Multilink Force 56K Hunt Group Number 1 2 3 4 5 Remote Site Table Index Device Name ISDN...

Page 49: ...enabled IP Routes Menu Static Routes Destination IP Address Subnet Size Next Hop IP Address Cost IPX Routing Set Up Menu IPX Routing __ disabled __ enabled IPX Forwarding __ disabled __ enabled MAC Address Filters Menu Filter Operation __ negative __ positive Broadcast Address __ filter __ forward MAC Address Filter Table MAC Address Source Destination Bridge Pattern Filter Menu Aliases __________...

Page 50: ...Configuration Pages B 6 Orbitor 6000 Installation Applications Guide ...

Page 51: ...frame representations Note the differences in the TCP IP and Novell frames when bridging and when routing When routing the TCP IP and Novell frames are examined after the Level 2 Ethernet portion of the frame has been stripped from the whole data frame This means that the offset numbers now start from 0 at the beginning of the routed frame and not the bridged frame Some of the common Ethernet type...

Page 52: ...04 Chaosnet 0805 X 25 Level 3 0806 ARP 0807 XNS Compatibility 6001 DEC MOP Dump Load 6002 DEC MOP Remote Console 6003 DEC DECNET Phase IV Route 6004 DEC LAT 6005 DEC Diagnostic Protocol 6006 DEC Customer Protocol 6007 DEC LAVC SCA 8035 Reverse ARP 803D DEC Ethernet Encryption 803F DEC LAN Traffic Monitor 809B Appletalk 80D5 IBM SNA Service on Ether 80F3 AppleTalk AARP Kinetics 8137 8138 Novell Inc...

Page 53: ...Octet Locations on Ethernet Frames Orbitor 6000 Installation Applications Guide C 3 Octet Locations on an IP Routed TCP IP Frame Octet Locations on an IPX Routed Novell Netware Frame ...

Page 54: ...Octet Locations on Ethernet Frames C 4 Orbitor 6000 Installation Applications Guide Octet Locations on a Bridged XNS Frame ...

Page 55: ... Boards Main Board Strap Settings Strap 1 2 Position 2 3 Position W1 Factory purposes only Factory purposes only W2 Factory purposes only Factory purposes only W3 Override password setting Allow password setting default W4 Remain in Console load mode Operational mode default W5 Battery backup enabled default Battery Backup Disabled W6 WAN expansion board installed WAN expansion board not installed...

Page 56: ...e Access Set Up Menu before removing the batteries DO NOT OPERATE the bridge router without both batteries as even in the discharged state they complete an important circuit Leave the discharged batteries in place until new batteries are obtained 1 Acquire two new 2430 Lithium batteries The new batteries should be Sanyo or Renata CR2430 or equivalent 2 Dump the configuration so it can be saved to ...

Page 57: ... router 3 Remove the Link module from the bridge router Be sure to grip the module only by the flange at the bottom of the metal panel 4 Install the new Link module and secure with the two screws 5 If you removed power from the bridge router in step 1 power up the bridge router 6 Enable the module from the WAN Set Up menu To Clear a Lost Password 1 Remove power from the bridge router 2 Open the fr...

Page 58: ...tional link modules as indicated previously 1 Remove power from the Orbitor 6 bridge router 2 Open the front panel and remove the main board 3 Attach the WAN port expansion board to the bottom of the main board The connector on the top of the expansion board mates with the connector on the bottom of the main board Main board connector which mates to the WAN expansion board Figure D 2 Bottom View o...

Page 59: ...he Orbitor 6 bridge router Changing the Link Integrity on the 10BaseT LAN Interface To disable the link integrity option for the 10BaseT LAN interface move the strap W1 to the main board under the battery board to the position shown below To re enable link integrity move the strap back to the original position 1 Remove power from the bridge router 2 Open the front and remove the main board 3 Remov...

Page 60: ...enable link integrity Link Integrity OFF Link Integrity ON Figure D 6 Link Integrity Strap for 10BaseT Connector 5 Re install the battery board on the main board by installing the screw removed previously 6 Install the main board back in the bridge router and close the front 7 Power up the bridge router ...

Page 61: ...t have a link speed defined Link Clocking Information All of the link interfaces on the Orbitor act as DTE devices this means that they may be directly connected to DCE devices modems etc with the DCE devices providing the clocking for the link The link speed is controlled by the DCE device Setting the link speed on the Orbitor will not result in a speed change on the link Some DCE devices allow t...

