You don't use a phone, so can you be sure that your line has the right no.? If not, these calls must be initiated from elsewhere.

Does the phone announce your correct no. when you dial 1470 17070?

Hi, I have checked the line and it is the correct number. Since I disconnected the DVR a few days ago I have not had any more charges of calls to the suspicious number.
Regards
John

Are you sure you haven't inherited an alarm system from the previous owner because that's where my money is that's causing these calls?

Unscrew the faceplate of your master BT socket and look for extension wires or for an additional phone wire running into the socket. If you are sure you don't have an extensions in the house cut them if you find them there. If you're unsure, post a pic of the internal wiring of this socket and someone here will guide you.

How can a DVR connected by ethernet make a phone call?

What seems to have happened is a sysadmin not telling the truth after your calls and they silently fixed it (oops)!, and the coincidence at the same time of turning the DVR off appeared to fix it.

It probably has a lot to do with this.

How exactly are the two linked in your opinion? As I have only just changed the master socket (to ensure all wiring is up to date), Please explain how you think they are linked????

In reply to a post by god4aday:

How exactly are the two linked in your opinion....

I don't know but the likelihood of the fault being caused by you messing with the BT plant is much, much higher than the impossibility of an ethernet only device making a PSTN call!

In reply to a post by Deadbeat:

In reply to a post by god4aday:

How exactly are the two linked in your opinion....

I don't know but the likelihood of the fault being caused by you messing with the BT plant is much, much higher than the impossibility of an ethernet only device making a PSTN call!

I don't wish to throw a spanner in the works but there are devices that ONLY have an Ethernet connection but have the ability to instigate a PSTN call. It could be a gate or door entry system or more usually a VoIP phone. Just saying.

The only way you are going to solve the issue imo, is to get someone from Zen [an engineer perhaps] to visit you and then let him/her test with and without the DVR connected.
But it is unlikely that video devices connected by Ethernet could be the cause.
A crossed line could, but Zen have already ruled that out.?

There is one possible reason though, the DVR might have developed an internal fault that is messing with other external wiring and somehow making calls from your line, if as you say the problem goes away when you disconnect the DVR then it is part of the mix somewhere.?

Edited by deleted (Thu 12-May-16 01:10:48)

Are you saying a device connected to an Ethernet socket can dial via the phone line the DSL is delivered over? If so, then I would say that isn't true. It may well do a VoIP connection via an external service but that would not rack up costs on the physical phone line the DSL is connected to.