Starlink for VOIP for busy business

I've been informed that we're getting Starlink and replacing all phones with VOIP (Yeahlink I believe) for our rural business since the telco wants to jack up the price of our old T1 to like $4k/month.

We have a dozen or so phones with a handful of them being used at any given time.

I'm not really loving this idea since the Starlink will still need to support typical data usage and I worry about latency and jitter with that many lines.

Is this too much to ask of a single Starlink terminal?