Tut Systems Network Card XL 12000B User Manual

XL-12000B  
High-Speed Network Modem  
USER GUIDE  
TUT SYSTEMS  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
Changes or modifications not expressly approved by the party responsible for compliance could void the  
user’s authority to operate the equipment.  
The information contained in this publication is the latest available. However, Tut Systems reserves the  
right to change specifications of hardware and software without prior notice. Purchasers of Tut Systems’  
products should make their own evaluation to determine the suitability of each product for their specific  
application. Tut Systems’ obligations regarding the use or application of its products shall be limited to  
those commitments to the purchaser set forth in its Standard Terms and Conditions of Sale for a deliv-  
ered product.  
Published by Tut Systems, Inc.  
2495 Estand Way  
Pleasant Hill, CA 94523-3911  
925-682-6510  
fax 925-682-4125  
Copyright © 1998 by Tut Systems, Inc. All rights reserved.  
No part of the contents of this manual may be reproduced or transmitted in any form or by any person  
without written permission from the publisher.  
Printed in the United States of America.  
Tut Systems Manual P/N 220-03310-10 120798  
ii  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
Contents  
1.0  
2.0  
3.0  
4.0  
5.0  
5.1  
5.2  
6.0  
7.0  
8.0  
XL-12000B Product Overview  
1
2
Technical Specifications  
What’s in the Box  
3
Installation  
4
Panel Indicators and Connectors  
Front Panel Indicators  
7
7
Rear Panel Indicators and Connectors  
Power and Boot Up Sequence  
Troubleshooting  
9
10  
11  
13  
14  
15  
Technical Assistance and Customer Support  
Appendix A: Pinout Assignments  
Appendix B: Measuring Line Length  
Figures  
Figure 4.1  
Figure 4.2  
Figure 4.3  
Figure 5.1  
Figure 5.2  
Figure B.1  
RJ-45 10 Base-T Straight-through Cable  
4
5
RJ-11 DSL Line Cable  
XL-12000B Installation with a Hub or Node  
XL-12000B Front Panel  
6
8
XL-12000B Rear Panel  
9
Using and Ohmmeter to Measure  
the Length of Phone Wire  
15  
Tables  
Table A.1  
Table A.2  
RJ-45 10Base-T Ethernet Connector  
on Rear of Modem  
14  
14  
RJ-11 DSL Line Connector on Rear of Modem  
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iii  
XL-12000B  
HIGH-SPEED NETWORK MODEM  
1.0 XL-12000B Product Overview  
The XL-12000B modem is a high-speed, SDSL (Symmetrical  
Digital Subscriber Line) point-to-point modem created to extend  
Local Area Networks (LANs) up to 12,000 feet using ordinary  
telephone wires. The modem uses Digital Subscriber Line (DSL)  
transmission technology to deliver data at 2 Mbps.  
The XL-12000B is designed for easy installation. Front panel LEDs  
provide status and operational information. The modem is ideally  
suited for connecting LANs in a campus environment where LANs  
may be spread out over two miles. The XL-12000B units function  
as a pair; one as Master and the other as Slave. The XL-12000B will  
function as a bridge using Spanning Tree Protocol (STP) connecting  
two independent segments. This mode allows the modem to pass  
both IP and non-IP packets transparently making the segments a  
single network. Examples of non-IP packets include Novell’s IPXTM  
and Apple’s AppleTalkTM.  
1.0 XL-12000B PRODUCT OVERVIEW  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
2.0 Technical Specifications  
Data Rate:  
2.048 Mbps  
Line Length:  
Up to 12,000 ft. on 24 AWG wire  
Up to 9,000 ft. on 26 AWG wire  
Ethernet Interface:  
Operating Voltage:  
Power Consumption:  
Compliant with IEEE 802.3 10Base-T  
120/240 VAC 50/60 Hz wall transformer  
5 Watts  
Operating Temperature: -5˚ to 55˚ C  
Storage Temperature:  
Relative Humidity:  
Compliance:  
-40˚ to +70˚ C  
5% to 90% (non-condensing)  
UL, CSA, CE, FCC Part 15 Class A  
Software:  
Spanning Tree Protocol (STP) Bridging  
(rfc-1493)  
2
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2.0 XL-12000B TECHNICAL SPECIFICATIONS  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
3.0 What’s in the Box  
Confirm that there is one each of the following items:  
Description  
XL-12000B Modem  
XL-12000B User Guide  
RJ-45 10Base-T Straight-through Cable  
RJ-11 DSL Line Cable  
Wall Transformer w/ Lightning Protection  
3.0 WHAT’S IN THE BOX  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
4.0 Installation  
1. Remove the modem and wall transformer from the shipping  
carton. Remove the wall transformer from its box. Remove the  
plastic wrapper from around the modem.  
