2.5mm to DB9F Cable 6FT

2.5mm TRS Connector to DB9-Female Connector 6 Feet.
Specializied Control Wire for Interface to Assorted Devices.

Connector Wiring
Shield - 5 - Ring 
1 - Open
2 - Tip
3 - Sleeve
4 - 6
7 - 8
9 - Open