Q :? Is the work of VoIP with DSL Internet, or only with an Internet cable
Source: Razor512 on Flickr
A: Good question! With some caveats, Yes, you should probably be able to use VoIP over DSL. We often get questions about whether a specific connection to the Internet will work with the VoIP service. Unless there is something very unusual about your Internet connection, the only things that your Internet connection must have to support VoIP are:
1. sufficient speed
2. A connection Ethernet for ATA (more on ATAs)
First, the speed. Various providers have recommendations on the minimum Internet speed needed for VoIP service, and most providers offer speed testers on their sites that allow you to determine if your connection is fast enough. Most services agree that a connection with 256 Kbps upload and download will do very well with VoIP. In general, any Internet connection identified as "high speed" will work with VoIP, including DSL, cable, satellite and T1.
A note on DSL: If you have DSL Internet and is currently bundled with your phone service (and not as a "dry loop"), you may have trouble porting your number phone to VoIP. Make sure you'll be able to just cancel the phone portion of your service and keep your Internet connection before you commit to VoIP. If your DSL and phone service are delivered together, ask your phone company to decouple your service and give you a separate phone line and DSL dry loop before attempting to transfer your number.
Second, the Ethernet connection. You must have a wired Internet connection to use VoIP. If you have WiFi, you probably also a wired connection, as most people WiFi by connecting a wireless router to a wired internet. If you share WiFi or do not have access to your router for another reason, you probably will not be able to use VoIP.
Got more questions about the implementation of VoIP service? Check out our guide to VoIP equipment, read the FAQ, or take a look at some previous blog posts. You can also leave us a comment below.