2. Remove the cable ties from each of the cables and place them  
side by side.  
Each of the cables is identified as follows:  
(1) RJ-45 10Base-T straight-through cable: A cable with RJ-45  
connectors is used to connect the modem to a 10Base-T  
hub or node. If connecting to a node (PC, server or work-  
station), the switch on the back of the modem will allow  
this cable to be used like a cross-over cable (Figure 4.1).  
Figure 4.1 RJ-45 10 Base-T Straight-through Cable  
8
1
2
1
2
1
3
6
3
6
1
8
(2) RJ-11 DSL Line cable: A cable with RJ-11 connectors at  
each end. RJ-11 connectors have four contacts and are  
smaller than the RJ-45 connectors, which have eight contacts.  
The diameter of the RJ-11 cable is smaller than the RJ-45  
cable. This cable is used to connect the modem to the  
telephone jack (Figure 4.2).  
Note: RJ-11 cables generally have four contacts and six pinout  
positions. The pinout assignments for the RJ-11 and RJ-45  
connectors are provided in Appendix A.  
4
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4.0 INSTALLATION  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
Figure 4.2 RJ-11 DSL Line Cable  
5
2
3
4
3
4
2
5
3. Select a convenient location near the Ethernet device to which  
the modem will be connected. The modem should be kept away  
from excessive heat or cold. Operating temperature range is  
-5˚C to 55˚C.  
4. Connect an RJ-45 straight-through cable from the 10Base-T  
Ethernet connector of the XL-12000B to an Ethernet device (PC,  
server, workstation or hub) as shown in Figure 4.3. If connecting  
to a PC, server, or workstation, set the Ethernet connection  
switch on the back of the modem to the “Crossed” position.  
If connecting to a 10Base-T hub, set the switch to “Normal”.  
5. Connect the RJ-11 DSL Line cable from the DSL connector on  
the modem to the telephone jack.  
6. Verify that you have a telephone line linking the two XL-12000B  
modems. Verify that this line has no bridge taps and is generally  
free of noise.  
7. Connect the wall transformer as shown in Figure 4.3.  
4.0 INSTALLATION  
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HIGH-SPEED NETWORK MODEM  
Figure 4.3 XL-12000B Installation with a Hub or Node.  
Ethernet Connection Switch  
in Normal (Hub) Position  
RJ-45  
Straight-through  
Cable  
Note: The Ethernet connection switch facilitates use with either type of device.  
6
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4.0 INSTALLATION  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
5.0 Panel Indicators and Connectors  
This section describes the indicators and connectors on the front  
and rear of the XL-12000B modem.  
5.1 Front Panel Indicators  
Fig. 5.1 shows the LED indicators that provide status and  
operational information on the XL-12000B Modem.  
Power LED  
The blue Power LED remains lit while the unit has power.  
Activity LEDs  
The DSL RX and DSL TX LEDs flash green when receiving and  
transmitting data.  
Status LED  
At power up, the Status LED flashes red while the modem performs  
a diagnostic self-test and performs software decompression. After  
the modem completes its self-test, the LED will extinguish,  
indicating that the modem is ready for normal operations.  
Steady red indicates one of two conditions: 1) the link is lost and  
the modems are trying to establish a link or 2) there is a unit failure.  
DSL Link  
A flashing DSL link LED indicates that the modem is in the  
process of linking to the other modem. After the two XL-12000B  
units have secured the DSL link, the DSL Link LED glows a  
steady green. The LED is off when there is no link.  
Master/Slave Switch  
One XL-12000B serves as the Master unit and the other serves as  
Slave. It does not matter which unit of the pair is set to “Master”  
and which is set to “Slave”, but the pair must have opposite settings.  
Changing this switch does not require the user to reboot the modems.  
5.0 PANEL INDICATORS AND CONNECTORS  
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HIGH-SPEED NETWORK MODEM  
Figure 5.1 XL-12000B Front Panel  
DSL RX  
Flashing Green: On when receiving data.  
POWER  
Blue  
DSL TX  
Flashing Green: On when transmitting data.  
MASTER  
SLAVE  
XL-12000B HIGH SPEED LAN MODEM  
STATUS  
DSL LINK  
MASTER/SLAVE  
Select one unit  
of each pair as  
Master and the  
other as Slave.  
Flashing Red:  
Steady Green:  
Normal link.  
Power up self-test or software  
download in progress.  
Flashing Green:  
Linking  
(about one minute).  
