Hey there, some of you might be surprised, but modern airplanes do have automatic call function, ergo V1 call is made automatically by nice synthetic voice. All you have to do is decide. I personally will stick to most common Airbus philosophy: up to 100 kt Stop minded, above GO minded, unless severe damage, fire (all mentioned in the airbus manual). I agree that a stop decision near V1 is more critical, as its been proven by statistic, but if its necessary to stop, then do it.
Cheers.
