Hello UKFemale
I guess I am confused! The Zoom website clearly defines the model X5V as:
Quote:X5v:- A single integrated product with: an ADSL modem, ATA (Analog Telephone Adapter) with TelePort™, router, firewall, and 4-port switching hub. The X5v uses the SIP protocol.
see
http://www.zoom.com/products/voiceover_ip_overview.htmlThe highlighted text is the important thing. Since this device contains an ADSL modem, you can't use it directly on a cable connection. They use totally different methods for carrying the broadband signals. So my real question is - how on earth are you using the Zoom device with your - presumably separate - cable modem? The only thing I can imagine is that you have the cable modem LAN port connected into one of the four switched Ethernet LAN ports on the Zoom device, and your computer connected to another. If that is the case, the Zoom device is just operating as a switch (what Zoom call a 'switching hub'). It still doesn't explain how you can make calls with the computer switched on, though!
If you want to be able to do what you did previously on ADSL, and make VoIP calls independently, I think you are going to have to buy an independent ATA (analog telephone adapter). Linksys make such devices. The problem with your Zoom is it has that ADSL modem built in and that makes it useless with a DOCSIS cable connection. When you had ADSL, it would have been a great solution - just one box instead of three (modem; router / switch and ATA). However, now you have changed to a cable connection, it is a bit of a dinosaur! I'm not sure, but I don't know of any devices that incorporate all three functions in a single box with a
cable modem instead of an ADSL one.
I know this doesn't exactly help you a great deal, but at least I guess you know what the situation is - and what you probably have to do to fix it! Best of luck.