Off: Normal condition.  
Steady Red: Board failure.  
Contact Tut Systems  
Customer Support.  
Off: No link.  
8
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5.0 PANEL INDICATORS AND CONNECTORS  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
5.2 Rear Panel Indicators and Connectors  
10Base-T Link LED  
A green LED indicates a valid Ethernet link. When flashing, the  
LED indicates traffic on the link. When the LED is off, there is no  
valid link.  
Figure 5.2 XL-12000B Rear Panel  
10BASE-T  
ETHERNET  
12VDC  
DSL  
10BASE-T  
LINK  
ETHERNET  
CONNECTION  
NORMAL CROSSED  
CONNECT  
TO HUB  
CONNECT  
TO NODE  
RJ-45  
RJ-11  
XL-12000B  
Power Connection  
10Base-T  
Link  
DSL Connector  
To the telephone  
line for the remote  
modem.  
Green:  
Indicates valid  
Ethernet link.  
Ethernet  
Connection  
Normal:  
Select Normal if  
connecting to a  
hub.  
Flashing Green:  
Indicates activity.  
Off: No link.  
10Base-T  
Ethernet Connection  
Crossed:  
To connect to a PC, server,  
workstation, or hub.  
Select Crossed if  
connecting to a  
node (PC, server,  
or workstation).  
5.0 PANEL INDICATORS AND CONNECTORS  
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HIGH-SPEED NETWORK MODEM  
6.0 Power and Boot Up Sequence  
1. Verify that the LAN and DSL lines are connected according  
to the wiring diagram described in the “Installation” section  
(see Figure 4.3.  
2. Plug the 120 VAC/12 VDC wall transformer (220VAC for  
international use) into a wall outlet. Verify that the Power (blue)  
LED comes on.  
3. Verify that the 10Base-T Link (green) LED on the rear panel is  
illuminated. If the unit is not connected to an Ethernet (10Base-T)  
source (e.g., computer), this LED will illuminate momentarily  
on power-up and then extinguish. When properly connected,  
the 10Base-T Link LED will be lit continuously.  
4. Immediately upon power-up, the modem will begin its boot-up  
routine. The Status LED flashes red as the modem cycles  
through its initialization process. After initialization the DSL  
link light will blink and the Status light will remain red. If the  
DSL link light does not blink, refer to the “Troubleshooting”  
section. If the link time takes longer than one minute, refer to  
the “Troubleshooting” section.  
5. The modem is now ready for operation.  
10 TUT SYSTEMS  
6.0 POWER AND BOOT UP SEQUENCE  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
7.0 Troubleshooting  
This section is designed to assist in troubleshooting the XL-12000B.  
It also describes how to reach Technical Support at Tut Systems.  
Tut Systems takes pride in its products and would be more than  
happy to help with problems associated with the XL-12000B.  
Please take a moment and review the following answers to  
commonly asked questions before calling Technical Support.  
1. The blue Power LED remains off.  
Verify that the wall transformer is plugged into an electrical  
outlet and that the connection to the modem is secure.  
Confirm the modem is plugged into a “live” electrical outlet.  
Make sure no light switch controls the plug and has been  
inadvertently turned off. It is not a recommended configuration  
to have the modem plugged into an electrical outlet that is  
controlled by a light switch.  
2. The Status LED continues to stay red and the DSL link LED is  
not blinking.  
Try power cycling the modem by unplugging the modem and  
plugging it back in.  
If after power cycling the Status LED remains red, contact  
Customer Support.  
3. The DSL Link LED never starts blinking.  
The DSL line is not plugged in or the DSL line is not properly  
connected to the “remote” end. Verify that the cable is properly  
connected at both ends.  
Both modems have the same setting on the Master/Slave switch.  
Verify by checking both modems’ Master/Slave switch on the  
front panel. Make sure that one of the modems is a Master and  
the other is a Slave. Check all patch cables to be sure the pinout  
is correct and connections are well seated.  
7.0 TROUBLESHOOTING  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
4. The DSL Link LED blinks for a long time.  
Blinking for a long time can indicate failure to communicate with  
the other modem within the acceptable noise parameters or that the  
distance between modems exceeds 12,000 feet. Verify the length of  
the DSL line and ensure it meets the length limits described in  
Appendix B. If it meets the limits, then have the line tested  
for defects.  
Another reason for continuous blinking is that both modems  
are either Masters or Slaves. Verify by checking both modem’s  
Master/Slave switch on the front panel. Make sure that one of the  
modems is a Master and the other is a Slave. A Master modem  
will send out a pulse on the wire to try and communicate with a  
Slave modem.  
