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User Manual
Model 7520 DSU
Startup Instructions
Document Number 7520-A2-GN10-10
December 1998
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7520-A2-GN10-10
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Complete documentation for this product is available at www.paradyne.com.
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Select the following document:
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Model 7520 DSU User's Guide
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Outside the U.S.A., call 1-727-530-8623
Verify that your package contains the following:
- A Model 7520 Single Port DSU
- Power cord with power transformer
- RJ48S modular cable for U.S. network access (14 )
No DTE cables are provided. Additional cables may need to be ordered.
December 1998
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Summary of Contents for Paradyne 7520
- Page 1 Outside the U.S.A., call 1-727-530-8623 Package Checklist Verify that your package contains the following: - A Model 7520 Single Port DSU - Power cord with power transformer - RJ48S modular cable for U.S. network access (14 ) No DTE cables are provided. Additional cables may need to be ordered.
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Page 2: Site Preparation
Standard crossover EIA-232 cable with DB25 plug connectors on both ends. V.35 cable with an MS34 plug connector on one end and an MS34 socket connector on the other end. Standard straight-through EIA-232 cable with DB25 plug connectors on both ends. December 1998 7520-A2-GN10-10... - Page 3 Installing Your DSU AC Adapter Terminal Connection Network Connection RJ48S EIA-232 V.35 Jack Connection 97-15781 7520-A2-GN10-10 December 1998...
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Page 4: Installing The Power Cord
2. Insert the other end of the cable into the VT100-compatible terminal. 3. Press Return on the keyboard to display the Main Menu. Terminal Port TERMINAL POWER TERMINAL POWER To Connect to a PC or Async Terminal December 1998 NETWORK 97-15782 NETWORK 97-15783 7520-A2-GN10-10... -
Page 5: Connecting To A Dte
Connecting to the Network " Procedure 1. Insert the 8-pin connector on the RJ48S network cable into the NETWORK jack. 2. Insert the other end of the cable into the RJ48S modular jack. POWER 7520-A2-GN10-10 TERMINAL POWER DTE Port TERMINAL RJ48S Jack... -
Page 6: Hardware Verification
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î If the DSU fails to respond as described, refer to Chapter 6, Messages and Troubleshooting , in the User’s Guide. 7520 DSU System Network... -
Page 7: Identifying The Device And System
The DSU is shipped with factory settings in the Default Factory configuration area. The defaults are shown in the configuration options tables. 7520-A2-GN10-10 Control Device Name DEVICE NAME Node A ________________________________________ ________________________________________ ________________________________________ December 1998 Model: 7520 Clear Clear Clear Clear Î Î Î Î MainMenu Exit... -
Page 8: System Options Menu
This is a point-to-point application; also known as LDM. Configuration (Load Configuration From) Configuration Edit/Display Load • System Configuration • Network From ... • Data Port • Terminal Port 497-15239 Configuration (Load Configuration From) System December 1998 7520-A2-GN10-10... - Page 9 Test Duration (min) option appears when Test Timeout is enabled. 1 to 120 – Amount of time in minutes for a user-initiated test to run before terminating. 7520-A2-GN10-10 Tests commanded by the DTE or network-initiated tests are not affected by this test timeout.
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Page 10: Network Interface Options Menu
Enable – DSU loopback can be initiated or terminated by a remote unit sending in-band V.54 Loop 2 Up or Down sequences. Disable – V.54 Loop 2 sequences are ignored. Configuration (Load Configuration From) Network Operating Mode December 1998 Operating Mode is set to DDS 7520-A2-GN10-10... -
Page 11: Data Port Options Menu
Circuit RL (CT140), as specified by V.54. The remote equipment must be able to detect the in-band V.54 loopback sequence. Both – Both the local and remote loopbacks can be controlled by the DTE. 7520-A2-GN10-10 Configuration (Load Configuration From) Data Port... - Page 12 150 ms delay is inserted before CTS is turned on and after RTS is turned on. Long Delay – CTS operates as described for the Standard option except that a 500 ms delay is inserted before CTS is turned on and after RTS is turned on. December 1998 7520-A2-GN10-10...
- Page 13 Enable – The DSU monitors the state of DTR on the DTE port and displays it on the System and Test Status screen. Disable – DTR is not monitored by the DSU. Use when a DTE does not provide the DTR lead at the interface. 7520-A2-GN10-10 December 1998...
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Page 14: Terminal Port Options
Timeout is based on no keyboard activity. Disconnect Time(minutes) option appears when Inactivity Timeout is enabled. 1 to 60 – The ATI user session is closed after the selected number of minutes. Configuration (Load Configuration From) Terminal Port December 1998 7520-A2-GN10-10... -
Page 15: Important Safety Instructions
— Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightning. — Do not use the telephone to report a gas leak in the vicinity of the leak. 7520-A2-GN10-10 December 1998... -
Page 16: Government Requirements
Your telephone company may make changes in facilities, equipment, operations, or procedures that could affect the proper operation of your equipment. If so, you will be given advance notice so as to give you an opportunity to maintain uninterrupted service. December 1998 7520-A2-GN10-10... - Page 17 Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. 7520-A2-GN10-10 Warranty, Sales, and Service Information DDS Facility 19.2 38.4...
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Page 18: Document Feedback
Largo, FL 33773, or send e-mail to userdoc@eng.paradyne.com. Include the number and title of this document in your correspondence. Please include your name and phone number if you are willing to provide additional clarification. *7520-A2-GN10-10* Copyright E 1998 Paradyne Corporation *7520–A2–GN10–10*...