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| Connecting the Computer to the Wall Jack The following instructions are for connecting the computer to the wall port (TSO) and activating connections in the TSO. It is important to connect your computer to the wall before proceeding to the next step (Registering a Computer). Most models of Macintosh computers will not report an ethernet hardware address unless they are connected to an activated TSO jack. You do not need to activate a particular port in the TSO if another computer was previously using it. The only TSO port that definitely requires activation is the phone-net connection. This is an obsolete connection that is being replaced by ten-base-T. |
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The TSO | |||
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Whenever possible, you should connect your computer directly to the TSO and not to an existing cable connection. Underneath the each lab desk you should find a wall plug that looks like this: |
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| Clockwise from top left, the inputs are: appletalk phonenet (port 'B'), Ten-base-T (port 'A'), cable connection for televisions, and BNC connection. If a TSO has the top two connections only, it is not an networking TSO but a unit for telephone connections.
Many computers at Beckman are connected to the BNC cable (bottom left) using a BNC cable. This cable can be daisy-chained to connect a dozen or so computers from one wall plug. Supply of these cables is severely constrained. The best connection to use is the Ten-base-T connection in the top right corner. If this is already in use, you can fill out the form at the bottom of the page (Activate a Jack) to activate the phone-net (top left) connection to operate as a ten-base-T connection. This is the only connection on the TSO that you need to report for activation - the other connections are active already. Note the two numbers printed on the TSO (in the picture above, the numbers are 4.2 and 4198). These numbers uniquely identify each TSO. You will need to submit both numbers to report which TSO to activate. Please specify which port to activate as well ('B' is top left, 'A' is top right). Do not disconnect existing cables unless they are not being used by other computers. |
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I don't see where I can connect these cables to the back of my computer! | |||
If you are using a Macintosh, note that many of these computers (pre-1995) often require a Transceiver, a small device that connects to the back of the computer to accomodate BNC or Ten-base-T connections. If you are purchasing an ethernet card or a Transceiver, choose one that accomodates Ten-base-T, not BNC cable connections. Laptop computer users may need to purchase an Ethernet PC-card. Try to pick up an Ethernet PC-card with a built-in modem to use at home. Transceivers and ethernet cards are available at any computer store. Ethernet cards for desktop computers cost well under $100, transceivers are $50. Laptop modem/ethernet PC cards cost about $250. |
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Where can I get the cables? | |||
Using the form below, you can submit a request for a cable or pick one up from B403. Specify the type of cable and the length. Verify that your computer's ethernet card can accommodate the necessary cable (some older model computer's ethernet cards cannot accommodate a Ten-base-T cable). The two cables are Round BNC Connection Cable and Ten-base-T (thin net): |
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  BNC CableTen-base-T Cable |
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| Note that the Ten-base-T plastic cable cap is about twice the width of a regular phone cable and has room for eight pins, not four.
We are trying, whenever possible, to move away from using BNC cable connections. Ten-base-T cable connections are superior both in network speed and ease-of-connectivity. The Ten-base-T network at Beckman is a category 3 network (not 5, which is standard) - therefore, the plug in the wall accommodates a Ten-base-T cable with a plug that is a lot like a phone plug, while the part that connects to the computer is a regular, 8-pin Ten-base-t connector. |
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The form below is for TSO jack activation, requests for cables, and requests for cabling help.
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Name: Your Email: Room Location: Department Name: Biochemistry Cable requested and approximate length: TSO Jack Number: ie. 4.2, 4198, port 'A' |
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Requesting Help | |||
By submitting the form above, you are requesting help for connecting your computer to ethernet - even if the TSO is fully activated. You should still continue with the next steps, Registering a New Computer and Configuring your Computer for Ethernet to expedite the process. |
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Registering a New Computer for Ethernet Use | |||
If you are registering a new computer for Ethernet use, select one of these links depending on your platform: Register my Macintosh (with instructions) Register my Windows PC (with instructions) |
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Last Updated: Tuesday, February 23, 1999 |
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