Google Voice: automatically press 1 when answering???

Is there an app that will automatically press 1 when answering a call from someone who called the google voice number?

I would prefer not to turn off 'call screening' because if my cellphone is off or doesn't have service (e.g. at work), any calls to my google voice number will go to voicemail instead of ringing my other phones.

I recently learn off the Tasker app. Can this be configured to do this?

Thanks in advance.