What is the right rs232 cable to connect a Denon...

Hi,

I'm trying to connect my Denon 3808CI Audio/Video Reciever to a Phillips RFX9600 serial extender using an RS232 DB9 male to DB9 Female rs232 cable. Essentially, this allows me to use a universal remote to use RF frequency to control my reciever, a much more reliable way to control my equipment and also allows 2 way communication with my universal remote (so that my remote can display what the volume level is and what radio station is on).

Anyways, I'm not sure what the proper RS232 cable to get/make for this connection is. The RF9600 requires a male DB9 plug, the denon 3808CI requires a Female DB9 plug. The Phillips RFX9600 is really light on details for what type of rs232 cable is needed, but I have read on a forum website called Remotecentral that it only requires pins 2, 3, and 5. As for the Denon 3808, here are the Serial specifications given for that amp:
-----------------
Connector Specification: RS232C
Connector Type: DB-9 Female type, Slave Straight connection(DCE Type)
(1pin : GRND, 2pin : TxD, 3pn : RxD, 5pin : Common(GND), 4,6,7,8,9pin : NC )
:::Communication Format:::
Synchronous System : Tone Step Synchronication
Communication System : A half duplex
Communication Speed : 9600kps
Character Length : 8 bits
Parity Control : none
Start Bit : 1 bit
Stop Bit : 1 bit
Communication Procedure : Non Procedural
Communication Data Length : 135 Bytes (Maximum)
----------------------------

So if anyone can make sense of all this and could point me to the right cable to get for this connection or what the pinout connections should be if i want to make my own cable (db9 male to db9 female) that would be exteremely helpful. Im fairly confused by most of this rs232 stuff so any help at all would be great.

Thanks,

Eason