iiNet's new 4G mobile business plans provide free calls between handsets on the same account as well as free voicemail, which can be a big cost saver.
The iiNet plans start at $14.95 per month, which gets you $200 of 'call value' (at 90c per minute for most calls) plus 200MB of data.
There are also $29, $49 and $69 plans which variously include standard SMSes, calls to fixed lines, and standard mobile calls (all within Australia).
All of these prices are on a SIM-only basis with no lock-in contracts, but iiNet also offers a range of Samsung handsets including the 4G Galaxy S4 and Galaxy Note 2 for outright purchase or on monthly payments.
The plans are only available to iiNet's fixed internet business customers.