Local number and VOIP

[#1]

When I upgraded to FTTP I ported my landline number to A&A for their VOIP service.

Yesterday while chatting to our next door neighbour she said she tried to phone us (on our landline) and got number not available or a similar fault.

She would have just dialled our number without the area code.

The simple question is: does Openreach add the area code or does the system treat any number without the area code as local?

[#2]

As you are no longer directly connected to your local exchange, anyone calling you will need to add the area code.

There are a few areas that everyone has to add the area code, Poole/Bournemouth as an example.

[#3]

@FlossyThePig 

REMOVED.

Edit:  @Mustrum types faster than me!

Edit2: And gave a better explanation!

[#4]

Thank you for the replies, which is what i thought.

I wonder what will happen after PSTN is switched off.

[#5]

Some (most?) voip devices can have the local std code preset, so dialling a number that doesnt start with 0 will automatically have the local std code prepended to the number.

My Gigaset N300IP certainly has the facility.

I suspect ISP supplied digital voice systems will possibly be setup this way.

[#6]

"There are a few areas that everyone has to add the area code, Poole/Bournemouth as an example."

Here in Milton Keynes, we have had to dial the full number on local calls for quite a few years now,

I think it is to do with some areas running out of telephone numbers, and doing this releases more of them?

I have noticed that since this change, there are quite a few local businesses advertising landline numbers beginning with a "9".