How Does a 1300 Number Work?

A 1300 number works by standing between your callers and the phones you already answer. Every call to the number is checked against your routing rules and delivered to a real destination, and every call is billed as a split: the caller pays up to the local call rate, the business pays the rest. Here is how that plays out across four calls to the same business number.

Call 1: a weekday enquiry, simple routing

A customer dials 1300 000 000 at 10am on a Tuesday. The network passes the call to the number's virtual exchange, which applies the only rule the business has set: send everything to the office landline. The desk phone rings; the caller heard ordinary ringing the whole time and has no idea a routing decision happened. The caller's phone bill records a local-rate call; the business's plan records the remaining call cost.

Call 2: the same caller at 7pm — time-based routing

Now the call arrives after hours. The time-based rule diverts it to voicemail-to-email instead of the empty office. The caller leaves a message; the audio lands in the owner's inbox a few seconds later. Same number, same shared cost, different destination — chosen by the clock, not by luck. This is the most common first routing upgrade businesses make.

Call 3: a busy line — overflow routing

At 11am the office phone is already on a call. With an overflow list configured, the exchange does not give up: it tries the next answer point — the owner's mobile — while the caller hears ringing. If the mobile were busy too, the call would walk further down the list. The caller's experience is one continuous ring; the routing happens invisibly between phones.

Call 4: a caller who needs sorting — IVR

This caller reaches a menu: "press 1 for bookings, press 2 for accounts". The exchange routes on the keypress — bookings to the front-desk phone, accounts to the bookkeeper's mobile. One published number now serves several teams, and the business never publishes a staff member's personal digits.

The rule underneath all four

Strip the scenarios back and a 1300 number is doing two things on every call:

1. Routing — applying the holder's rules to deliver the call to a real answer point: one phone, a timed destination, an ordered list, or a menu branch.
2. Cost sharing — charging the caller no more than the local call rate and billing the remaining call time to the business's plan, per second.

Everything else — voicemail-to-email, call recording, reporting, portability — attaches to the number rather than to a handset, which is why the whole setup survives office moves and team changes. The full system, including every routing mode, is in how 1300 numbers work in Australia, and the caller's own steps are in how to call a 1300 number.

If these are the calls your business needs to handle, search the available 1300 numbers pool and point one at your phone — the scenarios above are just configuration, and the product overview at 1300 numbers fills in the detail.