Verilog-A Oscillator Phase noise

Hi,

I have an verilog-A oscillator model which has a certain jitter. Using transient simulation I can get the total period jitter which matches the input jitter to the model. But I would like to have the phase noise across frequency of this model. I know I can't use PSS noise but not sure how to get it using transient simulation. Can anyone help?

Thanks

Regards,
Sherif