Terrell Owens 911 Call -- Alleged Suicide Attempt

TMZ has obtained the 911 call placed moments before Terrell Owens was rushed to an L.A. hospital for a possible pill overdose on October 6 -- and according to Terrell's assistant, T.O. was trying to kill himself.

During the call, placed at 11:02 PM, the dispatcher asks the assistant on the phone, "Was this a suicide attempt?" -- and she responds, "Yes, I believe so."

While she was on the phone with the dispatcher, the woman claims T.O. was "talking to his girlfriend, ex-girlfriend ... [I]don't really know what you wanna call it."

T.O.'s rep declined to comment.

T.O. was famously hospitalized back in 2006 for a similar incident -- when he insisted he had a bad reaction to painkillers ... despite reports he tried to commit suicide by swallowing 35 Vicodin pills.

T.O. later held a news conference on the matter and stated, "The rumor of me taking 35 pills, I think is absurd. I don't think I would be here if I had taken 35 pills."