My netgear dg834 wired router ceased to get an ADSL connection for no apparent reason? The ADSL connection, filter and cabling all work (as I've tried with a modem). Hmmm?

The simplest way to add more ethernet ports is to use a network hub and connect it to the Netgear DG834 instead of the Netgear WNDR3700. This does not require any configuration.

The linksys may be assigning IP addresses that conflict with the router. Usually you need to disable Dynamic IP assignment in downstream routers and switches.

If BT tested the phone line is OK but did AOL test the connection to the Netgear router and get the IP address of your Netgear router.
The phone connection is OK but the ADSL connection from the telephone exchange may not be working, that is why you are not getting an ADSL light.

chack folowing link

you will get all your ansers

http://kb.netgear.com/app/answers/detail/a_id/120

The fact that it works ok with the dg834 v2 means you have a DSL enabled line and also connection to the internet
You also have all the configuration details within the V2 Router - you will need to know your ISP account password
Now on the V5 router - do a factory reset - theres a small hole at the back of the router 1. Press and hold the Default Reset button until the Test LED turns on (about 10 seconds). 2. Release the Default Reset button and wait for the router to reboot.

What is the color of the ADSL light? Try to power cycle the router.

Firmware Upgrade

1. Please verify the model and version of the router underneath it.
2. Go to ftp://downloads.netgear.com/files/dg834v2_dg834gv2_3_01_38_uk_only.zip to download the firmaware.
3. Save the file to the Desktop.

Note: Please perform firmware upgrade with wired or Ethernet connection only. Before you upgrade, write down all current settings as you need to enter them manually after upgrading.

4. Using the computer hardwired on the router, open any web browser like Internet Explorer or Netscape Navigator.
5. Connect to the router by typing http://routerlogin.com/basicsetting.htm or http://192.168.0.1 in the address field and click Enter or Return key.
6. A window will prompt for a user name and password. The default username is "admin" and the default password is "password".

Note: If it does not take password as the password, you might have changed it when you have run the NETGEAR Setup CD so please try other passwords. If you cannot remember the password, you need to reset the router and run the Setup CD to reconfigure it.

7. Click on Maintenance and then Router Upgrade.
8. Click Browse and locate the upgrade file in your Desktop. Click Upload.
9. Please wait for the router to reboot.
10. Reset the router.

a. Please push the reset button at the back of the router and release after 30 seconds.
b. Unplug the power adapter for 10 seconds and then please plug it back in.

Yes, just connect them via an ethernet network cable

You need to configure first that RP614 to work with your network.

No, you can't connect your router directly to your ADSL. Maybe you should try a wired router.