I am un able to assign any ringing of any line to the opx Ext.

Im also taking a guess that when you say Co 9 your refering to the reference co setting I have reference CO 01 to Co 27

Co 27 is assigned as my frist opx Ext 281.

I talked to the tech who was out on site and he said that alls he did was change the reference co and the system started ringing

I have setup the Ref. but system is still not ringing on the OPX ext. Im thinking there may have been someother setting that im missing.

Any Ideals? Because Im lost.