Installing the Model 3550 DSU2-113550-A2-GB20-40 July 1999Connecting Port 2For the EIA-232 cable, install as described above.For the V.35 cable, install the V.35 adapter, then theV.35 DTE cable as follows (refer to Figure 2-7). Procedure1. Reconfigure the port to match the interface, V.35in this example.2. Connect the 25-pin plug end of the V.35 adapter toPort 2.Tighten the holding screws.3. Connect the plug end of the 34-pin V.35 DTEcable to the other end of the V.35 adapter.Tighten the holding screws.4. Connect the other end of the DTE cable to theappropriate port on the computer or DTE.Tighten the holding screws.Refer to Chapter 4 to learn how to reconfigure theDSU’s port(s).Verifying Operation andTesting ConnectionsVerification testing should be performed after anyinstallation.After installing and configuring the circuit (includingcontrol and tributary DSUs, the DDS network, the DBMsand their dial connections), perform the following seriesof tests from the control DSU to verify network operation(using either the DCP or NMS).Verifying Network AddressesAccess the DSU’s identity (ID) subbranch for eachtributary DSU to ensure that the DSUs are properlyaddressed. Refer to Chapter 5 for an example using theDCP, if needed. Procedure1. Select Remot (Remote branch).2. Enter the tributary’s network address.3. Select Stat (Status branch).4. Press the key until ID appears.5. Select ID.6. Press the key until Network Addr appears.7. Verify that the correct address has been entered.Repeat this procedure for each tributary DSU in thenetwork.Verifying the NetworkPerform a Digital Test on the DDS circuit to ensurethat the network is functioning. Procedure1. Select Test (F3).2. Select DSU (F1).3. Press the key until DT appears.4. Select DT.5. Select Start (F1).6. Select a port.7. Enter the address of the remote DSU.8. Select the amount of time you want the test to runin hours: minutes: seconds (hh:mm:ss).• Press the or key to move the blinkingcursor to the digit to be changed.• Press the F1 () key to increment the digit(1 through 9).• Press the F2 (↓) key to decrement the digit.9. Select Enter (F3). Please wait appears as the DSUstarts the test.10. When Command Complete appears, press thekey.11. Select Displ (F1) to display the results of the test.Table 4-6 in Chapter 4 shows the informationreceived from a Digital Test.12. Press the key to scroll through each result.