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ET100A 

[ver2]

 

Synchronous WAN Ethernet Bridge 

10/100Base-TX Ethernet over 

V.35, X.21, RS-232/530/449 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for ET100A

Page 1: ...ET100A ver2 Synchronous WAN Ethernet Bridge 10 100Base TX Ethernet over V 35 X 21 RS 232 530 449 ...

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Page 3: ...enter 8F No 60 Zhouzi St Neihu Taipei 114 Taiwan ET100A Ethernet WAN Bridge User Manual Version 2 0 March 21 2014 Release This manual supports the following models ET100A Ethernet WAN Bridge manufactured after March 2014 All specifications subject to change without notice ...

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Page 5: ...ION 13 DIP SWITCH SETTING TABLES 16 WAN PORT PIN ASSIGNMENT 20 CABLE PIN ASSIGNMENTS 24 RS 530 CABLE 25 CONDUCTOR ROUND 1 TO 1 1M 24 V 35 CABLE MULTI CONDUCTOR ROUND 1M 25 RS 449 CABLES MULTI CONDUCTOR ROUND 1M 26 X 21 CABLES MULTI CONDUCTOR ROUND 1M 27 APPLICATION EXAMPLES 28 ...

Page 6: ...Table of Contents ii This page left blank intentionally ...

Page 7: ...rious SYNC data port interfaces convenient Features Supports raw HDLC Cisco HDLC and PPP encapsulation 10BASE T 100BASE TX Full Duplex or Half Duplex HP Auto MDI MDIX detects and corrects crossed cable Automatic address learning aging and deletion after 5 minutes Forwarding and filtering rate at wire speed with through put latency of 1 frame Auto padding of undersized packets to meet the minimum E...

Page 8: ...ates n x 64 56 Kbps up to 10Mbps Clock Source Internal or External General Power AC Adapter EUP 100 240VAC 12VDC 1A Unit DC9 12V 300mA Environment Temperature 0 50o C Humidity 90 non condensing Dimensions 135 L x 80 W x 25 H mm Weight 150g LED INDICATORS SYNC green ON WAN Protocol Up LINK green ON receiving CTS and DSR signal Rx green ON WAN receive data blinking Tx green ON WAN transmit data blin...

Page 9: ... 449 Serial Port Line Drivers Figure 1 ET100A Functional Block Diagram V 35 X 21 RS 232 SYNC HDLC CONTROLLER Full Duplex Half Duplex Ext clock Int clock FILTER ENGINE MAC Address Table Frame Buffer WAN SIDE DB25 Male DTE LAN SIDE RJ 45 ERROR Clock Source LINK Tx LED Rx LED SYNC ACT LINK IEEE802 3u I F ...

Page 10: ...ET100A LAN WAN Bridge Unit Detail 13 11 10 8 6 7 9 5 12 4 2 3 1 Figure 2 ET100A Unit Detail 10 ...

Page 11: ...t make sure physical link is up then make sure protocol settings match 3 LINK LED Green where ON indicates the presence of CTS DSR signal on WAN connection 4 RX LED Green on or flashing indicates receiving data on the WAN interface 5 TX LED Green on or flashing indicates transmitting data on the WAN interface 6 SW1 Configuration setting for the bridge Please refer to DIP SW setting table 7 SW2 Con...

Page 12: ...N connection 11 ERROR LED Red indicates an error condition as follows ON System Error Pulse 2 Configuration error Pulse 3 WAN receive has CRC errors 12 PWR LED Green on when external power adapter is plugged in and AC power is supplied to it 13 DC 9 12V This jack receives power from the external DC 12V AC power switching adapter The center pin is positive voltage ...

Page 13: ...eam interfaces such as that of synchronous modems or DSU CSUs One method to do this is to use HDLC an international standard set by the ISO a set of protocols for carrying data over a link with error and flow control Another method uses PPP and a third uses Cisco HDLC The ET100A utilizes both Ethernet Bridging and encapsulation to provide a connection between LANs over bit stream architectures The...

Page 14: ...ion of ET100A LAN WAN Bridge Many times the ET100A is commonly referred to as an Ethernet to V 35 Ethernet to X 21 or Ethernet to Datacom converter As a sales marketing term or non technical reference the term is OK However from a technical standpoint the term is a misnomer The Ethernet is not converted to V 35 it is run over the V 35 link Conversion also implies that the interface can work both w...

