User manual
Contents
1. USER MANUAL G 703 FastEthernet Interface Converter TAHOE 284 TAHOE FREEDOM OF COMMUNICATION TABLE OF CONTENTS Te Introduction cia 1 2 Interfaces uuu 2 3 Configuration and 4 3 1 Configuration using the LCD and keyboard aaa 4 3 2 Configuration using the serial console a 8 4 Technical data 9 5 Declaration of Conformity 1 10 EO Tahoe 284 manageable 6 703 FastEthernet converter User Manual http www tahoe group com Firmware version 1 0 2004 Tahoe All rights reserved Other trademarks of other companies are used only for explanation and to the owner s benefit without intent to infringe Tahoe assumes no responsibility for any errors or omissions that may appear in this document Tahoe makes no commitment to update the information contained here and may make changes at any time without notice 1 Introduction Tahoe 284 converter allows connecting of two LANs through an El line terminated with balanced G 703 interfaces Converters work as transparent bridges that is both interconnected networks appear as a single LAN as if both were plugged into the same Ethernet switch Converter automatically learns which Ethernet addresses are heard on one and which on the other side As a result local traffic is not sent through the WAN link converter d2. D and the serial console may be changed 3 1 11 Savingsettingsto EEPROM Every change to the configuration will be lost after reboot or power off unless the settings are written to the EEPROM After reaching this option just press Enter to save them 3 1 12 Converter reboot After pressing Enter the converter is rebooted If some settings were not saved to the EEPROM they will be lost 3 2 Configuration using the serial console After connecting the converter to a PC running a VT 100 terminal emulation software and switching the converter on a menu will appear main menu G 703 port status Ethernet port status 2048 kb s 0 703 port carrier present CRC4 checksum on Ethernet 6 703 line coding Temperature 25 5 6 0 703 port range 58 Ethernet port setting MAG aging g Save settings to EEPROM Uptime Dd 88 01 53 Modem reboot Version 1 0 Refresh screen 08 Jan B4 12 83 86 time elapsed firmware version since power on and compilation date Up and down arrows may be used to navigate through the menu Either Enter or right arrow should be pressed to select an option To confirm a changed parameter press Enter To cancel a parameter change press left arrow All options are identical to the LCD options described in 3 1 The only addition is the Refresh screen function When a working converter is connected to the PC s serial port the screen contents may be incomplete selectin
3. D data received from the PC TXD data sent by the modem to the PC DTR active when the PC is switched on GND signal ground DSR active when the modem is switched on RTS used by the PC to inform that is has data to send CTS used by the modem to permit data transmission RI ring indicator signal used in telephone modems _ 2 vo Q N e 2 3 G 703 The G 703 interface is equipped with a 8 pin RJ 45 connector Although the G 703 standard does not specify the pinout one used in Tahoe devices is most widely used and a straight patch cord may be used to connect a converter to an external device Anyway the pinout should be carefully checked before connecting 1 Rx 2 Rx 3 4 Tx 5 Tx 6 7 8 The RX pin of the converter should be connected to the TX of the other device the RX pin to the TX pin TX to RX and TX to RX 3 Configuration and management The converter may be managed in two different ways either using a built in LCD and keyboard or through a serial console The use of LCD and keyboard is the easiest way to configure the converter there s no need to connect it to another device On the other hand the serial console may be used for remote management when connected for example to a port server or a remotely accessible PC 3 1 Configuration using the LCD and keyboard The four button ke
4. g this option or pressing Ctrl L will refresh the screen 4 Technical data processor ARM memory 8MB SDRAM G 703 interface framed according to G 704 or unframed balanced 1200 RJ 45 connector throughput 64 1984 kbps or 2048 kbps line coding AMI HDB3 signaling FAS CCS CRC4 receiver sensitivity 12 dB 43 dB range 50m 2000 m WAN protocol HDLC Ethernet interface 10 100Base T RJ 45 connector serial console RS 232 DB9 M connector dimensions 200 mm width x 45 mm height x 130 mm length power supply 15V 400 mA external power supply included environmental conditions storage temperature 20 C to 65 C humidity 5to 95 operation temperature 0 C to 50 C humidity 85 5 Declaration of Conformity TAHOE Piotr Kaczmarzyk ul Uniwersytecka 1 50 951 Wroclaw Poland We declare that the product Tahoe 284 complies with the regulations of the following European Directives o 73 23 EEC low voltage safety requirements o 89 336 EEC EMC requirements o 99 5 EEC radio telecommunication terminal equipment requirements The compliance of Tahoe 284 with the requirements of the above mentioned directives is ensured by complete application of the following harmonized European Standards O EN 60950 2000 o EN 55022 1998 o EN 61000 6 1 2002 O EN 61000 6 3 2002 Signed Piotr Kaczmarzyk Position Director Signature CO A a gt Date 2 Feb 2004 Place Wroclaw Pola
