(more)
Here is the Spec. of the PANASONIC ET-ADSER: Mini-DIN 8 (male) to DB-9 (female) 1 to 7 : CTS * 2 to 8 : RTS * 3 to 3 : TXD 4 to 5 : GND 5 to 2 : RXD 6 to nothing : DSR (if U want is to 6)* 7 : NC 8 : NC N.B. : Only RXD,TXD and GND R needed * (more)