Page 62: ... 106 CB Clear to Send X 6 107 CC Data Set Ready X 7 102 AB Signal Ground NA 8 109 CF Received Line Signal Detector CD X 20 108 2 CD Data Terminal Ready X 22 125 CE Ring Indicator X Figure E 1 Console Pinouts The connecting cable must be a shielded cable When connecting the Orbitor console directly to a modem a null modem cable must be used because both the Orbitor console and the modem are DCE dev...

Page 63: ...B Signal Ground NA 8 109 CF Received Line Signal Detector CD X 9 10 11 12 13 14 15 114 DB Transmit Signal Element Timing DCE Source X 16 17 115 DD Receive Signal Element Timing DCE Source X 18 141 Local Loopback X 19 20 108 2 CD Data Terminal Ready X 21 22 125 CE Ring Indicator X 23 24 113 DA Transmit Signal Element Timing DTE Source X 25 Figure E 3 RS232 Link Pinouts The connecting cable must be ...

Page 64: ...l Ground NA 9 T B Transmitted Data B X 10 C B Control B X 11 R B Received Data B X 12 I B Indication B X 13 S B Signal Element Timing B X 14 15 Figure E 4 V 11 Link Pinouts The connecting cable must be a shielded cable Circuits which are paired contain an A and B reference should be connected to twisted pairs within the connecting cable NOTE For U K Approval The connecting cable should be manufact...

Page 65: ...Timing DCE Source X 10 CF B Received Line Signal Detector X 11 DA B Transmit Signal Element Timing DTE Source X 12 DB B Transmit Signal Element Timing DCE Source X 13 CB B Clear to Send X 14 BA B Transmitted Data X 15 DB A Transmit Signal Element Timing DCE Source X 16 BB B Received Data X 17 DD A Receive Signal Element Timing DCE Source X 18 LL Local Loopback X 19 CA B Request to Send X 20 CD A D...

Page 66: ...iver Signal Element Timing B X 17 18 U 113 Transmitter Signal Element Timing A DTE X 19 W 113 Transmitter Signal Element Timing B DTE X 20 H 108 2 Data Terminal Ready X 21 141 Local Loopback X 22 J 125 Calling Indicator X 23 Y 114 Transmitter Signal Element Timing A X 24 25 AA 114 Transmitter Signal Element Timing B X Figure E 6 V 35 Link Pin Outs The connecting cable must be a shielded cable Circ...

Page 67: ... connecting cable must be a shielded cable This cable is needed when it is necessary to connect two units back to back and a set of modems is not available Note that this cable specifies DB25 connectors on each end to allow direct connection to the link interface connector on each unit The link speed must be defined for each of the two units ...

Page 68: ...ed Data A Received Data A Transmitted Data B Received Data B Receiver Signal Element Timing A Receiver Signal Element Timing B Transmitter Signal Element Timing B Transmitter Signal Element Timing A Transmitter Signal Element Timing B Data Channel Received Line Signal Detector CD Data Terminal Ready Signal Ground Data Set Ready Request to Send Protective GND Figure E 8 V 35 Null Modem Cable The co...

Page 69: ...mitted Data A Received Data A Transmitted Data B Received Data B DCE Ready A DCE Ready B Clear To Send B Request To Send A Request To Send B Received Line Signal Detector A Received Line Signal Detector B DTE Ready A DTE Ready B Signal Ground Transmit Timing A DTE Source Transmit Timing B DTE Source Local Loopback Remote Loopback Receiver Timing A DCE Source Transmit Timing A DCE Source Transmit T...

Page 70: ... Transmit Signal Element Timing DTE Source A Data Set Ready B Transmit Signal Element Timing DTE Source B Request to Send A Signal Ground Request to Send B Shield Clear to Send A Clear to Send B DB25 MALE 2 20 14 23 3 17 16 9 8 15 10 12 6 24 22 11 4 7 19 1 5 13 DB37 MALE FEMALE 4 12 22 30 6 8 24 26 13 5 31 23 11 17 29 35 7 19 25 1 9 27 Figure E 10 RS530 to RS449 Conversion Cable The connecting cab...

Page 71: ... 2 21 ISDN Switch Type 2 20 ISDN ST Module 1 3 ISDN U Module 1 3 L LAN Connection 1 3 LAN Module 10Base2 1 2 10Base5 1 2 10BaseT 1 2 LED Interpretation 1 6 Link Clocking Information E 1 Link Integrity D 5 Link Interfaces Reference E 1 Link Pin Out Information E 1 M MAC Address Filtering 3 1 Managing the Orbitor 3000 2 1 2 2 Manual Conventions 2 2 Menu System 2 1 2 2 Module 1 2 N Negative Filtering...

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