ADTRAN DSU 5600 User Manual

1 2 DSU 5600 User Manual 61200.078L1-1Chapter 2. InstallationDTE CONNECTIONSThe Data Terminal Equipment is attached to the connectorlabeled PRIMARY EIA-232 at the rear of the DSU 5600. The pinassignments for all pins used on this connector are shown inTable 2-C.Table 2-CPin Assignments for Primary EIA-232 ConnectorPinNumber Function Signal Direction1 AA Protective Ground (PG)2 BA Send Data (SD)3 BB Receive Data (RD)4 CA Request to Send (RS)5 CB Clear to Send (CS)6 C C Data Set Ready (SR)7 AB Signal Ground (SG)8 CF Receive Line Signal Detector (CD)9 - Not Used10 - Not Used11-14 - Not Used15 DB Transmit Clock (SCT)16 - Not Used17 DD Receive Clock (SCR)19-24 - Not UsedA shielded EIA-232 cable is required to prevent possible radio fre-quency interference emissions.