5. The 10Base-T LED never illuminates.  
If connecting to a hub, make sure the Ethernet connection switch on  
the back of the modem is set to “Normal”. Check the hub to see that  
its link light is illuminated. If the light is still not illuminated, try a  
different straight-through cable.  
If connecting to a PC, server, or workstation, make sure the Ethernet  
connection switch on the back of the modem is set to “Crossed”.  
Verify that the link light is illuminated on the PC.  
If the 10Base-T cable being used was not the cable provided,  
make sure it adheres to the pinout assignments for 10Base-T  
(see Appendix A).  
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7.0 TROUBLESHOOTING  
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HIGH-SPEED NETWORK MODEM  
8.0 Technical Assistance and  
Customer Support  
Maintenance and Repair  
Tut Systems offers a comprehensive range of customer support  
services, including technical assistance, installation, and maintenance  
agreements. For further information and pricing on Tut’s service  
products, contact your sales representative.  
Advance replacement, on-site, or remote technical support are all  
available 7 days a week, 24 hours a day through the Premier  
Maintenance Contract program. Extended Warranty options are also  
available. See your sales representative for details. Further product  
information is available at www.tutsys.com.  
Technical Support  
Application notes and answers to the most common functionality,  
installation, and configuration questions can be found on our web  
unable to resolve any question or believe you have defective equip-  
ment, contact Tut Systems Monday - Friday 5:00am to 8:00pm  
(Pacific Time) at (800) 998-4888. If you do not have access to  
800 service, please call (925) 682-6510, press “0” and ask for  
Technical Support.  
Equipment Return and Repair  
If you are unable to correct a problem or are instructed by  
Technical Support to return the unit for further testing or repair,  
you will be provided with directions on how to return equipment.  
Do not return products to Tut Systems without first obtaining a  
return authorization number.  
Steps prior to shipping equipment:  
• Contact the Technical Support department and request an  
RMA number (return merchandise authorization).  
• Write the RMA number on outside of shipping box.  
• Units without proper return authorization will be returned to sender.  
Return all equipment to:  
Tut Systems, Inc., 2495 Estand Way, Pleasant Hill, CA 94523  
(925) 682-6510 • (925) 682-2170 fax  
8.0 TECHNICAL ASSISTANCE AND CUSTOMER SUPPORT  
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XL-12000B  
HIGH-SPEED NETWORK MODEM  
Appendix A: Pinout Assignments  
Table A.1. RJ-45 10Base-T Ethernet Connector on Rear of Modem  
Pin #  
Mnemonic  
Tx+  
Function  
1
2
3
4
5
6
7
8
10Base-T differential transmit signal (+)  
Tx-  
10Base-T differential transmit signal (-)  
Rx+  
NC  
10Base-T differential receive signal (+)  
Unused  
NC  
Unused  
Rx-  
10Base-T differential receive signal (-)  
NC  
Unused  
Unused  
NC  
Note: Assumes the switch on the rear of the unit is in the “Normal” position.  
Table A.2. RJ-11 DSL Line Connector on Rear of Modem  
6-pin connector  
4-pin connector  
Pin #  
Mnemonic  
NC  
Function  
Unused  
Unused  
DSL (+)  
DSL (-)  
Pin #  
Mnemonic  
NC  
Function  
Unused  
DSL (+)  
DSL (-)  
1
2
3
4
5
6
1
2
3
4
NC  
TIP  
TIP  
RING  
NC  
RING  
NC  
Unused  
Unused  
Unused  
NC  
14 TUT SYSTEMS  
APPENDIX A: PINOUT ASSIGNMENTS  
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HIGH-SPEED NETWORK MODEM  
Appendix B: Measure Line Length  
Measuring Phone Wire  
1. Use a cable scanner or an ohmmeter to measure the lengths of  
phone wire that will connect the modems. When using an ohm-  
meter, short-circuit one end of the phone wire and measure the  
resistance between the two wires at the other end .  
Figure B.1 Using an Ohmmeter to Measure the Length of Phone Wire  
600  
Ohmmeter  
Short Pair  
Together  
OHMS  
Punchdown  
Block  
Punchdown  
Block  
2. Multiply the resistance by 20 to find the length of the wire in  
feet. For example, 600 ohms would indicate a cable length of  
about 12,000 feet: 600 x 20 = 12,000 (+/-). This formula works  
for 24-gauge phone wire.  
APPENDIX B: MEASURE LINE LENGTH  
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User Guide for the High-Speed Network Modem  
XL-12000B  
2495 Estand Way, Pleasant Hill, CA 94523  
800.998.4888 or 925.682.6510  
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