61200.078L1-1 DSU 5600 User Manual 1 1Chapter 2. InstallationNETWORK CONNECTIONSThis interface consists of four leads paired to provide separatetransmit and receive circuits. The four leads are provided on theeight position modular jack (RJ-48S) labeled TELCO on the rearpanel of the DSU 5600. The pin assignments for this connectorare shown in Table 2-B.Table 2-BNetwork ConnectionsPinNumber Function Signal Direction1 Transmit Data (R) From Customer to Network Interface2 Transmit Data (T) From Customer to Network Interface3-6 Not Used7 Receive Data (T-1) From Network Interface to Customer8 Receive Data (R-1) From Network Interface to Customer