Compatible Systems MicroRouter 900i - Manual (Page 36)

30 Appendix B - Connector and Cable Pin Outs
Notes:
1. This cable is a null-modem DTE-to-DTE cable.
2. Because it is a null-modem cable, it can be connected
“back-to-back” with a DCE/Male data cable in order to create a
router-to-router test connection cable.
5 Rx Data <- 2 Tx Data
6 Tx Clock <-> 17 Tx Clock
7 DCD <- 8 DCD
8 Rx Clock <- 15 Rx Clock
Shield <-> Shield