Hi guys!
I have a GN-1215 which has a standard connector (male)(RJ9) and a standard GN Quick Disconnect plug to headset (which instantly connects my jabra headset)
straight 80 cm/31.5 inch cord. rj9 1234=yellow,red,blue,brown.(and it also says something like G 32 and COB on the plug)(basically, GN-1215 is designed for any Avaya hard phones.)
Now, what I wanted to do is to connect it to a PC. So a PC only have this dual 3.5 mm TRS jacks/sockets. The question now, is it possible to create an adapter using an RJ9 jack/socket to a dual 3.5 mm TipRingSleeve plug??? If possible, how?

I'll be very glad to find some answer to this, I've been so desperate.

Thanks!