Page 15: ...ansmission across the LAN This requires more than just manipulation at the Data Link layer ISO Layer 2 it requires programming to include all seven layers including the Application layer Transmitting bit stream or TDM time division multiplexed data over Ethernet requires a device such as an IP Multiplexer Please refer to the Applications section at the end of this manual for additional application...

Page 16: ... SW1 STATE FUNCTION REMARK OFF CTS DSR 4 ON Active DCD always on Table 3 DCD Handshaking Setting DIP SW1 STATE FUNCTION REMARK OFF Enable 802 3x 5 ON Disable Table 4 LAN Flow Control Settings SW1 6 SW1 7 SW1 8 Function REMARK OFF X X Auto SW1 7 1 8 don t care ON OFF OFF 100 Full ON OFF ON 100 Half ON ON OFF 10 Full ON ON ON 10 Half Table 5 LAN Interface Setting SW2 1 SW2 2 TYPE OFF OFF V 35 ON OFF...

Page 17: ...FF 704K 616K 3456K 7552K ON ON OFF ON OFF 768K 672K 3584K 7680K OFF OFF ON ON OFF 832K 728K 3712K 7808K ON OFF ON ON OFF 896K 784K 3840K 7936K OFF ON ON ON OFF 960K 840K 3968K 8064K ON ON ON ON OFF 1024K 896K 4096K 8192K OFF OFF OFF OFF ON 1088K 952K 4224K 8320K ON OFF OFF OFF ON 1152K 1008K 4352K 8448K OFF ON OFF OFF ON 1216K 1064K 4480K 8576K ON ON OFF OFF ON 1280K 1120K 4608K 8704K OFF OFF ON O...

Page 18: ...n protocols When selecting HDLC the encapsulation is per ISO 13239 The cHDLC encapsulation is compatible with Cisco modified HDLC The PPP encapsulation follows RFC1661 and is also a very popular encapsulation protocol The protocol selection is controlled by the setting of DIP switches SW1 1 and SW1 2 Clock Selection The ET100A inherently acts as a DTE device A 1 1 cable is used to connect to a DCE...

Page 19: ...negotiated to Full Duplex When connecting to legacy equipment it may be necessary to force the speed and Duplex on the LAN port Care must be taken here to avoid a Duplex Mismatch condition when a forced port connects to an auto port Without negotiation an auto port will revert to Half Duplex per the IEEE802 3u standard A Duplex Mismatch condition could result in extremely poor network performance ...

Page 20: ...l connectors for V 35 MB34 X 21 DB15 and RS 449 DB37 a V 24 RS 232 INTERFACE PIN ASSIGNMENT PIN CIRCUIT FUNCTION DIRECTION EIA 1 FGND Protective GND AA 2 TD Transmit data OUT BA 3 RD Receive data IN BB 4 RTS Request to send OUT CA 5 CTS Clear to send IN CB 6 DSR Data set ready IN CC 7 GND Signal ground AB 8 DCD Carrier detect IN CF 15 TC Transmit clock IN DB 17 RC Receive clock IN DD 20 DTR Data t...

Page 21: ...d IN 106 6 DSR Data set ready IN 107 7 GND Signal ground 102 8 DCD Data carrier detect IN 109 9 RC B Receive clock B IN 115 11 XTC B DTE Xmit clock B OUT 113 12 TC B Xmit clock B IN 114 14 TD B Xmit data B OUT 103 15 TC A Xmit clock A IN 114 16 RD B Receive data B IN 104 17 RC A Receive clock A IN 115 20 DTR Data terminal ready OUT 108 24 XTC A DTE Xmit clock A OUT 113 Table 9 V 35 Interface Pin A...

Page 22: ...tect A IN 109 9 RT B Receive clock B IN 115 10 RR B Data carrier detect B IN 109 11 TT B DTE Xmit clock B OUT 113 12 ST B Xmit clock B IN 114 13 CS B Clear to send B IN 106 14 SD B Xmit data B OUT 103 15 ST A Xmit clock A IN 114 16 RD B Receive data B IN 104 17 RT A Receive clock A IN 115 19 RS B Request to send B OUT 105 20 TR A Data terminal ready A OUT 108 22 DM B Data set ready B IN 107 23 TR ...

