Cabling Diagrams
RJ-45 to RJ-45 (DTE), Baytech RPC
RJ-45
Sena
  RJ-45
Baytech
6 TxD ---------- RxD 5
3 RxD ---------- TxD 4
4 Gnd -------|-- Gnd 2
    -------|-- Gnd 7
2 DSR ---------- DTR 1
5 DCD ---------- DCD 8
1 CTS ---------- RTS 3
7 DTR      
8 RTS