Australian provider Checked September 2026
Optus call diversion codes
To divert calls you don't answer on an Optus mobile, dial **61*, the number, **, the ring time in seconds, then #, for example **61*NUMBER**20#. Dial ##61# to turn it off.
- Ring time up to 30 seconds
- Prepaid diverts cost 10c a minute
- Also set in the My Optus app
- Home phone: *78 then the number
**61*0491570006**20#Dial it from the phone you want to forward, then wait for the confirmation.
- Turn off
All Optus call diversion codes
Replace NUMBER with the number you want calls to go to.
Mobile
| Divert calls | Turn on | Turn off |
|---|---|---|
| No answer | **61*NUMBER**20#
Off: ##61# | ##61# |
| Busy | **67*NUMBER#
Off: ##67# | ##67# |
| Unreachable | **62*NUMBER#
Off: ##62# | ##62# |
| All calls | **21*NUMBER#
Off: ##21# | ##21# |
- Ring time: change the 20 to anything from 10 to 30 seconds, in steps of 5.
- Cost: You are not charged for the incoming call before it diverts. On postpaid, the diverted part to local, national and mobile numbers is charged at your plan rates. On prepaid it costs 10c a minute.
- Include the area code when you divert to a landline number.
- If you set a diversion while overseas, enter the number in +61 form.
- Postpaid mobiles cannot divert to an international number.
Home phone
| Divert calls | Turn on | Turn off |
|---|---|---|
| All calls |
#78 | #78 |
- Cost: You are not charged for the incoming call. The diverted part is charged at the rates of your Fixed Line Phone plan.
- Optus publishes an all-calls diversion only for home phones, with no busy or no-answer option.
- Optus says eligible services can set diversions from the handset, so not every home phone service supports it.
- To turn it off, dial #78 and listen for two short beeps.
How to divert calls on Optus
- 1
Check when calls will divert
This code sends calls you do not answer to the destination number.
- 2
Dial the code
From your Optus mobile, dial **61*NUMBER**20#, replacing NUMBER with the number calls should go to.
- 3
Check the result
Follow any prompts on your phone. If the request is rejected, check the instructions for your service before trying again.
- 4
Test it
Ring your number from another phone without answering it. Check that the destination receives the call. To turn it off later, dial ##61#.
How to turn off call diversion on Optus
Dial the code that matches the divert you set up. Calls go back to ringing your phone as normal.
Mobile
- No answer
-
##61# - Busy
-
##67# - Unreachable
-
##62# - All calls
-
##21#
Home phone
- All calls
-
#78
What to know about call diversion on Optus
Setting the ring time
Optus puts the ring time inside the no-answer code: after the number, dial **, then the seconds, then #. Optus lists the options as 05, 10, 15, 20, 25 and 30, so write 5 seconds as 05. The busy, unreachable and all-calls codes have no ring time.
Using the My Optus app instead
You can also set diversions in the My Optus app: tap Services, your mobile service, Settings, then Voicemail and call diversions. Choose when to divert, tap Another number, enter it with the area code and tap OK.
Optus Business
Business mobiles for 1 to 5 employees are set up in the My Optus app under Settings and Setup call diversions; businesses with 6 to 300 employees send Optus a mobile diversion request form. An Office Phone needs Call Divert activated online first, which can take up to 48 hours, then uses *78 and #78 like a home phone. Directline and Multiline services use *91 (all calls), *92 (busy) and *93 (no answer) followed by the number and #.
Divert calls from your phone's settings
Your phone may also offer call forwarding in its settings, depending on your device and plan. The iPhone Call Forwarding switch sends every call on. Use a supported no-answer option if you want your phone to ring first.
iPhone
- Open Settings, then Apps, then Phone (on older iOS, Settings then Phone).
- Tap Call Forwarding and switch it on. If you use two SIMs, choose your business line first.
- Tap Forward To and enter the number calls should go to.
- Go back. A forwarding icon shows in the status bar while it is on.
Android
- Open the Phone app, tap the three-dot menu, then Settings.
- Tap Calls (or Supplementary services, depending on the phone), then Call forwarding.
- Choose When unanswered so your phone rings first and only missed calls move on.
- Enter the number, tap Turn on, and pick the right SIM if asked.
If the code doesn't work
"Connection problem or invalid MMI code"
The network did not accept the request. Check you have signal, turn off Wi-Fi calling and aeroplane mode, then dial the code again exactly as shown.
"Setting activation failed" or "unsuccessful"
The network refused the divert. Some plans block diverts to other numbers, and some networks want the number in international form. Check the notes on this page, or set it up in your phone settings instead.
Calls still go to voicemail
Voicemail is itself a divert, and only one can be active for each condition. Setting a new divert replaces the voicemail one. If calls still reach voicemail, cancel all diverts and set yours again.
Optus call diversion questions
How do I divert calls on my Optus mobile?
Dial ** then the code (61 for no answer, 67 for busy, 62 for no coverage or 21 for all calls), then * and the number, then # and press Call. For no answer, add ** and a ring time before the #, for example **61*0491570006**20# sends missed calls to 0491 570 006 after 20 seconds.
How do I turn off call forwarding on Optus?
Dial ## then the code and #, for example ##61# for no answer or ##21# for all calls. On an Optus home phone, dial #78 and listen for two short beeps.
Is call diversion free on Optus?
The incoming call is free, but you pay for the diverted part. Postpaid mobiles are charged at plan rates, prepaid mobiles pay 10c a minute, and home phones pay their Fixed Line Phone plan rates.
How do I change how long my Optus phone rings before it diverts?
Put the ring time in the no-answer code: **61*, the number, **, then 05, 10, 15, 20, 25 or 30, then #.
Can I divert my Optus mobile to an overseas number?
Not on postpaid. Optus prepaid can divert internationally, charged at the international call rate plus 10c a minute.
How do I divert my Optus home phone?
Listen for a dial tone, dial *78, enter the number with its area code and wait for two short beeps. Dial #78 to turn it off.
Sources
Checked in September 2026 against the official pages below. Networks change codes and prices, so if something here stops working, their page is the final word.