Page 23: ...A Receive data A IN 104 4 C A Request to send A OUT 105 7 GND Signal ground 102 8 I A Data carrier detect A IN 109 9 S B Receive clock B IN 115 10 I B Data carrier detect B IN 109 14 T B Xmit data B OUT 103 16 R B Receive data B IN 104 17 S A Receive clock A IN 115 19 C B Request to send B OUT 105 Table 11 X 21 INTERFACE PIN ASSIGNMENT SW2 1 2 ON OFF ...

Page 24: ...2 applications as well Part 58 D2FD2M007 RS 530 Cable DB25 Female DB25 Male 1 Meter Part 58 D2FD2F010 RS 530 Cable DB25 Female DB25 Female 1 Meter DB25 Female DB25 Male Female PIN PIN 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 ...

Page 25: ...D2FM3M001 V 35 Cable DB25 Female MB34 Male 1 Meter Part 58 D2FM3F000 V 35 Cable DB25 Female MB34 Female 1 Meter DB25 Female MB34 Male Female PIN PIN 2 P 14 S 3 R 16 T 4 C 5 D 6 E 20 H 8 F 24 U 11 W 15 Y 12 AA 17 V 9 X 1 A 7 B 22 J NOTE TWISTED PAIRS P S R T U W Y AA V X ...

Page 26: ...RS 449 Cable DB25 Female DB37 Male 1M Part 58 D2FD3F000 RS 449 Cable DB25 Female DB37 Female 1M DB25 Female DB37 Male Female PIN PIN 1 1 7 19 the following are all twisted pairs 2 4 14 22 3 6 16 24 4 7 19 25 5 9 13 27 6 11 22 29 20 12 23 30 8 13 10 31 24 17 11 35 15 5 12 23 17 8 9 26 ...

Page 27: ...or round 1m Part 58 D1MD2F003 X 21 Cable DB25 Female DB15 Male 1M Part 58 D1FD2F001 X 21 Cable DB25 Female DB15 Female 1M DB25 Female DB15 Male Female PIN PIN 1 1 7 8 the following are all twisted pairs 2 2 14 9 3 4 16 11 4 3 19 10 8 5 10 12 17 6 9 13 ...

Page 28: ...match the CSU DSU unit The CSU DSU may be set unframed or may be set to use a fraction n x 56 or n x 64 of the E1 or T1 line The CSU DSU timing is received from the carrier provider s network so the ET100A s timings for Tx and Rx clocks should be set to external In this configuration the rate DIP settings of the ET100A are ignored ET100A V35 ET100A V35 Figure 5 Bridging over E1 services 28 ...

Page 29: ...on the speed of the leased line and the settings of the modems The timing scheme recommended is this application is for the Tx and Rx Clocks of each unit to be set to External while the clocks of the modems are set to Internal for both or Internal for one and Loop for the other 29 ET100A 232 ET100A 232 Figure 6 Bridging over Synchronous leased line ...

Page 30: ...onverter to provide connection over G 703 64Kbps services If the G 703 transmit and receive clocks are provided by the central carrier each G703 64K converter will be set to centra directional line timing Both ET100A s will have their Tx Rx clocks set external Figure 7 ET100A bridge over G 703 64K services 30 ...

Page 31: ...logies Inc Fax 886 2 27991355 Tel 886 2 26591021 Attn Technical Support Department techsupport ctcu com From Company Name Tel Fax MODEL ET100A ACTIVITY As attached in DIP switch setting table SYS CONFIGURATION Question ...

Page 32: ...ON OFF ON OFF SW1 1 Protocol Selection 2 Protocol Selection 3 WAN Clock Source 4 CTS DSR DCD 5 LAN Flow Control 802 3x 6 Auto Forced 7 10M 100M 8 Full Half Duplex manual 9 NA reserved SW2 1 WAN I F Type 2 WAN I F Type 3 WAN Clock Rate Internal 4 WAN Clock Rate Internal 5 WAN Clock Rate Internal 6 WAN Clock Rate Internal 7 WAN Clock Rate Internal 8 WAN Clock Rate Internal 9 WAN Clock Rate Internal ...

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