Phone not working after a power cut (Your own broadband)
Guide reference: HG-0173
Quote this reference if you contact us about this guide.
Approx. 2 min read
Restore phone service after a power cut when you use your own broadband. A
Don't worry. With your own broadband, most phone problems are adapter cables, internet outages, or a router setting called SIP ALG.
Quick answer
After power returns, your adapter and router need mains power before calls work again.
More detail
After power returns, your adapter and router need mains power before calls work again.
Steps for your own broadband
Confirm electricity is back at the adapter and router.
Switch adapter power off 30 seconds, then on.
Wait at least three minutes.
Test a call. Use a charged mobile for 999 during any cut. See Emergency calls during a power cut
What success looks like
Your home broadband is online, adapter lights are ready, and you can make and receive calls on your home number.
Common mistakes
- Plugging the phone into a wall socket instead of Phone1 on the adapter.
- Expecting Simple Telecoms to fix your broadband when only the phone service is with us.
- Leaving SIP ALG switched on in the broadband router.
Things to know
- See Digital home phone with your own broadband for full setup.
- See Phone not working with your own broadband for adapter faults.
- We do not supply or support your broadband router.
Still not working?
If your phone still does not work after power is back and the box has restarted, report a fault online.