How it works
Callio is not a diversion based telephone system. Callio utilises a sip trunk service that makes it more secure than VoIP systems because they bypass the public internet and instead use private data connections which decreases the likelihood of any breaches.
Unlike other services that provide customers with a local land line number which diverts inmate calls to a user’s mobile phone, Callio allocates users with their own personal land line number which is registered to their name and operated from the Callio app installed on their mobile phone.
This allows calls made by inmates to the local land line number to come through directly to the users mobile phone. It is this unique feature/unique system which allows Callio to offer users and inmates the cheapest telephone service available because it cuts out the additional costs of diverting the call to a mobile phone number.


Why Callio
Callio is a 100% Australian owned company creating affordable and innovative communication solutions at affordable rates.
Callio is the cheapest and only type of unlimited phone and voice messaging service* of its kind in Australia.
For the cost of 1 cup of coffee per week, you receive unlimited calls from inmates directly to your mobile phone. Coming soon, Callio will also provide customers and inmates unlimited use of the voice messaging system allowing customers to communicate with loved ones in custody any day, any time.