A-8 APPENDIX A: MODEM SPECIFICATION AND INTER FACE PIN ASSIGNMENTSDTE Port Pin AssignmentsEach modem is equipped with a single serial port marked DTE, whichcan be used to enter asynchronous AT or V.25bis commands, and passasynchronous or synchronous user data. This is a female 26-pin V.24connector and can be used with X.21/V.11, v.24/V.28 or V.35/V.36signalling. The cable pin-outs for each type of cable are shown below.X.21/V.11The DTE port terminates with a 26-way miniature SCSI connector. The portcan be configured to support V.11 signalling characteristics. The DTE portconnecting cable is not supplied with the module. The following signallingcharacteristics should be observed when purchasing or fabricating asuitable cable.