How 1800 Numbers Work in Australia

An 1800 number works like a 1300 number with one decisive difference: the caller pays nothing from an Australian fixed line, and the business absorbs the entire call cost. The number itself is virtual — a routing instruction attached to the phones you already use, not a physical line. Dial the ten digits, the network hands the call to the number's virtual exchange, and the exchange connects it wherever the business's rules point.

The journey of an 1800 call

1. The caller dials the number — 1800 plus six digits, no area code, from anywhere in Australia. From a fixed line the call registers no charge at all.
2. The network routes to the virtual exchange attached to the number instead of to a physical line.
3. The business's routing rules fire — a single destination by default, or time-based, location-based, overflow or IVR rules where configured.
4. A real phone rings. The answer point might be an office landline, a mobile or a call-centre line; the caller hears ordinary ringing either way.
5. The business pays the call. The whole call cost bills against the business's plan, calculated per second.

Because the number is not tied to a line or location, it survives office moves, carrier changes and team growth unchanged. Advertise it once; reroute it as often as your business needs.

Routing options on an 1800 number

The routing engine is the working part of the number:

• Single destination. Every call rings one number — the simplest setup.
• Time-based routing. Business-hours calls go to the office; after-hours calls switch to voicemail-to-email or an alternate number.
• Location-based routing. Callers from different regions reach the office or representative that serves them.
• Overflow routing. Calls dial through a list of answer points in order — office, then mobile, then a colleague — so a busy or unanswered phone never loses the caller.
• Round-robin routing. Calls distribute across a team so the load is shared.
• IVR / auto-attendant. A menu ("press 1 for support, press 2 for accounts") sorts callers by keypress before a phone rings.

These combine freely: a support line might run an IVR into an overflow list during the day, then divert everything to voicemail-to-email overnight.

The toll-free economics

On 1800, the business pays 100 per cent of the call cost; the caller's share is zero from a fixed line. That is the product's entire value proposition — every cost hesitation a caller might have about picking up the phone is removed. The trade-off is the bill: the same call costs the business more on 1800 than on 1300, where the caller contributes up to the local call rate. Plans run from $10 to $99 per month with cap inclusions that absorb the first slice of call time; 1800 number cost sets out the full cost structure and the pricing page lists current call rates.

Who chooses 1800 — and why

The format suits lines where a free call changes caller behaviour: customer support, sales and booking lines, recall and service notices. The practical benefits follow from the mechanics:

• No caller-side cost barrier from fixed lines, anywhere in Australia.
• One national contact point that moves with the business, not with its addresses.
• The full feature layer — IVR, voicemail-to-email, call recording and reporting — shared with the 1300 product, so switching formats later is a plan change rather than a rebuild.

Callers experience the number exactly as described in how to call an 1800 number: dial ten digits, wait a ring or two, talk as long as needed.

If that model fits your business, pick a number from the available 1800 numbers pool, point it at the phone you already answer, and let the routing rules do the sorting. 1800 numbers carries the full product detail.