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Overview The 3820Plus modem, Model 3982-A1-401 (Figure 1), has different installation instructions than those shown in the COMSPHERE 3800Plus Modems User’s Guide (3980-A2-GB30). The Model 3982-A1-401 modem has an 8-pin modular jack for leased-line connection and a 6-pin modular jack for dial-line connection. The model...
3820 Plus Modem Installation Before installing your modem, make sure your installation site is clean and well-ventilated. Allow space around the modem for installing cables and telephone cords, and make sure the modem is located within reach of the ac power outlet. The distance between your modem and the DTE should be minimized if DTE data rates exceed 19,200 bps.
Figure 2 shows how 3820Plus modems are connected to certain TELCO jack types using the supplied cables. For other TELCO connections, refer to Appendix D of the COMSPHERE 3800Plus Modems User’s Guide. 3820 Plus Dial-Line Connection Use the following procedure to connect the 3820Plus modem to the dial network interface: 1.
LCD. Although a failure has occurred, the modem may attempt to operate. If it does, you can activate a more thorough self-test using the Test branch. Refer to Chapter 6, Test Branch, in the COMSPHERE 3800Plus Modems User’s Guide. CC OUT/DC IN...