On 4/1/14, 12:50 PM, Jeff DePolo wrote: > Did you ground the hang-up line on the TS-64? > > And have you measured the voltage on the logic line to see if it's changing > when PL is or isn't present? Yep, that was it. I feel stupid now :( Thanks! -- Bryan Fields 727-409-1194 - Voice 727-214-2508 - Fax http://bryanfields.net