No sound on fibre phone after power cut

[Jehu4419]

How do I get sound working again please. The phone rings but no sound in either direction. WhatsApp calls fine.

[nambuso-TT]

Thank you for reaching out. If you need any help, please don’t hesitate to get in touch with us. We’re here to assist you. Thank you for contacting TalkTalk.

Have a wonderful day.

Goodbye!👋

[Jehu4419]

It is now working but I have no idea why. Thanks everyone for helping.

[mandisa1-TT]

Thank you so much for the support @KeithFrench 🙂

[KeithFrench]

In that case, @Jehu4419 I would suggest you contact the Full Fibre Helpdesk on the number quoted earlier; perhaps the Grandstream is faulty.

[Jehu4419]

The phone light flashes on for 2 seconds then off for less than 1 seconds. The other two lights are on continuously. The ethernet light on the wall box flashes irregularly. Thanks for helping.

[KeithFrench]

Hi @Jehu4419 

I realise that this may be difficult to access, but is it fast or slow flashing?

1. Fast Flashing - Phone off hook or user busy
2. Slow flashing - Voicemail waiting

What is the state of the Internet light?

[Jehu4419]

I have tried rebooting everything without success. The phone light on the Grandstream is blinking. According to the instructions this is supposed to mean a call is in progress. 

[KeithFrench]

HI @Jehu4419 

Try rebooting the Grandstream DVA unit.

[mandisa1-TT]

You are most welcome and thank you for confirming.
@KeithFrench I would appreciate any advice on this:)

@Jehu4419 You can also contact full fibre team on 03451720074  - VOICE - Mon-Fri: 9am-7pm; Sat: 9am-6pm; Sun: closed

[Jehu4419]

It's VOIP with eero . Thanks for helping.

[mandisa1-TT]

Thank you so much for the support @ferguson 

Hi there @Jehu4419 please provide the information requested by @ferguson, so we can assist you further

[ferguson]

Can you clarify what you mean by "fibre" phone? Is it a VoIP service, so connected directly to a Hub, or via Grandstream adapter?