5. iscovers packets destined for the other LAN and only those are directed to the G 703 interface The G 703 interface may work in both framed and unframed mode In the first case only selected timeslots may be used for data transmission The converter may be managed using a built in LCD and keyboard or through a serial console 2 Interfaces Following connectors are found on the rear of the converter serial power power Ethernet console G 703 connector switch 2220 8 Le 2 1 Ethernet The FastEthernet interface is used to connect the modem to the Local Area Network It may work at speeds of 10 Mbps 10Base T or 100 Mbps 100Base T in either full duplex or half duplex mode The mode of transmission may be selected automatically or manually Modem should be connected to a Ethernet switch or a hub using a straight patch cord or to a PC a router or an uplink port in a switch using a crossed over one After connecting a LED named LAN Link should be lit 2 2 Serial console The RS 232 serial console is used for modem management It has a DB9 M connector and works as a DTE e a null modem cable should be used to connect it to a PC Three lines bolded are sufficient Terminal settings are 9600 bps 8 data bits 1 stop bit no parity no handshaking Pin Name Description DCD carrier detect transmission readiness signaling RX
6. nd 2004 Tahoe All rights reserved Other trademarks of other companies are used only for explanation and to the owner s benefit without intent to infringe Tahoe assumes no responsibility for any errors or omissions that may appear in this document Tahoe makes no commitment to update the information TAHOE Uniwersytecka 1 50951 Wroctaw Poland phone 48 50 100 7362 fax 48 71 344 2642 http www tahoe group com
7. rsensitivityandrange The G 703 port s receiver sensitivity thus port range may be changed either 12dB 50m or 43 dB 2000m 3 1 6 Ethernet portsettings By default the Ethernet port automatically selects the working parameters the throughput and full or half duplex mode Anyway these parameters may be set manually after selecting this option 3 1 7 MACtableentry expire time 3 1 7 The converter automatically learns which MAC hardware addresses are heard on each side of the link After a selected time 30s or 300s entries are removed from the table 3 1 8 802 3 control The flow control is user to prevent overloading a network consisting of sections working with different speeds When a certain eiii part of a network is unable to accept incoming traffic the converter may signal the condition to the remaining stations These stations will slow down the transmission rate preventing the loss of packets and the need for numerous retransmissions 3 1 9 Testloopbacks The test loopback are useful to diagnose the network problems Two kinds of loopback are available o towards Ethernet packets received from the Ethernet port are sent back to it O towards G 703 port packets received from the G 703 port are sent back to it 3 1 10 Languageselection After pressing Enter the language used on the LC
8. to EEPROM O converter reboot The Escape key may be pressed anytime to return to the main screen Pressing Enter selects the option displayed HERO 3 1 1 Throughputsetting After pressing Enterthe throughput ofthe G 703 port may be set using up down buttons It may be selected from a 64 2048 kbps range with 64 kbps step Setting the throughput to 2048 kbps enables the unframed mode Lower values enable the framed mode where only selected timeslots are used for the transmission The first timeslot DS0 is used for synchronization and following ones are used depending on the throughput set e g when it is set to 64 kbps the first synchronization and second data timeslots are used When set to 512 kbps first synchronization and second to ninth data are used 3 1 2 3 1 2 Timeslots selection If a specific timeslot combination is necessary it may be selected using this option After pressing Enter two lines of symbols would appear each symbol describes one timeslot S timeslot used for synchronization in framed mode m timeslot used for data transmission free timeslot NETEM 3 1 3 checksum After pressing Enter the CRC4 transmission and checking may be either enabled or disabled mj 3 1 4 G 703 coding The G 703 port may use one of two available codings HDB3 usedin most cases and AMI 3 1 5 G 703receive
9. yboard and LCD can be found on the front panel of the converter After switching the power on following information will be displayed The device type transmission speed G 703 link status and inside temperature are shown The throughput may be set to 2048 kbps in unframed mode and selected from 64 1984 kbps range in framed mode The G 703 link status is described using two letters in the upper right corner of the LCD In case of unframed mode letters UC may appear Letter U signals the unframed mode and C means that the carrier signal was detected In the case of unframed mode letters SC may appear there Letter S means that the converter is synchronized to the E1 stream Letter again signals that the carrier was detected If only is displayed then the G 703 signal is present butthe converter is unable to synchronizeto it Perhapsthe signal detected is an unframed signal On the right side of the LCD four buttons are available up down Escape and Enter By pressing up and down you can browse the menu and select one of the options O throughput setting O timeslots selection o G 703 line coding and receiver sensitivity selection o G 703 receiver sensitivity selection O Ethernet port mode selection autonegotiation or manual O enabling and disabling 802 3xflow control CRC4 and loopbacks o language selection in O saving settings
Download Pdf Manuals
Related Search