Driller's Intercom Systems DX3+ Handsfree Intercom System for Drilling Rigs The PSC VODEC DX3+1 Driller's Intercom System has been specifically designed in conjunction with drilling operations to provide reliable, simple two way voice communications on board a drilling rig. All stations are hands free with priority control from the driller position eliminating troublesome VOX switches and unreliable keypad controls. The system is primarily designed to enhance health and safety on board the rig and is developed to the same high standards of security as the Vodec P3 Public Address and General Alarm (PAGA) System which is a prime life safety package. The DX3+1 system comprises of a central panel, (which carries switching and amplification) Driller's cabin master control, subscriber station(s) and paging loudspeaker(s).