Appendix E: Connector Pinouts122 ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1DTable E-DRS-366 InterfacePin Name I/O Description1 ........................... Shield ................... I/O ........ Shield for cable2 ........................... DPR ...................... I ............. Digit Present3 ........................... ACR...................... O........... Abandon Call and Retry4 ........................... CRQ ..................... I ............. Call Request5 ........................... PND ..................... O........... Present Next Digit6 ........................... PWI...................... O........... Power Indication7 ........................... SG ....................... I/O ........ Signal Ground13 ......................... DSC ..................... O........... Distant Station Connect14 ......................... NB1 ..................... I ............. Digit LSB15 ......................... NB2 ..................... I ............. Digit bit 216 ......................... NB4 ..................... I ............. Digit bit 317 ......................... NB8 ..................... I ............. Digit bit MSB22 ......................... DLO...................... O........... Data Line Occupied8-12 ....................... NC ...................... N/A....... No Connection18-21 ..................... NC ...................... N/A....... No Connection23-25 ..................... NC ...................... N/A....... No ConnectionI = Input ..............O = Output........ ............ N/A = Not ApplicableFigure E-5RJ-45 Dial Line Connector U InterfaceTable E-ERJ-45 Dial Line Connector U InterfacePin Description4 Ring5 TipISDNPIN 1 PIN 8
