Putting it as a term of an AVO means if you do assault the protected person, you don't just get charged with the assault, but with breaching the AVO. There is a presumption in favour of bail for an allegation of assault, but not for breaching an AVO.
Having an AVO against you is not a criminal offence, and people consent to them without admissions all the time. But breaching one IS a criminal offence, and if that breach involves anything remotely threatening and/ or an assault (as opposed to, say, randomly being in the same place as the protected person by accident at like a shopping centre or whatever), you generally won't get bail for breaching it and will be in gaol until the trial comes along.
The courts generally grant AVOs when they're sought and take breaches of them very, very seriously because no one wants to be the magistrate who doesn't, only to have some bloke go over and top his ex.