Page 2 - Cables You May Need to Order; Cables and Pin; Installing the Dual DSU; Before you install your DSU, read the; Configuring the DSUs; Procedure; To configure the Model 7511 Dual DSU:
2 7511-A2-GN10-10 January 1999 Cables You May Need to Order You will need cables to connect your Network Interface Module (NIM) to thenetwork and your 7511 DSUs to DTEs. For further information refer to thedocumentation shipped with your NIM, and Appendix A, Cables and Pin Assignments, in the User’s...
Page 3 - Model 7511 Switch Locations
3 7511-A2-GN10-10 January 1999 S1 97-15396 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 ON S2 S3 S4 S5 Figure 1. Model 7511 Switch Locations Table 1. Configuration Options (1 of 5) Switch Options and Usage Default in Bold Line Rate S1-1 (DSU A)S3-1 (DSU...
Page 8 - Installing the Rear Connector Plate; To install the rear connector plate:
8 7511-A2-GN10-10 January 1999 Installing the Rear Connector Plate Procedure To install the rear connector plate: 1. At the rear of the carrier, place the tab on the connector plate in its slot in the carrier’s backplane. The connector plate must use the same slot positionintended for the DSU card. ...
Page 9 - Installing the DSU Card; To install the Model 7511 Dual DSU:
9 7511-A2-GN10-10 January 1999 Installing the DSU Card Procedure To install the Model 7511 Dual DSU: 1. Using a Phillips screwdriver, loosen the screw holding the circuit pack lock. Rotate the lock to the open position and open the latch. Circuit Card Guides Circuit PackLock Latch Open (Unlocked) Cl...
Page 11 - Installing the Network and DTE Cables; To install the cables:
11 7511-A2-GN10-10 January 1999 Installing the Network and DTE Cables Procedure To install the cables: 1. Note the location of the 7511 Dual DSU circuit cards in the carrier (Slots 1–8, Slots 9–16, or all slots). 2. Connect network cables to the appropriate NIM and backplane connector according to t...
Page 12 - Troubleshooting; Symptom
12 7511-A2-GN10-10 January 1999 Troubleshooting If the 7511 Dual DSU does not turn on the OK LED after its power-up self-test,refer to the following table. Symptom Possible Cause Recommendations No power, or LEDsare not solidly lit. The power supply to thecarrier has failed. The card is not seatedpr...
Page 13 - Important Safety Instructions; or included in the manual.
13 7511-A2-GN10-10 January 1999 Symptom Recommendations Possible Cause Not receiving data;DSU is notresponding. DDS line rate haschanged Excessive BPVs Excessive loop loss 1. Verify that your subscriber loop is running at 56 kbps or 64 kbps CC. 2. Run Loopback tests. Refer to Chapter 4, Testing, in ...
Page 14 - Notices
14 7511-A2-GN10-10 January 1999 4. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous high voltage points or other risks. Referall servicing to qualified service personnel. 5. General purpose cables are provided with this product. Special cable...
Page 15 - Government Requirements; Notice to Users of the Telephone Network in the United States; DDS Facility; Technical Specifications, in the User’s Guide.; Notice to Users of the Canadian Telephone Network
15 7511-A2-GN10-10 January 1999 Government Requirements Certain governments require that instructions pertaining to connection to thetelephone network be included in the installation and operation manual. Specificinstructions are listed in the following sections. Notice to Users of the Telephone Net...
Page 16 - If your equipment is in need of repair, refer to the next section.; Visit the Paradyne World Wide Web site at; information via fax or to speak with a company representative.
16 7511-A2-GN10-10 January 1999 customer should be aware that compliance with the above conditions may notprevent degradation of service in some situations. Repairs to certified equipment should be coordinated by a representativedesignated by the supplier. Any repairs or alterations made by the user...